Changing Population Salt Consumption in Lithgow, Australia
A Before After Comparison of the Effectiveness of a Community-based Salt Reduction Program Done in Lithgow, Australia
調査の概要
詳細な説明
The primary objective of this project is to determine whether there have been changes in average salt consumption levels in the Lithgow population from 2011 to 2014. The primary null hypothesis to be tested is that there will be no difference between the mean 24-hour urinary sodium excretion levels between 2011 and 2014.
The sample of 419 individuals with 24-hour urine samples in the baseline survey and 600 individuals in the follow-up survey will provide 80% power to detect a difference of 0.7 g/day salt between the mean levels of excretion before and after the intervention. There will be more than 95% power to detect a difference of 1.0 g/day salt or greater.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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New South Wales
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Camperdown、New South Wales、オーストラリア、2050
- The George Institute for Global Health
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- All adults over the age of 20 years residing in the Lithgow area are eligible
- No exclusion based on inter-current illness, use of medications or any other aspect of demography or personal history.
研究計画
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:処理
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- 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:Salt reduction
Community-based salt reduction
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他の名前:
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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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Urinary sodium excretion (mmol/l)
時間枠:up to 4 years
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A single 24-hour urine collection will be obtained with the first voided urine upon waking on the day of collection being discarded and participants then collecting all voided urine up to and including the first void the following morning.
The times at the beginning and the end of urine collection are recorded.
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up to 4 years
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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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Sources of sodium
時間枠:up to 4 years
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The multiple pass 24-hour dietary recall is used to determine all food and beverages consumed from midnight to midnight on the day before the interview, this method has been described in detail by prior reports.
Food model booklets are used to assist with the reporting of quantity and prompts provided by interviewers are used to probe for complete food descriptions, variable recipe ingredients, and food preparation including salt added during cooking and at the table.
Dietary data are entered into the nutrient analysis package FoodWorks Professional version 7. The food coding guidelines are used to code each food and beverage into major, sub-major and minor food categories.
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up to 4 years
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Knowledge, attitudes and behaviors towards salt intake
時間枠:up to 4 years
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The measurement of knowledge attitude and behaviors towards salt is based upon a questionnaire adapted from the World Health Organization/Pan American Health Organization protocol for population level sodium determination.
The questionnaire contains nine questions; four related to knowledge of personal consumption, recommended daily intake and possible harmful effects of salt and five assessing attitudes and behaviors to lowering salt intake.
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up to 4 years
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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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Urinary iodine excretion (ug/l)
時間枠:up to 4 years
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UIE will be assessed in the spot urine samples of females aged 20-45 years old.
The measurement will be completed by using ammonium persulfate digestion prior to Sandell-Koltoff reaction in a microtitre plate format.
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up to 4 years
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協力者と研究者
出版物と役立つリンク
一般刊行物
- Land MA, Webster J, Christoforou A, Johnson C, Trevena H, Hodgins F, Chalmers J, Woodward M, Barzi F, Smith W, Flood V, Jeffery P, Nowson C, Neal B. The association of knowledge, attitudes and behaviours related to salt with 24-hour urinary sodium excretion. Int J Behav Nutr Phys Act. 2014 Apr 4;11(1):47. doi: 10.1186/1479-5868-11-47.
- Land MA, Webster J, Christoforou A, Praveen D, Jeffery P, Chalmers J, Smith W, Woodward M, Barzi F, Nowson C, Flood V, Neal B. Salt intake assessed by 24 h urinary sodium excretion in a random and opportunistic sample in Australia. BMJ Open. 2014 Jan 16;4(1):e003720. doi: 10.1136/bmjopen-2013-003720.
- Land MA, Jeffery P, Webster J, Crino M, Chalmers J, Woodward M, Nowson C, Smith W, Flood V, Neal B. Protocol for the implementation and evaluation of a community-based intervention seeking to reduce dietary salt intake in Lithgow, Australia. BMC Public Health. 2014 Apr 14;14:357. doi: 10.1186/1471-2458-14-357.
- Land MA, Wu JH, Selwyn A, Crino M, Woodward M, Chalmers J, Webster J, Nowson C, Jeffery P, Smith W, Flood V, Neal B. Effects of a community-based salt reduction program in a regional Australian population. BMC Public Health. 2016 May 11;16:388. doi: 10.1186/s12889-016-3064-3.
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
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。