The role of occupational activities and work environment in occupational injury and interplay of personal factors in various age groups among Indian and French coalminers
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Department of Mining Engineering, Indian Institute of Technology, Kharagpur, India
Department of Mining Engineering, Indian Institute of Technology, Kharagpur, 721302, India
Department of Mining Engineering, Indian School of Mines, Dhanbad, India
Research Unit INSIDE, University of Luxembourg, Walferdange, Luxembourg
U669, INSERM, Paris, France
UMR-S0669, Univ Paris-Sud & Univ Paris Descartes, Paris, France
Int J Occup Med Environ Health. 2013;26(6):910-29
Objective: The role of occupational hazards in occupational injury may be mediated by individual factors across various age groups. This study assessed the role of occupational hazards as well as contribution of individual factors to injuries among Indian and French coalminers. Material and Methods: We conducted a case-control study on 245 injured workers and on 330 controls without any injuries from Indian coal mines using face-to-face interviews, and a retrospective study on 516 French coalminers using a self-administered questionnaire including potential occupational and personal factors. Data were analyzed using logistic models. Results: The annual rate of injuries was 5.5% for Indian coalminers and 14.9% for the French ones. Logistic model including all occupational factors showed that major injury causes were: hand-tools, material handling, machines, and environment/work-geological/strata conditions among Indian miners (adjusted oddsratios 2.01 to 3.30) and biomechanical exposure score among French miners (adjusted odds-ratio 3.01 for score the 1-4, 3.47 for the score 5-7, and 7.26 for score ≥ 8, vs. score 0). Personal factors among Indian and French coalminers reduced/exacerbated the roles of various occupational hazards to a different extent depending on workers' age. Conclusion: We conclude that injury roles of occupational hazards were reduced or exacerbated by personal factors depending on workers' age in both populations. This knowledge is useful when designing prevention which should definitely consider workers' age.
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