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Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies.

Abstract：

BACKGROUND:Evidence of an association between job strain and obesity is inconsistent, mostly limited to small-scale studies, and does not distinguish between categories of underweight or obesity subclasses. OBJECTIVES:To examine the association between job strain and body mass index (BMI) in a large adult population. METHODS:We performed a pooled cross-sectional analysis based on individual-level data from 13 European studies resulting in a total of 161 746 participants (49% men, mean age, 43.7 years). Longitudinal analysis with a median follow-up of 4 years was possible for four cohort studies (n = 42 222). RESULTS:A total of 86 429 participants were of normal weight (BMI 18.5-24.9 kg m(-2) ), 2149 were underweight (BMI < 18.5 kg m(-2) ), 56 572 overweight (BMI 25.0-29.9 kg m(-2) ) and 13 523 class I (BMI 30-34.9 kg m(-2) ) and 3073 classes II/III (BMI ≥ 35 kg m(-2) ) obese. In addition, 27 010 (17%) participants reported job strain. In cross-sectional analyses, we found increased odds of job strain amongst underweight [odds ratio 1.12, 95% confidence interval (CI) 1.00-1.25], obese class I (odds ratio 1.07, 95% CI 1.02-1.12) and obese classes II/III participants (odds ratio 1.14, 95% CI 1.01-1.28) as compared with participants of normal weight. In longitudinal analysis, both weight gain and weight loss were related to the onset of job strain during follow-up. CONCLUSIONS:In an analysis of European data, we found both weight gain and weight loss to be associated with the onset of job strain, consistent with a 'U'-shaped cross-sectional association between job strain and BMI. These associations were relatively modest; therefore, it is unlikely that intervention to reduce job strain would be effective in combating obesity at a population level.

journal_name

J Intern Med

journal_title

Journal of internal medicine

authors

Nyberg ST,Heikkilä K,Fransson EI,Alfredsson L,De Bacquer D,Bjorner JB,Bonenfant S,Borritz M,Burr H,Casini A,Clays E,Dragano N,Erbel R,Geuskens GA,Goldberg M,Hooftman WE,Houtman IL,Jöckel KH,Kittel F,Knutsson A,Kos

doi

10.1111/j.1365-2796.2011.02482.x

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

65-73

issue

eissn

0954-6820

issn

1365-2796

journal_volume

272

pub_type

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Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies.