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A Case-Crossover Study of Heat Exposure and Injury Risk in Outdoor Agricultural Workers

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  • June T Spector
  • David K Bonauto
  • Lianne Sheppard
  • Tania Busch-Isaksen
  • Miriam Calkins
  • Darrin Adams
  • Max Lieblich
  • Richard A Fenske

Abstract

Background: Recent research suggests that heat exposure may increase the risk of traumatic injuries. Published heat-related epidemiological studies have relied upon exposure data from individual weather stations. Objective: To evaluate the association between heat exposure and traumatic injuries in outdoor agricultural workers exposed to ambient heat and internal heat generated by physical activity using modeled ambient exposure data. Methods: A case-crossover study using time-stratified referent selection among 12,213 outdoor agricultural workers with new Washington State Fund workers’ compensation traumatic injury claims between 2000 and 2012 was conducted. Maximum daily Humidex exposures, derived from modeled meteorological data, were assigned to latitudes and longitudes of injury locations on injury and referent dates. Conditional logistic regression was used to estimate odds ratios of injury for a priori daily maximum Humidex categories. Results: The mean of within-stratum (injury day and corresponding referent days) standard deviations of daily maximum Humidex was 4.8. The traumatic injury odds ratio was 1.14 (95% confidence interval 1.06, 1.22), 1.15 (95% confidence interval 1.06, 1.25), and 1.10 (95% confidence interval 1.01, 1.20) for daily maximum Humidex of 25–29, 30–33, and ≥34, respectively, compared to

Suggested Citation

  • June T Spector & David K Bonauto & Lianne Sheppard & Tania Busch-Isaksen & Miriam Calkins & Darrin Adams & Max Lieblich & Richard A Fenske, 2016. "A Case-Crossover Study of Heat Exposure and Injury Risk in Outdoor Agricultural Workers," PLOS ONE, Public Library of Science, vol. 11(10), pages 1-16, October.
    • Handle: RePEc:plo:pone00:0164498
    DOI: 10.1371/journal.pone.0164498
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    Cited by:

    1. Junhyeong Lee & Wanhyung Lee & Won-Jun Choi & Seong-Kyu Kang & Seunghon Ham, 2019. "Association between Exposure to Extreme Temperature and Injury at the Workplace," IJERPH, MDPI, vol. 16(24), pages 1-10, December.
    2. Joseph P. Bachraty & JianBo Qiao & Elizabeth S. Powers & Lesley W. Vandermark & J. Luke Pryor & Riana R. Pryor, 2024. "Plateau in Core Temperature during Shorter but Not Longer Work/Rest Cycles in Heat," IJERPH, MDPI, vol. 21(3), pages 1-13, March.
    3. Qianyao Pan & Daniel A Sumner & Diane C Mitchell & Marc Schenker, 2021. "Compensation incentives and heat exposure affect farm worker effort," PLOS ONE, Public Library of Science, vol. 16(11), pages 1-23, November.
    4. Chiara Di Blasi & Alessandro Marinaccio & Claudio Gariazzo & Luca Taiano & Michela Bonafede & Antonio Leva & Marco Morabito & Paola Michelozzi & Francesca K. de’ Donato & on behalf of the Worklimate C, 2023. "Effects of Temperatures and Heatwaves on Occupational Injuries in the Agricultural Sector in Italy," IJERPH, MDPI, vol. 20(4), pages 1-14, February.
    5. Shinji Otani & Satomi Funaki Ishizu & Toshio Masumoto & Hiroki Amano & Youichi Kurozawa, 2021. "The Effect of Minimum and Maximum Air Temperatures in the Summer on Heat Stroke in Japan: A Time-Stratified Case-Crossover Study," IJERPH, MDPI, vol. 18(4), pages 1-12, February.
    6. Margaret C. Morrissey & Zachary Yukio Kerr & Gabrielle J. Brewer & Faton Tishukaj & Douglas J. Casa & Rebecca L. Stearns, 2023. "Analysis of Exertion-Related Injuries and Fatalities in Laborers in the United States," IJERPH, MDPI, vol. 20(3), pages 1-14, February.
    7. John C. Flunker & Christopher Zuidema & Jihoon Jung & Edward Kasner & Martin Cohen & Edmund Seto & Elena Austin & June T. Spector, 2022. "Potential Impacts of Different Occupational Outdoor Heat Exposure Thresholds among Washington State Crop and Construction Workers and Implications for Other Jurisdictions," IJERPH, MDPI, vol. 19(18), pages 1-24, September.

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