家庭の大気汚染と健康: 多国間の LPG 介入試験 (HAPIN)
2026年5月7日 更新者：Thomas Clasen、Emory University
この研究は、4 か国 (インド、グアテマラ、ペルー、ルワンダ) の 3,200 世帯における液化石油ガス (LPG) ストーブと燃料配布の無作為化比較試験です。
共通のプロトコルに従って、各介入サイトは 800 人の妊婦 (18 ～ 34 歳、妊娠 9 ～ 20 週未満) を募集し、LPG ストーブと 18 か月分の LPG を受け取るように世帯の半分を無作為に割り当てます。
対照世帯は、主に固体バイオマス燃料を使用して調理を続けることが予想され、形成的研究に基づいて各サイトに合わせてカスタマイズされた、試験全体の一貫した一連の原則に基づいて報酬を受け取ります。
子供が1歳になるまで、母親は子供と一緒に追跡されます。
研究者は、世帯の 15% に 2 人目の妊娠していない年配の女性 (40 歳から 80 歳未満) がいると推定しています。
介入の使用を最適化するために、研究者は 1 年目に以前の経験と形成的研究に基づいた行動変容戦略を実施します。
この研究では、調理用コンロの使用を評価し、家庭の空気汚染の個人暴露評価を繰り返し実施し、バイオマーカー分析と生物標本保存のために乾燥血液スポットと尿サンプルを収集します。
主な結果は、低出生体重、重度の肺炎の発生率、および子供の発育阻害、および年配の成人女性の血圧です。
副次的転帰には、子供の早産と発育、妊娠中の母体の血圧、内皮機能、呼吸障害、アテローム性動脈硬化症、発がん性代謝産物、高齢女性の生活の質が含まれます。
調査の概要
詳細な説明
世界では、約 30 億人が調理や暖房のために固形燃料に依存しており、その大多数が低中所得国 (LMIC) に住んでいます。 結果として生じる家庭の大気汚染 (HAP) は、2010 年の世界的な疾病負担の 3 番目の主要なリスク要因であり、主に女性と幼い子供の間で、年間推定 430 万人が死亡しています。 以前の介入により、よりクリーンなバイオマスベースの調理用コンロが提供されましたが、有意義な健康改善をもたらすレベルへの曝露を減らすことはできませんでした. 液化石油ガス (LPG) 調理用コンロを使用した大規模なフィールド トライアルは行われておらず、最もクリーンでスケーラブルな介入となる可能性があります。
この研究の目的は、4 つの LMICs (インド、グアテマラ、ペルー、ルワンダ) の 3,200 世帯で LPG ストーブと燃料配布のランダム化比較試験を実施し、生涯にわたる潜在的な健康上の利点に関する厳密な証拠を提供することです。 各介入サイトは、800 人の妊婦 (年齢 18 ～ 34 歳、妊娠 9 ～ 20 週未満) を募集し、世帯の半分を無作為に割り当てて、LPG ストーブと 18 か月分の LPG を受け取ります。 対照世帯は、主に固体バイオマス燃料を使用して調理を続けることが予想され、形成的研究に基づいて各サイトに合わせてカスタマイズされた、試験全体の一貫した一連の原則に基づいて報酬を受け取ります。 子供が1歳になるまで、母親は子供と一緒に追跡されます。 2 人目の妊娠していない年配の女性 (40 歳から 80 歳未満) がいる世帯では、研究者は 18 か月の追跡調査期間中、心肺、代謝、がんの転帰を評価するために、彼女を登録して追跡します。 介入の使用を最適化するために、研究者は行動変容戦略を実施します。 この研究では、調理用コンロの使用を評価し、HAP (PM2.5、黒色炭素、一酸化炭素) への個人暴露評価を繰り返し実施し、複数の時点ですべての参加者のバイオマーカー分析と生体試料の保管のために乾燥血液スポットと尿サンプルを収集します。 主な結果は、低出生体重、重度の肺炎の発生率、および子供の発育阻害、および年配の成人女性の血圧です。 副次的転帰には、子供の早産と発育、妊娠中の母体の血圧、内皮機能、呼吸障害、アテローム性動脈硬化症、発がん性代謝産物、高齢女性の生活の質が含まれます。
この研究では、次の特定の目的に対処します。(1) インテント・トゥ・トリート分析を使用して、共通のプロトコルを使用して、4 つの多様な LMIC 集団の健康に対する無作為化された LPG ストーブと燃料介入の影響を判断します。 (2) HAP と健康転帰の暴露反応関係を決定する。 （3）LPG介入と、曝露/健康影響の標的および探索的バイオマーカーの両方との関係を決定します。
この研究は、脆弱な人々の間でLPGストーブを拡大するための国家的および世界的な政策を知らせるために、コストと実施戦略を含む証拠を提供します。 最終的には、これにより、より深い政策レベルの議論が促進されるだけでなく、HAP 介入を世界的に開始および維持するための要件が特定されます。
研究の種類
介入
入学 (実際)
3640
段階
- 適用できない
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究場所
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Tamil Nadu
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Chennai、Tamil Nadu、インド、600116
- Sri Ramachandra Institute of Higher Education and Research
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Departamento de Guatemala
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Guatemala City、Departamento de Guatemala、グアテマラ、01015
- Universidad del Valle de Guatemala
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Puno、ペルー
- Puno Global Non-Communicable Disease Research Site, School of Medicine, Johns Hopkins University
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Kigali、ルワンダ
- Rwanda Research Site, London School of Hygiene and Tropical Medicine, University of Liverpool
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参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
18年～79年 (大人、高齢者)
健康ボランティアの受け入れ
いいえ
説明
妊娠中の女性の包含基準:
- 妊娠の確認（hCG陽性の血液または尿検査）
- 18歳から35歳未満（自己申告による）
- バイオマスストーブを主に使用
- 研究地域に住んでいる
- 超音波検査で妊娠9～20週未満
- 単胎妊娠（胎児1人）
- 超音波検査時に正常な胎児心拍数 (毎分 120 ～ 180 ビート) の生存可能な胎児
- 自己申告で確認された無作為化時の妊娠継続
- -インフォームドコンセントに参加することに同意する
妊婦の除外基準:
- 現在、たばこまたはその他のたばこ製品を吸っている
- 今後 12 か月以内に調査地域外に恒久的に移動する予定がある
- LPG ストーブを主に使用しているか、近い将来 LPG を主に使用する可能性が高い
同じ世帯の高齢の成人女性の包含基準:
- 40歳から80歳未満（自己申告による）
同じ世帯の高齢の成人女性の除外基準:
- 現在、たばこまたはその他のたばこ製品を吸っている
- 妊娠中（自己申告による）
- 今後 12 か月以内に現在の世帯から引っ越す予定
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：防止
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的：液化石油ガスコンロ
実験群に無作為に割り付けられた参加者は、液化石油ガス (LPG) 調理用コンロと 18 か月分の LPG を受け取ります。
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The intervention consists of a high-quality locally available liquefied petroleum gas (LPG) stove having at least two burners, a continuous supply of LPG fuel for 18 months, and the promotion of stove use on an exclusive basis for cooking.
The intervention will be provided free of charge to all intervention households upon enrollment.
On a weekly basis, study staff will examine stove condition, perform any necessary repairs, and measure and record weight of LPG tanks in order to anticipate need for refills.
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介入なし：コントロール
対照群の参加者は、液化石油ガス (LPG) ストーブを受け取らず、従来の調理方法 (直火または従来のストーブ)、または選択した調理方法を引き続き使用します。
対照世帯は、形成的研究に基づいて各サイトに合わせてカスタマイズされた、試験全体の原則の統一セットに基づいて報酬を受け取ります。
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Birth weight
時間枠：Within 24 hours of birth (up to 5 months post-randomization of mother)
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Birth weight is assessed by a trained nurse or health worker within 24 hours of birth.
Infants are weighed naked or in a pre-weighed blanket.
Weight is measured to the nearest 10 g using a digital electronic scale, if performed by the study field staff; otherwise, hospital medical records are used.
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Within 24 hours of birth (up to 5 months post-randomization of mother)
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Incidence of HAPIN Defined Severe Pneumonia
時間枠：Up to 12 months after birth
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The number of times a child has severe pneumonia over their period of follow-up during the first year of life is assessed.
For this study pneumonia criteria are adapted from the WHO classification of childhood pneumonia (2014) and there are 3 algorithms for case criteria: 1) the presence of cough and/or difficult breathing and at least 1 general danger sign plus evidence of pneumonia on lung imaging (i.e., lung ultrasound or chest x-ray), or 2) the presence of cough and/or difficult breathing and hypoxemia (measured either via pulse oximetry (SpO2), or observing a child requiring advanced respiratory support (i.e., intubation and mechanical ventilation, non-invasive ventilation with continuous or bi-level positive airway pressure support, or high-flow nasal cannula oxygen), or 3) children who die prior to evaluation but their death is attributed to pneumonia by verbal autopsy.
Cases of pneumonia are recorded children present to HAPIN health facilities with respiratory symptoms.
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Up to 12 months after birth
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Length-for-age z-score 2 standard deviations below the standard
時間枠：12 months after birth
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The primary outcome measured is stunting at one year of age, defined as a length-for-age z-score (LAZ) that is 2 standard deviations below the median of the growth standard.
Infant length is assessed at birth and quarterly thereafter, until the child is 12 months old.
Z-scores are calculated using the 2006 World Health Organization (WHO) Multi-Growth Reference Standard (MGRS).
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12 months after birth
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Systolic Blood Pressure Among Older Adult Women
時間枠：Baseline, 3, 6, 9, 12, and 18 months post-randomization
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Systolic blood pressure is assessed in the older adult women in the intervention and control arms using automatic sphygmomanometers (Omron HEM-907XL; Osaka, Japan).
The study team uses the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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Baseline, 3, 6, 9, 12, and 18 months post-randomization
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Child Linear Growth During Extended Follow-up
時間枠：24, 36, 48 and 60 months of age
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Linear growth of children is assessed in centimeters of height.
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24, 36, 48 and 60 months of age
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Caregiver Reported Early Childhood Development Instrument (CREDI) Score During Extended Follow-up
時間枠：24 months of age
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Child development is assessed with the Caregiver Reported Early Childhood Development Instrument (CREDI).
The CREDI is a population-level measure of early childhood development (ECD) for children from 0-3 years of age.
The CREDI assesses 4 domains of child development: 1) motor (fine and gross motor), 2) language (expressive and receptive language), 3) cognitive (executive function, problem solving and reasoning, and pre-academic knowledge), and 4) social-emotional (emotional and behavioral self-regulation, emotional knowledge, and social competence).
The CREDI long form consists of up to 108 items and the number of questions answered depends on the age of the child.
Responses of "yes" are coded as 1 and "no" is coded as 0; certain items are reverse coded.
Both domain-specific and overall z-scores are calculated.
Total raw scores increase by age (with developmental progression), and higher scores indicate increased development.
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24 months of age
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Malawi Developmental Assessment Tool (MDAT) Score
時間枠：36, 48 and 60 months of age
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The MDAT measures gross motor (39 items), fine motor (42 items), language/cognition (40 items) and social skills (36 items).
Originally developed and validated in rural Malawi, it has now been used in over 25 countries with more than 8,000 children as both a clinical and research tool.
The MDAT is a continuous test with start and stop rules.
Most items are administered directly to the child and items that are not easily observed (e.g., child speaks in full sentences; child understands sharing with others; child can dress self) are administered by parent report.
Children receive either a pass or fail for each item, and summed pass scores can produce a composite score as well as domain-specific scores.
Total scores range from 0 to 157 where higher scores indicate greater neurodevelopment.
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36, 48 and 60 months of age
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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早産
時間枠：最長 5 か月 (生後 24 時間以内、無作為化後 3 ～ 5 か月)
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早産とは、妊娠 37 週に満たない生存児の出産と定義されています。
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最長 5 か月 (生後 24 時間以内、無作為化後 3 ～ 5 か月)
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呼吸器疾患による入院
時間枠：生後12ヶ月まで
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生後1年間の呼吸器疾患による入院の累積発生率。
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生後12ヶ月まで
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WHO 非重症肺炎
時間枠：生後12ヶ月まで
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生後 1 年間の WHO 非重症肺炎の累積発生率 (2014 年の定義および 2013 年の定義)。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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重度の肺炎
時間枠：生後12ヶ月まで
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生後 1 年間の WHO 非重症肺炎の累積発生率 (2014 年の定義および 2013 年の定義)。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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WHOポケットブック 非重症肺炎
時間枠：生後12ヶ月まで
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「子供のための病院ケアのポケットブック」（2013）の第2版で定義されている、生後1年間のWHO非重症肺炎の累積発生率。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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WHOポケットブック 重度の肺炎
時間枠：生後12ヶ月まで
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「Pocket book of Hospital care for children」(2013) の第 2 版で定義されている、生後 1 年間の WHO 重症肺炎の累積発生率。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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低酸素性肺炎
時間枠：生後12ヶ月まで
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生後1年間の低酸素性肺炎の累積発生率。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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超音波またはX線写真 肺炎
時間枠：生後12ヶ月まで
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生後1年間の肺超音波または胸部X線肺炎の累積発生率。
小児が呼吸器症状で HAPIN 医療施設を訪れるたびに、肺炎の症例が記録されます。
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生後12ヶ月まで
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Gestational Systolic Blood Pressure
時間枠：Baseline (9-20 weeks gestation), 24-28 and 32-36 weeks gestation
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Blood pressure is assessed in the pregnant women in the intervention and control arms using automatic sphygmomanometers (OMRON HEM-907XL; Osaka, Japan).
The study team will use the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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Baseline (9-20 weeks gestation), 24-28 and 32-36 weeks gestation
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Gestational Diastolic Blood Pressure
時間枠：Baseline (9-20 weeks gestation), 24-28 and 32-36 weeks gestation
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Blood pressure is assessed in the pregnant women in the intervention and control arms using automatic sphygmomanometers (OMRON HEM-907XL; Osaka, Japan).
The study team will use the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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Baseline (9-20 weeks gestation), 24-28 and 32-36 weeks gestation
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Systolic Blood Pressure in New Mothers
時間枠：9, 12, and 18 months post-randomization
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Blood pressure is assessed in the new mothers in the intervention and control arms using automatic sphygmomanometers (OMRON HEM-907XL; Osaka, Japan).
The study team will use the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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9, 12, and 18 months post-randomization
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Diastolic Blood Pressure in New Mothers
時間枠：9, 12, and 18 months post-randomization
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Blood pressure is assessed in the new mothers in the intervention and control arms using automatic sphygmomanometers (OMRON HEM-907XL; Osaka, Japan).
The study team will use the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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9, 12, and 18 months post-randomization
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Diastolic Blood Pressure Among Older Adult Women
時間枠：Baseline, 3, 6, 12 and 18 months post-randomization
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Diastolic blood pressure is assessed in the older adult women in the intervention and control arms using automatic sphygmomanometers (Omron HEM-907XL; Osaka, Japan).
The study team uses the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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Baseline, 3, 6, 12 and 18 months post-randomization
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Mean arterial pressure
時間枠：Baseline, 3, 6, 12 and 18 months post-randomization
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Mean arterial pressure is assessed in the older adult women in the intervention and control arms using automatic sphygmomanometers (Omron HEM-907XL; Osaka, Japan).
Mean arterial pressure is calculated as DBP+(SBP-DBP)/3, where SBP=systolic blood pressure and DBP=diastolic blood pressure.
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Baseline, 3, 6, 12 and 18 months post-randomization
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Pulse pressure
時間枠：Baseline, 3, 6, 12 and 18 months post-randomization
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Pulse pressure is assessed in the older adult women in the intervention and control arms using automatic sphygmomanometers (Omron HEM-907XL; Osaka, Japan).
pressure.
Pulse pressure is the difference between systolic blood pressure and diastolic blood pressure.
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Baseline, 3, 6, 12 and 18 months post-randomization
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Fetal Growth
時間枠：Baseline, Gestation Week 24-28 and Gestation Week 32-36
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Pregnant women have ultrasounds at Baseline and during gestation weeks 24-28 and gestation weeks 32-36 to measure fetal growth outcomes.
Specifically, the researchers evaluate head circumference (HC), abdominal circumference (AC), femur length (FL) and estimated fetal weight (EFW) during gestation.
The researchers are comparing (i) z-scores of individual fetal growth measurements (HC, AC, FL, EFW) at the 2 growth ultrasound visits between intervention and control participants (separately at 24-28 weeks gestation and 32-36 weeks gestation); (ii) differences in proportions of the 2.5th percentiles of each of these measurements evaluated separately at 24-28 and 32-36 weeks gestation; (iii) Z-score trajectories of HC, AC, FL and EFW as a function of gestational age and intervention; and (iv) prevalence of small for gestational age (SGA) during the fetal period through birth as measured by WHO INTERGROWTH 21st standards.
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Baseline, Gestation Week 24-28 and Gestation Week 32-36
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Gestational age at birth
時間枠：Up to 5 months (within 24 hours of birth, 3-5 months post randomization)
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Gestational age at birth is measured in weeks, as continuous outcome, among all live births.
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Up to 5 months (within 24 hours of birth, 3-5 months post randomization)
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Brachial artery reactivity testing (BART)
時間枠：Baseline, 18 months post-randomization
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Brachial artery reactivity testing (BART) measures endothelial function via flow-mediated dilatation to reactive hyperemia following the release of arm blood-flow occlusion.
In this test, baseline artery diameter is measured, then a blood pressure cuff is inflated to induce distal arm ischemia for 5 minutes and after releasing the pressure, the post-occlusion brachial artery diameter is measured.
The ratio of post- to pre-occlusion artery diameter represents endothelial function where lower values indicate worse endothelial function.
(Peru only)
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Baseline, 18 months post-randomization
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Carotid intima-media thickness (CIMT) Among Older Adult Women
時間枠：Baseline, 18 months post-randomization
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The carotid intima-media thickness test (CIMT) is used to determine the extent of carotid atherosclerotic vascular disease.
The test measures the thickness of the inner two layers of the carotid artery and can detect plaque build up prior to physical symptoms being experienced.
The carotid ultrasound will be performed with a portable ultrasound by trained sonographers.
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Baseline, 18 months post-randomization
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St. George Respiratory Questionnaire (SGRQ) Score
時間枠：Baseline, 18 months post-randomization
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Adult respiratory health and well-being is assessed with the St. George Respiratory Questionnaire (SGRQ).
The SGRQ measures impaired health and perceived well-being among individuals with chronic airway disease.
The SGRQ has sections assessing symptoms, activities that cause breathlessness or are limited because of breathlessness, and the impacts of respiratory problems on employment, sense of control of health, panic, stigmatization, medication use, side effects of therapies, expectations for health and disturbances of daily life.
The questionnaire includes multiple choice, true/false and open-ended questions.
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Baseline, 18 months post-randomization
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Short Form 36 Survey (SF-36) Score Among Older Adult Women
時間枠：Baseline, 18 months post-randomization
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The Short Form 36 survey (SF-36) is a standardized, preference-based 36 item questionnaire evaluating quality of life.
The survey has 8 sections (vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, social role functioning, and mental health).
Possible scores range from 0 (lowest quality of life) to 100 (highest quality of life).
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Baseline, 18 months post-randomization
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Weight
時間枠：24, 36, 48 and 60 months of age of the child
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Weight is measured in kilograms (kg).
Weight in new mothers in Rwanda is measured when the child is 24 months old.
For new mothers in Guatemala weight is measured when the child is 24 and 36 months old.
In older adult women, weight is measured when the child is 24 months old.
Weight is measured in children at 24, 36, 48 and 60 months of age.
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24, 36, 48 and 60 months of age of the child
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Body Mass Index (BMI)
時間枠：24, 36, 48 and 60 months of age of the child
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BMI is calculated as weight in kilograms divided by height in meters (m) squared (kg/m^2).
BMI in new mothers in Rwanda is calculated from height and weight measurements obtained when the child is 24 months old.
For new mothers in Guatemala BMI is calculated from height and weight measurements obtained when the child is 24 and 36 months old.
In older adult women, BMI is calculated from height and weight measurements obtained when the child is 24 months old.
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24, 36, 48 and 60 months of age of the child
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Height
時間枠：24 and 36 months of age of the child
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Height is measured in meters.
Height in new mothers in Rwanda is measured when the child is 24 months old.
For new mothers in Guatemala height is measured when the child is 24 and 36 months old.
In older adult women, height is measured when the child is 24-months old.
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24 and 36 months of age of the child
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Child Blood Pressure
時間枠：24 (Rwanda only) and 60 months of age
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Blood pressure is assessed in the children using automatic sphygmomanometers (OMRON HEM-907XL; Osaka, Japan).
The study team uses the procedures adapted from previously validated methods and cardiovascular outcome studies, following recommendations for the American Heart Association and the European Society of Hypertension.
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24 (Rwanda only) and 60 months of age
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Child Linear Growth
時間枠：Birth (3-5 months post-randomization), and 3, 6, 9, and 12 months of age
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Linear growth of children is assessed in centimeters at birth and quarterly thereafter, until the child is 12 months old.
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Birth (3-5 months post-randomization), and 3, 6, 9, and 12 months of age
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Caregiver Reported Early Childhood Development Instrument (CREDI) Score
時間枠：3 and 12 months of age
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Child development is assessed with the Caregiver Reported Early Childhood Development Instrument (CREDI).
The CREDI is a population-level measure of early childhood development (ECD) for children from 0-3 years of age.
The CREDI assesses 4 domains of child development: 1) motor (fine and gross motor), 2) language (expressive and receptive language), 3) cognitive (executive function, problem solving and reasoning, and pre-academic knowledge), and 4) social-emotional (emotional and behavioral self-regulation, emotional knowledge, and social competence).
The CREDI long form consists of up to 108 items and the number of questions answered depends on the age of the child.
Responses of "yes" are coded as 1 and "no" is coded as 0; certain items are reverse coded.
Both domain-specific and overall z-scores are calculated.
Total raw scores increase by age (with developmental progression), and higher scores indicate increased development.
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3 and 12 months of age
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その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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自然流産
時間枠：妊娠20週までのベースライン
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19週6日前の胎児死亡。
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妊娠20週までのベースライン
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早期早産
時間枠：誕生
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すべての出生のうち、34 週未満での出生は妊娠を完了しました。
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誕生
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死産
時間枠：出産まで
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妊娠 20 週以降に発生した胎児死亡、または重篤な有害事象フォーム、妊婦病歴フォーム、口頭剖検フォームに記載されている。
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出産まで
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新生児死亡
時間枠：生後28日まで
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生後28日までの死亡。
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生後28日まで
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小児の肺機能
時間枠：生後36、48、60ヶ月
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肺機能測定は、使い捨てマウスピースを備えた Tremoflo C-100 装置を使用した強制振動法 (FOT) を使用して行われます。
FOT は、気道の変化を早期に特定できる技術です。
FOT デバイスは、外部から加えられた圧力波と、その結果として生じる空気の流れとの関係を測定して、呼吸インピーダンスを測定します。
高周波数で生成される値は近位の大きな気道に対応し、低周波数で生成される値は遠位の小さな気道に対応します。
この測定はグアテマラの子供たちを対象に実施されます。
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生後36、48、60ヶ月
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尿中バイオマーカーの変化
時間枠：ベースライン、無作為化後 3、6、9、12、18 か月、および子供の生後 24 か月
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多重暴露バイオマーカーが測定されます: 3-OH コチニン、4-(メチルニトロサミノ)-1-(3-ピリジル)-1-ブタノール (NNAL)、レボグルコサン、8OH-デオキシグアノシン (8OHdG)、および揮発性有機化学物質 (VOC) 代謝物。
曝露バイオマーカー (特に尿が制限されている可能性のある小児) は、多環芳香族炭化水素 (PAH) バイオマーカー、レボグルコサン、揮発性有機化学物質 (VOC) バイオマーカー、重金属、およびタバコ関連バイオマーカーのように優先順位が付けられます。
尿中バイオマーカーは、ベースライン時、妊娠 24 ～ 28 週、および妊娠 32 ～ 36 週の妊婦、および子供が生後 24 か月の新米母親で測定されます。
バイオマーカーは、ベースライン、無作為化後 3、6、9、12、18 か月後に高齢成人女性を対象に測定されます。
バイオマーカーは、生後 3、6、12、24 か月の小児で測定されます。
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ベースライン、無作為化後 3、6、9、12、18 か月、および子供の生後 24 か月
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乾燥血斑 (DBS) バイオマーカーの変化
時間枠：ベースライン、無作為化後 3、6、9、12、18 か月後、および子供の生後 24 か月時点
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乾燥血液スポットから測定される主なバイオマーカーは、炎症マーカー、心血管疾患の内皮マーカー、酸化ストレスマーカー、Hb、HbA1C、腫瘍関連抗原抗体、シトクロム P450、p53 腫瘍関連抗原 (TAA)、脂質、メタボロミクス、MiRNA、重金属。
DBS バイオマーカーは、ベースライン、在胎 24 ～ 28 週、在胎 32 ～ 36 週の妊婦、および子供が生後 24 か月の新米母親で測定されます。
DBS バイオマーカーは、ベースライン、無作為化後 3、6、9、12、18 か月後に高齢成人女性を対象に測定されます。
DBS バイオマーカーは、生後 3、6、12、および 24 か月の小児で測定されます。
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ベースライン、無作為化後 3、6、9、12、18 か月後、および子供の生後 24 か月時点
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母親の知覚ストレス尺度 (PSS)
時間枠：ランダム化後 9 ～ 18 か月 (子供の生後 3 ～ 12 か月)
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10 項目のコーエンの知覚ストレス スケール (PPS) は、個人が自分の人生の出来事をストレスであるとどのように評価するかを評価します (例: 「先月、克服できないほど困難が山積していると感じたことが何度ありましたか?」 ) (コーエン、1983)。
リッカートレベルの反応は 0 (まったくない) から 4 (非常に頻繁にある) までの範囲であり、PPS スコアが高いと、知覚されるストレスのレベルも高くなります。
スペイン語の PPS が作成およびテストされ、有効で信頼できることが判明しました (Vallijo et al., 2018)。
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ランダム化後 9 ～ 18 か月 (子供の生後 3 ～ 12 か月)
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早産
時間枠：誕生
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早産や死産も含みます。
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誕生
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家庭の食糧不安
時間枠：ベースライン、ランダム化後 18 か月
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家庭の食糧不安は、食糧農業機関 (FAO) によって開発および検証された食糧不安経験尺度 (FIES) を使用して測定されます。
FIES モジュールには、世帯による適切な食料へのアクセスに関する 8 つの質問が含まれており、それぞれに「はい」/「いいえ」の回答オプションがあり、不確実性/不安、食料量、食料の質という食料不安の 3 つの領域を測定することを目的としています。
各質問は 0/1 の値をとり、それらを合計すると 0 ～ 8 の合計スコアが得られます。
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ベースライン、ランダム化後 18 か月
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食の多様性 - 女性
時間枠：ベースラインからランダム化後 18 か月まで
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女性の食事の多様性は、FAO と FHI 360 の Minimum Dietary Diversity - Women (MDD-W) アンケートを使用して測定されます。このアンケートは、オープンリコール形式を使用して、前日と夜間に回答者が消費した食品と飲料に関するデータを収集します。 。
回答は 10 の食品グループに分類され、10 の食品グループのうち 5 つ以上を摂取していると報告した女性は、最低限の食事の多様性を達成していると分類されます。
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ベースラインからランダム化後 18 か月まで
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ヘモグロビン (Hb) 濃度 / 貧血 - 女性
時間枠：ベースライン、ランダム化後 3 か月および 5 か月
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Hb は、HemoCue® Hb 201system (HemoCue® AB) ポイントオブケア デバイスを使用して、指を刺して採取した 1 滴の毛細管血から測定されます。
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ベースライン、ランダム化後 3 か月および 5 か月
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ヘモグロビン (Hb) 濃度 / 貧血 - 乳児
時間枠：ランダム化後 12 か月および 18 か月 (生後 6 か月および 12 か月)
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Hb は、HemoCue® Hb 201system (HemoCue® AB) ポイントオブケア デバイスを使用して、指を刺して採取した 1 滴の毛細管血から測定されます。
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ランダム化後 12 か月および 18 か月 (生後 6 か月および 12 か月)
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Change in fine particulate matter (PM2.5) exposure
時間枠：Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
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Personal monitoring equipment is used to assess exposure to fine particulate matter (PM2.5) over a 24-hour period in intervention and control participants (pregnant women, older adult women, and children).
Exposure for pregnant women is measured at baseline, 24-28 weeks gestation, 32-36 weeks gestation, and in Guatemala and India, when the child is 24 months old.
Exposure for the child is measured at 3, 6, 12, 24, 36, 48 and 60 months of age.
Exposure for the older adult women is measured at baseline, 3, 6, 12 and 18 months post-randomization, and in Guatemala and India, when the child is 24 months old.
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Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
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Change in Carbon monoxide (CO) exposure
時間枠：Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
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Personal monitoring equipment is used to assess exposure to carbon monoxide (CO) over a 24-hour period in intervention and control participants (pregnant women, older adult women, and children).
Exposure for pregnant women is measured at baseline, 24-28 weeks gestation, 32-36 weeks gestation, and in Guatemala and India, when the child is 24 months old.
Exposure for the child is measured at 3, 6, 12, 24, 36, 48 and 60 months of age.
Exposure for the older adult women is measured at baseline, 3, 6, 12 and 18 months post-randomization, and in Guatemala and India, when the child is 24 months old.
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Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
|
|
Change in Black carbon (BC) exposure
時間枠：Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
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Personal monitoring equipment is used to assess exposure to black carbon (BC) over a 24-hour period in intervention and control participants (pregnant women, older adult women, and children).
Exposure for pregnant women is measured at baseline, 24-28 weeks gestation, 32-36 weeks gestation, and in Guatemala and India, when the child is 24 months old.
Exposure for the child is measured at 3, 6, 12, 24, 36, 48 and 60 months of age.
Exposure for the older adult women is measured at baseline, 3, 6, 12 and 18 months post-randomization, and in Guatemala and India, when the child is 24 months old.
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Baseline, 3, 6, 9, 12 and 18 months post-randomization, and at 24, 36, 48, 60 months of age of the child
|
|
Messenger Ribonucleic Acid (mRNA) Expression and microRNA in Older Adult Women
時間枠：Baseline, 18 months post-randomization
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Two buccal cell scrapes will be collected by gently scraping the buccal mucosa on both sides of the mouth with a small plastic collection spoon.
Nasal turbinate brush samples can be collected using a soft cytobrush on each turbinate.
Collection is gentle and causes no discomfort to study participants.
Both samples will be processed in the laboratory according to procedures detailed in the protocol.
This will occur in the older adult women in an NCI substudy.
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Baseline, 18 months post-randomization
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Microbiome Operational Taxonomic Units (OTUs) in Older Adult Women
時間枠：Baseline, 18 months post-randomization
|
For the oral rinse, participants will vigorously rinse their mouth and the rinsates are collected in a centrifuge tube.
The tube is centrifuged and the pellet and supernatant are removed to separate cryovials, labeled and frozen.
This will occur in the older adult women in an NCI substudy.
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Baseline, 18 months post-randomization
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Epigenetics (DNA methylation) in Older Adult Women
時間枠：Baseline, 18 months post-randomization
|
Two buccal cell scrapes will be collected by gently scraping the buccal mucosa on both sides of the mouth with a small plastic collection spoon.
A 5-mL venous blood sample will be collected in an ethylenediaminetetraacetic acid (EDTA) vacutainer tube by standard clinical venipuncture of a cubital vein.
Both samples will be transported and processed in the laboratory according to procedures detailed in the protocol.
This will occur in the older adult women in an NCI substudy.
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Baseline, 18 months post-randomization
|
|
Metabolomics and MicroRNA in Older Adult Women
時間枠：Baseline, 18 months post-randomization
|
A 5-mL venous blood sample will be collected in an EDTA vacutainer tube by standard clinical venipuncture of a cubital vein.
The sample will be transported and processed in the laboratory according to procedures detailed in the protocol.
This will occur in the older adult women in an NCI substudy.
|
Baseline, 18 months post-randomization
|
|
Dietary diversity - infants
時間枠：9, 12, 15 and 18 months post-randomization (3, 6, 9, and 12 months of age)
|
Minimum dietary diversity for children will be measured using the World Health Organization (WHO) infant and young child feeding questionnaire.
The questionnaire uses a combination of open and closed recall and asks caregivers to report on foods and beverages consumed by the infant or young child during the previous day and night.
Responses will be categorized into eight food groups and infants who consumed five or more out of ten eight food groups will be categorized as achieving minimum dietary diversity.
|
9, 12, 15 and 18 months post-randomization (3, 6, 9, and 12 months of age)
|
|
Carotid intima-media thickness (CIMT) Among Older Adult Women During Extended Follow-up
時間枠：24 months of age of the child
|
The carotid intima-media thickness test (CIMT) is used to determine the extent of carotid atherosclerotic vascular disease.
The test measures the thickness of the inner two layers of the carotid artery and can detect plaque build up prior to physical symptoms being experienced.
The carotid ultrasound will be performed with a portable ultrasound by trained sonographers.
This outcome is only assessed in Guatemala during the extended follow-up period (after the birth of the household child).
|
24 months of age of the child
|
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Reported Diarrhea in Children
時間枠：Up to 12 months after birth
|
Reported diarrhea will be extracted from the Monthly Child Health Status Visit case report form.
Each month, the child's caretaker will be administered a survey to obtain information on whether the child under 1 year of age (the HAPIN study index child) or any other child in the home under 5 has experienced WHO-defined diarrhea (defined as three or more loose stools that can take the shape of a container within a 24-hour period) in the past 7 days.
Persistent diarrhea will be defined as 14 or more continuous days of diarrhea.
The presence of blood in the stool will also be noted as an indicator of severity.
|
Up to 12 months after birth
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協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
スポンサー
協力者
捜査官
- 主任研究者：Thomas Clasen, PhD、Emory University
- 主任研究者：Jennifer Peel, PhD、Colorado State University
- 主任研究者：William Checkley, MD PhD、Johns Hopkins School of Medicine
出版物と役立つリンク
研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。
一般刊行物
- Kearns KA, Naeher LP, McCracken JP, Boyd Barr D, Saikawa E, Hengstermann M, Mollinedo E, Panuwet P, Yakimavets V, Lee GE, Thompson LM. Estimating personal exposures to household air pollution and plastic garbage burning among adolescent girls in Jalapa, Guatemala. Chemosphere. 2024 Jan;348:140705. doi: 10.1016/j.chemosphere.2023.140705. Epub 2023 Nov 17.
- Younger A, Ye W, Alkon A, Harknett K, Kirby MA, Elon L, Lovvorn AE, Wang J, Diaz-Artiga A, McCracken JP, Castanaza Gonzalez A, Alarcon LM, Mukeshimana A, Rosa G, Chiang M, Balakrishnan K, Garg SS, Pillarisetti A, Piedrahita R, Johnson MA, Craik R, Papageorghiou AT, Toenjes A, Williams KN, Underhill LJ, Hartinger SM, Nicolaou L, Chang HH, Naeher LP, Rosenthal J, Checkley W, Peel JL, Clasen TF, Thompson LM; Household Air Pollution Intervention Network (HAPIN) Investigators. Effects of a liquefied petroleum gas stove intervention on stillbirth, congenital anomalies and neonatal mortality: A multi-country household air pollution intervention network trial. Environ Pollut. 2024 Mar 15;345:123414. doi: 10.1016/j.envpol.2024.123414. Epub 2024 Jan 27.
- Pillarisetti A, Ye W, Balakrishnan K, Rosa G, Diaz-Artiga A, Underhill LJ, Steenland K, Peel JL, Kirby MA, McCracken J, Waller L, Chang H, Wang J, Dusabimana E, Ndagijimana F, Sambandam S, Mukhopadhyay K, Kearns KA, Campbell D, Kremer J, Rosenthal J, Ghosh A, Clark M, Checkley W, Clasen T, Naeher L, Piedrahita R, Johnson M. Post-birth exposure contrasts for children during the Household Air Pollution Intervention Network randomized controlled trial. medRxiv [Preprint]. 2023 Jul 6:2023.07.04.23292226. doi: 10.1101/2023.07.04.23292226.
- Simkovich SM, Hossen S, McCollum ED, Toenjes AK, McCracken JP, Thompson LM, Castanaza A, Diaz A, Rosa G, Kirby MA, Mukeshimana A, Myers R, Lenzen PM, Craik R, Jabbarzadeh S, Elon L, Garg SS, Balakrishnan K, Thangavel G, Peel JL, Clasen TF, Davila-Roman VG, Papageorghiou AT, de las Fuentes L, Checkley W; HAPIN Investigators. Lung Ultrasound Protocol and Quality Control of Image Interpretation Using an Adjudication Panel in the Household Air Pollution Intervention Network (HAPIN) Trial. Ultrasound Med Biol. 2023 May;49(5):1194-1201. doi: 10.1016/j.ultrasmedbio.2023.01.005. Epub 2023 Feb 19.
- Williams KN, Quinn A, North H, Wang J, Pillarisetti A, Thompson LM, Diaz-Artiga A, Balakrishnan K, Thangavel G, Rosa G, Ndagijimana F, Underhill LJ, Kirby MA, Puzzolo E, Hossen S, Waller LA, Peel JL, Rosenthal JP, Clasen TF, Harvey SA, Checkley W; HAPIN Investigators. Fidelity and adherence to a liquefied petroleum gas stove and fuel intervention: The multi-country Household Air Pollution Intervention Network (HAPIN) trial. Environ Int. 2023 Sep;179:108160. doi: 10.1016/j.envint.2023.108160. Epub 2023 Aug 19.
- Younger A, Alkon A, Harknett K, Kirby MA, Elon L, Lovvorn AE, Wang J, Ye W, Diaz-Artiga A, McCracken JP, Castanaza Gonzalez A, Monroy Alarcon L, Mukeshimana A, Rosa G, Chiang M, Balakrishnan K, Garg SS, Pillarisetti A, Piedrahita R, Johnson M, Craik R, Papageorghiou AT, Toenjes A, Quinn A, Williams KN, Underhill L, Chang HH, Naeher LP, Rosenthal J, Checkley W, Peel JL, Clasen TF, Thompson LM; HAPIN investigators. Effects of a LPG stove and fuel intervention on adverse maternal outcomes: A multi-country randomized controlled trial conducted by the Household Air Pollution Intervention Network (HAPIN). Environ Int. 2023 Aug;178:108059. doi: 10.1016/j.envint.2023.108059. Epub 2023 Jun 28.
- Checkley W, Hossen S, Rosa G, Thompson LM, McCracken JP, Diaz-Artiga A, Balakrishnan K, Simkovich SM, Underhill LJ, Nicolaou L, Hartinger SM, Davila-Roman VG, Kirby MA, Clasen TF, Rosenthal J, Peel JL, On Behalf Of Household Air Pollution Intervention Network Hapin Investigators. Facing the Realities of Pragmatic Design Choices in Environmental Health Studies: Experiences from the Household Air Pollution Intervention Network Trial. Int J Environ Res Public Health. 2022 Mar 23;19(7):3790. doi: 10.3390/ijerph19073790.
- Hennessee I, Kirby MA, Misago X, Mupfasoni J, Clasen T, Kitron U, Rosenthal JP, Hakizimana E. Assessing the Effects of Cooking Fuels on Anopheles Mosquito Behavior: An Experimental Study in Rural Rwanda. Am J Trop Med Hyg. 2022 Feb 21;106(4):1196-1208. doi: 10.4269/ajtmh.21-0997. Print 2022 Apr 6.
- Johnson M, Pillarisetti A, Piedrahita R, Balakrishnan K, Peel JL, Steenland K, Underhill LJ, Rosa G, Kirby MA, Diaz-Artiga A, McCracken J, Clark ML, Waller L, Chang HH, Wang J, Dusabimana E, Ndagijimana F, Sambandam S, Mukhopadhyay K, Kearns KA, Campbell D, Kremer J, Rosenthal JP, Checkley W, Clasen T, Naeher L; the Household Air Pollution Intervention Network (HAPIN) Trial Investigators. Exposure Contrasts of Pregnant Women during the Household Air Pollution Intervention Network Randomized Controlled Trial. Environ Health Perspect. 2022 Sep;130(9):97005. doi: 10.1289/EHP10295. Epub 2022 Sep 16.
- Kaufman JD. Invited Perspective: A Critical Part of a Real-World Environmental Health Trial Is to Demonstrate That the Intervention Reduced Exposure. Environ Health Perspect. 2022 Sep;130(9):91304. doi: 10.1289/EHP11697. Epub 2022 Sep 16. No abstract available.
- Rajamani KD, Sambandam S, Mukhopadhyay K, Puttaswamy N, Thangavel G, Natesan D, Ramasamy R, Sendhil S, Natarajan A, Aravindalochan V, Pillarisetti A, Johnson M, Rosenthal J, Steenland K, Piedhrahita R, Peel J, Clark ML, Boyd Barr D, Rajkumar S, Young B, Jabbarzadeh S, Rosa G, Kirby M, Underhill LJ, Diaz-Artiga A, Lovvorn A, Checkley W, Clasen T, Balakrishnan K. Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India. J Vis Exp. 2022 Dec 23;(190). doi: 10.3791/64144.
- Ye W, Thangavel G, Pillarisetti A, Steenland K, Peel JL, Balakrishnan K, Jabbarzadeh S, Checkley W, Clasen T; HAPIN Investigators. Association between personal exposure to household air pollution and gestational blood pressure among women using solid cooking fuels in rural Tamil Nadu, India. Environ Res. 2022 May 15;208:112756. doi: 10.1016/j.envres.2022.112756. Epub 2022 Jan 20.
- Ye W, Steenland K, Quinn A, Liao J, Balakrishnan K, Rosa G, Ndagijimana F, Ntivuguruzwa JD, Thompson LM, McCracken JP, Diaz-Artiga A, Rosenthal JP, Papageorghiou A, Davila-Roman VG, Pillarisetti A, Johnson M, Wang J, Nicolaou L, Checkley W, Peel JL, Clasen TF; Household Air Pollution Intervention Network (HAPIN) trial Investigators. Effects of a Liquefied Petroleum Gas Stove Intervention on Gestational Blood Pressure: Intention-to-Treat and Exposure-Response Findings From the HAPIN Trial. Hypertension. 2022 Aug;79(8):1887-1898. doi: 10.1161/HYPERTENSIONAHA.122.19362. Epub 2022 Jun 16.
- Hengstermann M, Diaz-Artiga A, Otzoy-Sucuc R, Laura Maria Ruiz-Aguilar A, Thompson LM; HAPIN Investigators. Developing Visual Messages to Support Liquefied Petroleum Gas Use in Intervention Homes in the Household Air Pollution Intervention Network (HAPIN) Trial in Rural Guatemala. Health Educ Behav. 2021 Oct;48(5):651-669. doi: 10.1177/1090198121996280. Epub 2021 Mar 18.
- Liao J, Kirby MA, Pillarisetti A, Piedrahita R, Balakrishnan K, Sambandam S, Mukhopadhyay K, Ye W, Rosa G, Majorin F, Dusabimana E, Ndagijimana F, McCracken JP, Mollinedo E, de Leon O, Diaz-Artiga A, Thompson LM, Kearns KA, Naeher L, Rosenthal J, Clark ML, Steenland K, Waller LA, Checkley W, Peel JL, Clasen T, Johnson M; HAPIN Investigators. LPG stove and fuel intervention among pregnant women reduce fine particle air pollution exposures in three countries: Pilot results from the HAPIN trial. Environ Pollut. 2021 Dec 15;291:118198. doi: 10.1016/j.envpol.2021.118198. Epub 2021 Sep 21.
- Quinn AK, Williams KN, Thompson LM, Harvey SA, Piedrahita R, Wang J, Quinn C, Pillarisetti A, McCracken JP, Rosenthal JP, Kirby MA, Diaz Artiga A, Thangavel G, Rosa G, Miranda JJ, Checkley W, Peel JL, Clasen TF. Fidelity and Adherence to a Liquefied Petroleum Gas Stove and Fuel Intervention during Gestation: The Multi-Country Household Air Pollution Intervention Network (HAPIN) Randomized Controlled Trial. Int J Environ Res Public Health. 2021 Nov 29;18(23):12592. doi: 10.3390/ijerph182312592.
- Simkovich SM, Underhill LJ, Kirby MA, Crocker ME, Goodman D, McCracken JP, Thompson LM, Diaz-Artiga A, Castanaza-Gonzalez A, Garg SS, Balakrishnan K, Thangavel G, Rosa G, Peel JL, Clasen TF, McCollum ED, Checkley W; HAPIN Investigators. Resources and Geographic Access to Care for Severe Pediatric Pneumonia in Four Resource-limited Settings. Am J Respir Crit Care Med. 2022 Jan 15;205(2):183-197. doi: 10.1164/rccm.202104-1013OC.
- Barr DB, Puttaswamy N, Jaacks LM, Steenland K, Rajkumar S, Gupton S, Ryan PB, Balakrishnan K, Peel JL, Checkley W, Clasen T, Clark ML; (HAPIN Investigative Team). Design and Rationale of the Biomarker Center of the Household Air Pollution Intervention Network (HAPIN) Trial. Environ Health Perspect. 2020 Apr;128(4):47010. doi: 10.1289/EHP5751. Epub 2020 Apr 29.
- Burrowes VJ, Piedrahita R, Pillarisetti A, Underhill LJ, Fandino-Del-Rio M, Johnson M, Kephart JL, Hartinger SM, Steenland K, Naeher L, Kearns K, Peel JL, Clark ML, Checkley W; HAPIN Investigators. Comparison of next-generation portable pollution monitors to measure exposure to PM2.5 from household air pollution in Puno, Peru. Indoor Air. 2020 May;30(3):445-458. doi: 10.1111/ina.12638. Epub 2020 Jan 23.
- Clasen T, Checkley W, Peel JL, Balakrishnan K, McCracken JP, Rosa G, Thompson LM, Barr DB, Clark ML, Johnson MA, Waller LA, Jaacks LM, Steenland K, Miranda JJ, Chang HH, Kim DY, McCollum ED, Davila-Roman VG, Papageorghiou A, Rosenthal JP; HAPIN Investigators. Design and Rationale of the HAPIN Study: A Multicountry Randomized Controlled Trial to Assess the Effect of Liquefied Petroleum Gas Stove and Continuous Fuel Distribution. Environ Health Perspect. 2020 Apr;128(4):47008. doi: 10.1289/EHP6407. Epub 2020 Apr 29.
- Crocker ME, Hossen S, Goodman D, Simkovich SM, Kirby M, Thompson LM, Rosa G, Garg SS, Thangavel G, McCollum ED, Peel J, Clasen T, Checkley W; HAPIN Investigators. Effects of high altitude on respiratory rate and oxygen saturation reference values in healthy infants and children younger than 2 years in four countries: a cross-sectional study. Lancet Glob Health. 2020 Mar;8(3):e362-e373. doi: 10.1016/S2214-109X(19)30543-1.
- Johnson MA, Steenland K, Piedrahita R, Clark ML, Pillarisetti A, Balakrishnan K, Peel JL, Naeher LP, Liao J, Wilson D, Sarnat J, Underhill LJ, Burrowes V, McCracken JP, Rosa G, Rosenthal J, Sambandam S, de Leon O, Kirby MA, Kearns K, Checkley W, Clasen T; HAPIN Investigators. Air Pollutant Exposure and Stove Use Assessment Methods for the Household Air Pollution Intervention Network (HAPIN) Trial. Environ Health Perspect. 2020 Apr;128(4):47009. doi: 10.1289/EHP6422. Epub 2020 Apr 29.
- Puttaswamy N, Saidam S, Rajendran G, Arumugam K, Gupton S, Williams EW, Johnson CL, Panuwet P, Rajkumar S, Clark ML, Peel JL, Checkley W, Clasen T, Balakrishnan K, Barr DB. Cross-validation of biomonitoring methods for polycyclic aromatic hydrocarbon metabolites in human urine: Results from the formative phase of the Household Air Pollution Intervention Network (HAPIN) trial in India. J Chromatogr B Analyt Technol Biomed Life Sci. 2020 Oct 1;1154:122284. doi: 10.1016/j.jchromb.2020.122284. Epub 2020 Jul 29.
- Sambandam S, Mukhopadhyay K, Sendhil S, Ye W, Pillarisetti A, Thangavel G, Natesan D, Ramasamy R, Natarajan A, Aravindalochanan V, Vinayagamoorthi A, Sivavadivel S, Uma Maheswari R, Balakrishnan L, Gayatri S, Nargunanathan S, Madhavan S, Puttaswamy N, Garg SS, Quinn A, Rosenthal J, Johnson M, Liao J, Steenland K, Piedhrahita R, Peel J, Checkley W, Clasen T, Balakrishnan K. Exposure contrasts associated with a liquefied petroleum gas (LPG) intervention at potential field sites for the multi-country household air pollution intervention network (HAPIN) trial in India: results from pilot phase activities in rural Tamil Nadu. BMC Public Health. 2020 Nov 26;20(1):1799. doi: 10.1186/s12889-020-09865-1.
- Simkovich SM, Underhill LJ, Kirby MA, Goodman D, Crocker ME, Hossen S, McCracken JP, de Leon O, Thompson LM, Garg SS, Balakrishnan K, Thangavel G, Rosa G, Peel JL, Clasen TF, McCollum ED, Checkley W. Design and conduct of facility-based surveillance for severe childhood pneumonia in the Household Air Pollution Intervention Network (HAPIN) trial. ERJ Open Res. 2020 Mar 23;6(1):00308-2019. doi: 10.1183/23120541.00308-2019. eCollection 2020 Jan.
- Williams KN, Thompson LM, Sakas Z, Hengstermann M, Quinn A, Diaz-Artiga A, Thangavel G, Puzzolo E, Rosa G, Balakrishnan K, Peel J, Checkley W, Clasen TF, Miranda JJ, Rosenthal JP, Harvey SA; Household Air Pollution Intervention Network (HAPIN) trial Investigators; HAPIN Investigators. Designing a comprehensive behaviour change intervention to promote and monitor exclusive use of liquefied petroleum gas stoves for the Household Air Pollution Intervention Network (HAPIN) trial. BMJ Open. 2020 Sep 29;10(9):e037761. doi: 10.1136/bmjopen-2020-037761.
- Wilson DL, Williams KN, Pillarisetti A. 2020. An Integrated Sensor Data Logging, Survey, and Analytics Platform for Field Research and Its Application in HAPIN, a Multi-Center Household Energy Intervention Trial. Sustainability. 2020; 12 (5): 1805. doi:10.3390/su12051805.
- Goodman D, Crocker ME, Pervaiz F, McCollum ED, Steenland K, Simkovich SM, Miele CH, Hammitt LL, Herrera P, Zar HJ, Campbell H, Lanata CF, McCracken JP, Thompson LM, Rosa G, Kirby MA, Garg S, Thangavel G, Thanasekaraan V, Balakrishnan K, King C, Clasen T, Checkley W; HAPIN Investigators. Challenges in the diagnosis of paediatric pneumonia in intervention field trials: recommendations from a pneumonia field trial working group. Lancet Respir Med. 2019 Dec;7(12):1068-1083. doi: 10.1016/S2213-2600(19)30249-8. Epub 2019 Oct 4.
- Quinn AK, Williams K, Thompson LM, Rosa G, Diaz-Artiga A, Thangavel G, Balakrishnan K, Miranda JJ, Rosenthal JP, Clasen TF, Harvey SA; HAPIN Investigators. Compensating control participants when the intervention is of significant value: experience in Guatemala, India, Peru and Rwanda. BMJ Glob Health. 2019 Aug 21;4(4):e001567. doi: 10.1136/bmjgh-2019-001567. eCollection 2019.
- Steenland K, Pillarisetti A, Kirby M, Peel J, Clark M, Checkley W, Chang HH, Clasen T. Modeling the potential health benefits of lower household air pollution after a hypothetical liquified petroleum gas (LPG) cookstove intervention. Environ Int. 2018 Feb;111:71-79. doi: 10.1016/j.envint.2017.11.018. Epub 2017 Nov 26.
- Checkley W, Thompson LM, Sinharoy SS, Hossen S, Moulton LH, Chang HH, Waller L, Steenland K, Rosa G, Mukeshimana A, Ndagijimana F, McCracken JP, Diaz-Artiga A, Balakrishnan K, Garg SS, Thangavel G, Aravindalochanan V, Hartinger SM, Chiang M, Kirby MA, Papageorghiou AT, Ramakrishnan U, Williams KN, Nicolaou L, Johnson M, Pillarisetti A, Rosenthal J, Underhill LJ, Wang J, Jabbarzadeh S, Chen Y, Davila-Roman VG, Naeher LP, McCollum ED, Peel JL, Clasen TF; HAPIN Investigators. Effects of Cooking with Liquefied Petroleum Gas or Biomass on Stunting in Infants. N Engl J Med. 2024 Jan 4;390(1):44-54. doi: 10.1056/NEJMoa2302687.
- McCollum ED, McCracken JP, Kirby MA, Grajeda LM, Hossen S, Moulton LH, Simkovich SM, Goodman-Palmer D, Rosa G, Mukeshimana A, Balakrishnan K, Thangavel G, Garg SS, Castanaza A, Thompson LM, Diaz-Artiga A, Papageorghiou AT, Davila-Roman VG, Underhill LJ, Hartinger SM, Williams KN, Nicolaou L, Chang HH, Lovvorn AE, Rosenthal JP, Pillarisetti A, Ye W, Naeher LP, Johnson MA, Waller LA, Jabbarzadeh S, Wang J, Chen Y, Steenland K, Clasen TF, Peel JL, Checkley W; HAPIN Investigators. Liquefied Petroleum Gas or Biomass Cooking and Severe Infant Pneumonia. N Engl J Med. 2024 Jan 4;390(1):32-43. doi: 10.1056/NEJMoa2305681.
- Balakrishnan K, Steenland K, Clasen T, Chang H, Johnson M, Pillarisetti A, Ye W, Naeher LP, Diaz-Artiga A, McCracken JP, Thompson LM, Rosa G, Kirby MA, Thangavel G, Sambandam S, Mukhopadhyay K, Puttaswamy N, Aravindalochanan V, Garg S, Ndagijimana F, Hartinger S, Underhill LJ, Kearns KA, Campbell D, Kremer J, Waller L, Jabbarzadeh S, Wang J, Chen Y, Rosenthal J, Quinn A, Papageorghiou AT, Ramakrishnan U, Howards PP, Checkley W, Peel JL; HAPIN Investigators. Exposure-response relationships for personal exposure to fine particulate matter (PM2.5), carbon monoxide, and black carbon and birthweight: an observational analysis of the multicountry Household Air Pollution Intervention Network (HAPIN) trial. Lancet Planet Health. 2023 May;7(5):e387-e396. doi: 10.1016/S2542-5196(23)00052-9.
- Clasen TF, Chang HH, Thompson LM, Kirby MA, Balakrishnan K, Diaz-Artiga A, McCracken JP, Rosa G, Steenland K, Younger A, Aravindalochanan V, Barr DB, Castanaza A, Chen Y, Chiang M, Clark ML, Garg S, Hartinger S, Jabbarzadeh S, Johnson MA, Kim DY, Lovvorn AE, McCollum ED, Monroy L, Moulton LH, Mukeshimana A, Mukhopadhyay K, Naeher LP, Ndagijimana F, Papageorghiou A, Piedrahita R, Pillarisetti A, Puttaswamy N, Quinn A, Ramakrishnan U, Sambandam S, Sinharoy SS, Thangavel G, Underhill LJ, Waller LA, Wang J, Williams KN, Rosenthal JP, Checkley W, Peel JL; HAPIN Investigators. Liquefied Petroleum Gas or Biomass for Cooking and Effects on Birth Weight. N Engl J Med. 2022 Nov 10;387(19):1735-1746. doi: 10.1056/NEJMoa2206734. Epub 2022 Oct 10.
- Simkovich SM, Thompson LM, Clark M, Balakrishnan K, Bussalleu A, Checkley W, Clasen T, Davila-Roman V, Diaz-Artiga A, de las Fuentes L, Harvey S, Kirby M, Lovvorn A, McCollum E, Peel J, Quinn A, Rosa G, Underhill L, Williams K, Young B, Rosenthal J. A Risk Assessment Tool for Resumption of Research Activities During the COVID-19 Pandemic. Res Sq [Preprint]. 2020 Nov 12:rs.3.rs-103997. doi: 10.21203/rs.3.rs-103997/v1.
- Nicolaou L, Underhill L, Hossen S, Simkovich S, Thangavel G, Rosa G, McCracken JP, Davila-Roman V, de las Fuentes L, Quinn AK, Clark M, Diaz A, Pillarisetti A, Steenland K, Waller LA, Jabbarzadeh S, Peel JL, Checkley W; HAPIN Investigators. Cross-sectional analysis of the association between personal exposure to household air pollution and blood pressure in adult women: Evidence from the multi-country Household Air Pollution Intervention Network (HAPIN) trial. Environ Res. 2022 Nov;214(Pt 4):114121. doi: 10.1016/j.envres.2022.114121. Epub 2022 Aug 24.
- Davila-Roman VG, Toenjes AK, Meyers RM, Lenzen PM, Simkovich SM, Herrera P, Fung E, Papageorghiou AT, Craik R, McCracken JP, Thompson LM, Balakrishnan K, Rosa G, Peel J, Clasen TF, Hossen S, Checkley W, de las Fuentes L; HAPIN Investigators. Ultrasound Core Laboratory for the Household Air Pollution Intervention Network Trial: Standardized Training and Image Management for Field Studies Using Portable Ultrasound in Fetal, Lung, and Vascular Evaluations. Ultrasound Med Biol. 2021 Jun;47(6):1506-1513. doi: 10.1016/j.ultrasmedbio.2021.02.015. Epub 2021 Apr 1.
- Simkovich SM, Thompson LM, Clark ML, Balakrishnan K, Bussalleu A, Checkley W, Clasen T, Davila-Roman VG, Diaz-Artiga A, Dusabimana E, de las Fuentes L, Harvey S, Kirby MA, Lovvorn A, McCollum ED, Mollinedo EE, Peel JL, Quinn A, Rosa G, Underhill LJ, Williams KN, Young BN, Rosenthal J; HAPIN Investigators. A risk assessment tool for resumption of research activities during the COVID-19 pandemic for field trials in low resource settings. BMC Med Res Methodol. 2021 Apr 12;21(1):68. doi: 10.1186/s12874-021-01232-x.
- Liao J, McCracken JP, Piedrahita R, Thompson L, Mollinedo E, Canuz E, De Leon O, Diaz-Artiga A, Johnson M, Clark M, Pillarisetti A, Kearns K, Naeher L, Steenland K, Checkley W, Peel J, Clasen TF; HAPIN investigators. The use of bluetooth low energy Beacon systems to estimate indirect personal exposure to household air pollution. J Expo Sci Environ Epidemiol. 2020 Nov;30(6):990-1000. doi: 10.1038/s41370-019-0172-z. Epub 2019 Sep 26.
- Pillarisetti A, Ye W, Peel JL, Chang H, Underhill LJ, Balakrishnan K, Diaz-Artiga A, McCracken JP, Rosa G, Thompson LM, Aravindalochanan V, Boyd Barr D, Chen Y, Chiang M, Clark ML, Davila-Roman V, Jabbarzadeh S, Johnson MA, Kirby MA, Lovvorn AE, Naeher LP, Ndagijimana F, Piedrahita R, Puttaswamy N, Waller LA, Wang J, Williams KN, Nicolaou L, Checkley W, Clasen TF, Rosenthal JP, Steenland K; HAPIN Investigators. Household air pollution and blood pressure among adult women participants of the Household Air Pollution Intervention Network Trial: An exposure-response analysis. Environ Res. 2025 Nov 15;285(Pt 5):122570. doi: 10.1016/j.envres.2025.122570. Epub 2025 Aug 12.
- Sivalogan K, Stein AD, Thompson LM, Wang J, Diaz-Artiga A, Aravindalochanan V, Jabbarzadeh S, Nicolaou L, Williams KN, Balakrishnan K, Peel JL, Checkley W, Clasen T, Sinharoy SS; HAPIN investigators. Provision of a liquefied petroleum gas cookstove and fuel during pregnancy and infancy and linear growth trajectories between birth and 12 months: evidence from the multi-center Household Air Pollution Intervention Network (HAPIN) trial. medRxiv [Preprint]. 2025 Jun 6:2025.06.05.25329099. doi: 10.1101/2025.06.05.25329099.
- Quinn A, Hengstermann M, Diaz-Artiga A, Pillarisetti A, Clark M, Ruiz-Aguilar L, Ndagijimana F, McCracken JP, Rosa G, Checkley W, Peel J, Clasen TF, Thompson L; HAPIN Investigators. Development of personal air pollution exposure report-back materials to Household Air Pollution Intervention Network (HAPIN) trial participants in Guatemala and Rwanda: a qualitative study. BMJ Glob Health. 2025 May 15;10(5):e017672. doi: 10.1136/bmjgh-2024-017672.
- Raheel H, Sinharoy S, Diaz-Artiga A, Garg SS, Pillarisetti A, Balakrishnan K, Chiang M, Lovvorn A, Kirby M, Ramakrishnan U, Jabbarzadeh S, Mukeshimana A, Johnson M, McCracken JP, Naeher LP, Rosa G, Wang J, Rosenthal J, Checkley W, Clasen TF, Peel JL, Thompson LM; Household Air Pollution Intervention Network (HAPIN) investigators. Effects of a liquefied petroleum gas stove and fuel intervention on head circumference and length at birth: A multi-country household air pollution intervention network (HAPIN) trial. Environ Int. 2025 Jan;195:109211. doi: 10.1016/j.envint.2024.109211. Epub 2024 Dec 24.
- Patil SS, Puttaswamy N, Cardenas A, Barr DB, Ghosh S, Balakrishnan K. Protocol for CARES-HAPIN: an ambidirectional cohort study on exposure to environmental tobacco smoke and risk of early childhood caries. BMJ Open. 2024 May 15;14(5):e083874. doi: 10.1136/bmjopen-2024-083874.
- Sivalogan K, Liang D, Accardi C, Diaz-Artiga A, Hu X, Mollinedo E, Ramakrishnan U, Teeny SN, Tran V, Clasen TF, Thompson LM, Sinharoy SS. Human Milk Composition Is Associated with Maternal Body Mass Index in a Cross-Sectional, Untargeted Metabolomics Analysis of Human Milk from Guatemalan Mothers. Curr Dev Nutr. 2024 Apr 10;8(5):102144. doi: 10.1016/j.cdnut.2024.102144. eCollection 2024 May.
- Checkley W, Thompson LM, Hossen S, Nicolaou L, Williams KN, Hartinger SM, Chiang M, Balakrishnan K, Garg SS, Thangavel G, Aravindalochanan V, Rosa G, Mukeshimana A, Ndagijimana F, McCracken JP, Diaz-Artiga A, Sinharoy SS, Waller L, Wang J, Jabbarzadeh S, Chen Y, Steenland K, Kirby MA, Ramakrishnan U, Johnson M, Pillarisetti A, McCollum ED, Craik R, Ohuma EO, Davila-Roman VG, de las Fuentes L, Simkovich SM, Peel JL, Clasen TF, Papageorghiou AT; Household Air Pollution Intervention Network (HAPIN) Investigators. Cooking with liquefied petroleum gas or biomass and fetal growth outcomes: a multi-country randomised controlled trial. Lancet Glob Health. 2024 May;12(5):e815-e825. doi: 10.1016/S2214-109X(24)00033-0.
- Mollinedo E, McCracken JP, Johnson M, Piedrahita R, Pillarisetti A, Waller LA, Wang J, Thompson LM, Diaz-Artiga A, de Leon O, Ramirez A, Polanco A, Campbell D, Kearns KA, Kremer J, Nicolaou L, Clark ML, Balakrishnan K, Rosa G, Peel JL, Checkley W, Clasen TF, Naeher LP. Comparing Performance and Reliability of Collocated Enhanced Children's MicroPEM (ECM) on Gravimetric and Nephelometric PM2.5 Personal Exposure Samples in Field Measurements in Rural Guatemala. Indoor Air. 2025;2025:8812602. doi: 10.1155/ina/8812602. Epub 2025 Jan 2.
- Sivalogan K, Stein AD, Thompson LM, Wang J, Diaz-Artiga A, Aravindalochanan V, Jabbarzadeh S, Lovvorn AE, Ndagijimana F, Nicolaou L, Williams KN, Balakrishnan K, Peel JL, Checkley W, Clasen T, Sinharoy SS; HAPIN investigators paragraph sign. Provision of a liquefied petroleum gas cookstove and fuel during pregnancy and infancy and linear growth trajectories between birth and 12 months: Evidence from the multi-center Household Air Pollution Intervention Network (HAPIN) trial. PLOS Glob Public Health. 2025 Dec 31;5(12):e0004831. doi: 10.1371/journal.pgph.0004831. eCollection 2025.
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (実際)
2017年9月1日
一次修了 (実際)
2025年6月30日
研究の完了 (実際)
2025年6月30日
試験登録日
最初に提出
2016年10月17日
QC基準を満たした最初の提出物
2016年10月24日
最初の投稿 (推定)
2016年10月26日
学習記録の更新
投稿された最後の更新 (実際)
2026年5月11日
QC基準を満たした最後の更新が送信されました
2026年5月7日
最終確認日
2026年5月1日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。