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Journal Articles American Journal of Epidemiology Year : 2010

Why does lung function predict mortality? Results from the Whitehall II Cohort Study.

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Abstract

The authors examined the extent to which socioeconomic position, behavior-related factors, cardiovascular risk factors, inflammatory markers, and chronic diseases explain the association between poor lung function and mortality in 4,817 participants (68.9% men) from the Whitehall II Study aged 60.8 years (standard deviation, 5.9), on average. Forced expiratory volume in 1 second (FEV(1)) was used to measure lung function in 2002-2004. A total of 139 participants died during a mean follow-up period of 6.4 years (standard deviation, 0.8). In a model adjusted for age and sex, being in the lowest tertile of FEV(1)/height(2) was associated with a 1.92-fold (95% confidence interval: 1.35, 2.73) increased risk of mortality compared with being in the top 2 tertiles. Once age, sex, and smoking history were taken into account, the most important explanatory factors for this association were inflammatory markers (21.3% reduction in the FEV(1)/height(2)-mortality association), coronary heart disease, stroke, and diabetes (11.7% reduction), and alcohol consumption, diet, physical activity, and body mass index (9.8% reduction). The contribution of socioeconomic position and cardiovascular risk factors was small (≤ 3.5% reduction). Taken together, these factors explained 32.5% of the association. Multiple pathways link lung function to mortality; these results show inflammatory markers to be particularly important.
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Dates and versions

inserm-00532639 , version 1 (20-10-2011)

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Séverine Sabia, Martin J. Shipley, Alexis Elbaz, Michael G. Marmot, Mika Kivimaki, et al.. Why does lung function predict mortality? Results from the Whitehall II Cohort Study.. American Journal of Epidemiology, 2010, 172 (12), pp.1415-23. ⟨10.1093/aje/kwq294⟩. ⟨inserm-00532639⟩
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