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Environmental and Geographic Patterns of Occupational Injuries (WEATHER-WORK)

6. August 2026 aktualisiert von: 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.

Studienübersicht

Status

Aktiv, nicht rekrutierend

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

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.

Studientyp

Beobachtungs

Einschreibung (Tatsächlich)

350000

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

  • Israel
      • Rishon LeZiyyon, Israel, 7526557
        • Israel National Insurance Institute

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Probenahmeverfahren

Wahrscheinlichkeitsstichprobe

Studienpopulation

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.

Beschreibung

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.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.
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.
Sonstiges: Ambient Weather Exposure
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.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Occurrence of Recognized Occupational Injury During Case Versus Matched Control Periods
Zeitfenster: At the index injury date and matched control dates, January 1, 2020-December 31, 2024.
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.
At the index injury date and matched control dates, January 1, 2020-December 31, 2024.

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Sergio Gabriel Susmallian

Ermittler

  • Studienleiter: Eytan Ellenberg, M.D., Israel National Insurance Institute

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

1. Januar 2020

Primärer Abschluss (Tatsächlich)

31. Dezember 2024

Studienabschluss (Geschätzt)

31. Dezember 2026

Studienanmeldedaten

Zuerst eingereicht

2. August 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

2. August 2026

Zuerst gepostet (Tatsächlich)

6. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

7. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

6. August 2026

Zuletzt verifiziert

1. August 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • BTL 001-2026
  • work accidents and weather (Andere Kennung: Israel National Insurance Institute)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

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.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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