Occupational and behavioural factors in the explanation of social inequalities in premature and total mortality: A 12.5-year follow-up in the Lorhandicap study

INSERM, U1018, CESP Centre for Research in Epidemiology and Population Health, Epidemiology of Occupational and Social Determinants of Health Team, Villejuif, France.
European Journal of Epidemiology (Impact Factor: 5.34). 01/2011; 26(1):1-12. DOI: 10.1007/s10654-010-9506-9
Source: PubMed


The respective contribution of occupational and behavioural factors to social disparities in all-cause mortality has been studied very seldom. The objective of this study was to evaluate the role of occupational and behavioural factors in explaining social inequalities in premature and total mortality in the French working population. The study population consisted of a sample of 2,189 and 1,929 French working men and women, who responded to a self-administered questionnaire in mid-1996, and were followed up until the end of 2008. Mortality was derived from register-based information and linked to the baseline data. Socioeconomic status was measured using occupation. Occupational factors included biomechanical and physical exposures, temporary contract, psychological demands, and social support, and behavioural factors, smoking, alcohol abuse, and body mass index. Significant social differences were observed for premature and total mortality. Occupational factors reduced the hazard ratios of mortality for manual workers compared to managers/professionals by 72 and 41%, from 1.88 (95% CI: 1.17-3.01) to 1.25 (95% CI: 0.74-2.12) for premature mortality, and from 1.71 (95% CI: 1.18-2.47) to 1.42 (95% CI: 0.95-2.13) for total mortality. The biggest contributions were found for biomechanical and physical exposures, and job insecurity. The role of behavioural factors was very low. Occupational factors played a substantial role in explaining social disparities in mortality, especially for premature mortality and men. Improving working conditions amongst the lowest social groups may help to reduce social inequalities in mortality.

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    • "s SEP increases , whereas for women , job strain - attributable de - pression did not vary consistently by SEP [ LaMontagne et al . , 2008 ] . Work organization factors and job insecurity explained a larger proportion of socioeconomic inequal - ities in health among men than women in three studies [ Borrell et al . , 2004 ; Sekine et al . , 2009 ; Niedhammer et al . , 2011 ] . In one of these studies , material well - being at home and amount of household labor played a larger role in women ' s class differences in health [ Borrell et al . , 2004 ] Thus , further research is needed on the moderating role of gender in assessing the role of work organization hazards in socioeconomic inequalities in health ."
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