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Poster-discussion: Psychosocial working conditions
Work stress, tobacco smoking and alcohol intake: a collaborative meta-analysis of individual-participant data from 15 European studies
  1. Katriina Heikkilä
  1. IPD-Work Consortium FIOH, Helsinki, Finland

Abstract

Objectives In order to clarify the inconsistent evidence, we conducted individual-participant meta-analyses of the association of smoking and alcohol intake with work stress.

Methods We analysed cross-sectional data from 15 (166 130 participants) and longitudinal data from four (48 905 participants) European studies. Smoking, alcohol intake and work stress (operationalised as job strain) were participant-reported. Smoking was categorised into never, ex- and current, and alcohol intake into none, moderate (women: 1-14, men: 1-21 drinks/week), intermediate (women: 15–20, men: 22–27 drinks/week) and heavy (women: ≥21, men: ≥28 drinks/week). Cross-sectional associations were modelled using logistic regression and longitudinal associations using mixed effects logistic regression. The results were pooled in random effects meta-analyses.

Results Current smokers had higher odds of job strain than never-smokers (OR: 1.11, 95% CI: 1.03 to 1.18). Current smokers with job strain smoked more than those without job strain. Compared to moderate drinkers, non-drinkers had higher (OR: 1.13, 95% CI: 1.08 to 1.17) and intermediate drinkers lower odds (OR: 0.92, 95% CI: 0.86 to 0.99) of job strain. Ex-smoking (OR: 1.00, 95% CI: 0.93 to 1.06) and heavy alcohol intake (OR: 1.12, 95% CI: 0.99 to 1.27) were not associated with job strain. Neither smoking nor alcohol intake was longitudinally associated with job strain.

Conclusions Our meta-analyses show that current smokers and non-drinkers are more likely and intermediate drinkers less likely to report work stress than never-smokers and moderate drinkers. Our findings suggest that smoking and drinking habits are associated with work stress but the association is probably not causal.

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