Environmental and Geographic Patterns of Occupational Injuries (WEATHER-WORK)
2026年8月6日 更新者：Sergio Gabriel Susmallian
Environmental and Geographic Patterns of Occupational Injuries: A Population-Based Retrospective Study
This study will determine whether extreme ambient temperatures increase the incidence and severity of occupational injuries in Israel, and we request Helsinki Committee approval to conduct the analysis using de-identified National Insurance and historical meteorological data, with a waiver of informed consent.
The project will link the date, time, and geographic location of recognized occupational accidents with corresponding historical temperature and humidity measurements.
The study is retrospective, observational, and involves no direct contact with participants, no intervention, and no alteration of medical care or benefit eligibility.
調査の概要
詳細な説明
Occupational injuries represent an important source of preventable morbidity, permanent disability, loss of employment, and economic burden.
Rising temperatures and increasingly frequent heatwaves may impair concentration, coordination, judgment, reaction time, hydration, and physical endurance, particularly among workers in construction, agriculture, transportation, manufacturing, and other outdoor or physically demanding occupations.
However, the national relationship between ambient heat and work-related injury in Israel has not been adequately quantified.
Without reliable population-level evidence, employers, occupational-health authorities, and policymakers cannot identify temperature thresholds at which preventive measures should be intensified or determine which workers and industries are at greatest risk.
研究の種類
観察的
入学 (実際)
350000
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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Rishon LeZiyyon、イスラエル、7526557
- Israel National Insurance Institute
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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
- 大人
- 高齢者
健康ボランティアの受け入れ
いいえ
サンプリング方法
確率サンプル
調査対象母集団
The study population will include adults aged 18 years or older with occupational injuries recognized by the National Insurance Institute between January 1, 2020, and December 31, 2024.
Eligible records will be selected from the national occupational-injury administrative database and assigned to one of seven predefined geographic-climatic regions according to the workplace or accident location.
Environmental exposure will be determined by linking each injury date, time, and location to the nearest representative meteorological monitoring station.
The study will include workplace, occupational-traffic, and commuting injuries meeting the prespecified eligibility criteria.
説明
Inclusion Criteria:
- Individuals aged 18 years or older with an occupational injury recognized by the National Insurance Institute.
- Occupational injury occurring between January 1, 2020, and December 31, 2024.
- Injury occurring at the workplace, during occupational travel, or while commuting to or from work.
- Valid injury date and geographic information sufficient to assign the accident to one of the seven predefined geographic-climatic regions and the nearest representative meteorological station.
- Meteorological measurements available for the injury period and eligible matched control periods.
For time-specific analyses, a valid recorded accident time permitting linkage to the closest preceding three-hour meteorological observation.
Exclusion Criteria:
- Occupational diseases, repetitive-exposure conditions, or gradual-onset disorders without a clearly defined accident date.
- Rejected, withdrawn, or unconfirmed occupational-injury claims.
- Missing or invalid accident date or geographic information preventing linkage with meteorological data.
- Accidents occurring outside the predefined geographic-climatic regions or beyond the prespecified maximum distance from an eligible meteorological station.
- Duplicate or administratively repeated records referring to the same occupational-injury event.
- Injury events for which no eligible matched control periods or corresponding meteorological measurements are available.
- Individuals younger than 18 years.
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
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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Northern valleys and inland north
Occupational injuries occurring in the northern valleys and inland northern region will be assigned to this geographic-climatic division according to the location of the workplace or accident.
Meteorological exposure will be determined using data from the nearest representative monitoring station, including Dafna, Tavor Kadoorie, or Nazareth.
This region is characterized by inland climatic conditions with substantial seasonal variation in temperature and humidity.
Accident occurrence and severity will be evaluated in relation to temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
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Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Northern Mediterranean coast
Occupational injuries occurring along the northern Mediterranean coastal region will be assigned to this geographic-climatic division according to the location of the workplace or accident.
Meteorological exposure will be determined using data from the Haifa Technion monitoring station or the nearest available representative station.
This region is characterized by a Mediterranean coastal climate, with relatively high humidity, moderate winter temperatures, warm summers, and frequent sea-breeze effects.
Accident occurrence and severity will be evaluated in relation to ambient temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
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Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Central Mediterranean coast
Occupational injuries occurring within the central Mediterranean coastal region will be assigned to this geographic-climatic division according to the workplace or accident location.
Meteorological exposure will be determined using data from the Tel Aviv Coast monitoring station or the nearest available representative station.
This region is characterized by a warm Mediterranean climate, relatively high humidity, mild winters, hot summers, and frequent sea-breeze effects.
The occurrence and severity of occupational injuries will be evaluated in relation to ambient temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
|
Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Southern Mediterranean coast
Occupational injuries occurring within the southern Mediterranean coastal region will be assigned to this geographic-climatic division according to the workplace or accident location.
Meteorological exposure will be determined using data from the Ashqelon Port monitoring station or the nearest available representative station.
This region is characterized by a warm coastal Mediterranean climate, relatively high humidity, mild winters, hot summers, and frequent sea-breeze effects.
The occurrence and severity of occupational injuries will be evaluated in relation to ambient temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
|
Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Central highlands
Occupational injuries occurring within the central highlands region will be assigned to this geographic-climatic division according to the workplace or accident location.
Meteorological exposure will be determined using data from the Jerusalem Centre monitoring station or the nearest available representative station.
This region is characterized by higher elevation, lower average humidity than the coastal areas, greater day-night temperature variation, cooler winters, and warm, dry summers.
The occurrence and severity of occupational injuries will be evaluated in relation to ambient temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
|
Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Negev desert
Occupational injuries occurring within the Negev desert region will be assigned to this geographic-climatic division according to the workplace or accident location.
Meteorological exposure will be determined using data from the Avdat monitoring station or the nearest available representative station.
This region is characterized by an arid desert climate, very low relative humidity, intense solar exposure, high daytime temperatures, substantial day-night temperature variation, and limited rainfall.
The occurrence and severity of occupational injuries will be evaluated in relation to ambient temperature, relative humidity, wind speed, extreme heat, extreme cold, and other predefined environmental indicators.
|
Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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Dead Sea and extreme arid region
Occupational injuries occurring within the Dead Sea and extreme arid region will be assigned to this geographic-climatic division according to the workplace or accident location.
Meteorological exposure will be determined using data from the Massada monitoring station or the nearest available representative station.
This region is characterized by very low elevation, an extremely hot and arid climate, low annual rainfall, intense solar radiation, prolonged periods of extreme heat, and substantial seasonal temperature variation.
The occurrence and severity of occupational injuries will be evaluated in relation to ambient temperature, relative humidity, extreme heat, extreme cold, and other predefined environmental indicators.
Wind speed will be analyzed when reliable measurements are available.
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Ambient temperature, relative humidity, and wind speed at the occupational-injury location and time will be retrospectively obtained from the nearest representative meteorological monitoring station.
Environmental exposures will be analyzed in relation to occupational-injury occurrence and severity.
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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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Occurrence of Recognized Occupational Injury During Case Versus Matched Control Periods
時間枠：At the index injury date and matched control dates, January 1, 2020-December 31, 2024.
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The number of accepted occupational-injury events occurring during predefined case periods will be evaluated in relation to ambient temperature, relative humidity, and wind speed obtained from the nearest representative meteorological station.
Each injury period will be compared with control periods matched by geographic-climatic region, calendar year and month, day of the week, and three-hour time interval.
The association between environmental exposure and occupational-injury occurrence will be estimated using time-stratified case-crossover analysis with conditional logistic regression.
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At the index injury date and matched control dates, January 1, 2020-December 31, 2024.
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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。
捜査官
- スタディディレクター：Eytan Ellenberg, M.D.、Israel National Insurance Institute
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
- Calkins MM, Bonauto D, Hajat A, Lieblich M, Seixas N, Sheppard L, Spector JT. A case-crossover study of heat exposure and injury risk among outdoor construction workers in Washington State. Scand J Work Environ Health. 2019 Nov 1;45(6):588-599. doi: 10.5271/sjweh.3814. Epub 2019 Mar 14.
- Sheng R, Li C, Wang Q, Yang L, Bao J, Wang K, Ma R, Gao C, Lin S, Zhang Y, Bi P, Fu C, Huang C. Does hot weather affect work-related injury? A case-crossover study in Guangzhou, China. Int J Hyg Environ Health. 2018 Apr;221(3):423-428. doi: 10.1016/j.ijheh.2018.01.005. Epub 2018 Jan 11.
- Marinaccio A, Scortichini M, Gariazzo C, Leva A, Bonafede M, De' Donato FK, Stafoggia M, Viegi G, Michelozzi P; BEEP Collaborative Group. Nationwide epidemiological study for estimating the effect of extreme outdoor temperature on occupational injuries in Italy. Environ Int. 2019 Dec;133(Pt A):105176. doi: 10.1016/j.envint.2019.105176. Epub 2019 Oct 22.
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)
2020年1月1日
一次修了 (実際)
2024年12月31日
研究の完了 (推定)
2026年12月31日
試験登録日
最初に提出
2026年8月2日
QC基準を満たした最初の提出物
2026年8月2日
最初の投稿 (実際)
2026年8月6日
学習記録の更新
投稿された最後の更新 (実際)
2026年8月7日
QC基準を満たした最後の更新が送信されました
2026年8月6日
最終確認日
2026年8月1日
詳しくは
本研究に関する用語
その他の研究ID番号
- BTL 001-2026
- work accidents and weather (その他の識別子：Israel National Insurance Institute)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
いいえ
IPD プランの説明
Individual participant data will not be publicly shared because the study uses confidential administrative records owned and controlled by the National Insurance Institute.
Access is restricted to authorized researchers within a secure research environment and is governed by institutional confidentiality agreements, data-protection requirements, and applicable privacy legislation.
The combination of accident dates, geographic information, occupational characteristics, and disability outcomes may create a residual risk of participant re-identification even after removal of direct identifiers.
Only aggregated, disclosure-controlled results approved by the data custodian may be reported or published.
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
いいえ
米国FDA規制機器製品の研究
いいえ
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