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Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies.
J Intern Med 2012; 272(1):65-73JI

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.

Authors+Show Affiliations

Finnish Institute of Occupational Health, Helsinki, Finland.solja.nyberg@ttl.fiNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Meta-Analysis
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22077620

Citation

Nyberg, S T., et al. "Job Strain in Relation to Body Mass Index: Pooled Analysis of 160 000 Adults From 13 Cohort Studies." Journal of Internal Medicine, vol. 272, no. 1, 2012, pp. 65-73.
Nyberg ST, Heikkilä K, Fransson EI, et al. Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies. J Intern Med. 2012;272(1):65-73.
Nyberg, S. T., Heikkilä, K., Fransson, E. I., Alfredsson, L., De Bacquer, D., Bjorner, J. B., ... Kivimäki, M. (2012). Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies. Journal of Internal Medicine, 272(1), pp. 65-73. doi:10.1111/j.1365-2796.2011.02482.x.
Nyberg ST, et al. Job Strain in Relation to Body Mass Index: Pooled Analysis of 160 000 Adults From 13 Cohort Studies. J Intern Med. 2012;272(1):65-73. PubMed PMID: 22077620.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Job strain in relation to body mass index: pooled analysis of 160 000 adults from 13 cohort studies. AU - Nyberg,S T, AU - Heikkilä,K, AU - Fransson,E I, AU - Alfredsson,L, AU - De Bacquer,D, AU - Bjorner,J B, AU - Bonenfant,S, AU - Borritz,M, AU - Burr,H, AU - Casini,A, AU - Clays,E, AU - Dragano,N, AU - Erbel,R, AU - Geuskens,G A, AU - Goldberg,M, AU - Hooftman,W E, AU - Houtman,I L, AU - Jöckel,K-H, AU - Kittel,F, AU - Knutsson,A, AU - Koskenvuo,M, AU - Leineweber,C, AU - Lunau,T, AU - Madsen,I E H, AU - Hanson,L L Magnusson, AU - Marmot,M G, AU - Nielsen,M L, AU - Nordin,M, AU - Oksanen,T, AU - Pentti,J, AU - Rugulies,R, AU - Siegrist,J, AU - Suominen,S, AU - Vahtera,J, AU - Virtanen,M, AU - Westerholm,P, AU - Westerlund,H, AU - Zins,M, AU - Ferrie,J E, AU - Theorell,T, AU - Steptoe,A, AU - Hamer,M, AU - Singh-Manoux,A, AU - Batty,G D, AU - Kivimäki,M, AU - ,, Y1 - 2011/12/05/ PY - 2011/11/15/entrez PY - 2011/11/15/pubmed PY - 2012/8/25/medline SP - 65 EP - 73 JF - Journal of internal medicine JO - J. Intern. Med. VL - 272 IS - 1 N2 - 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. SN - 1365-2796 UR - https://www.unboundmedicine.com/medline/citation/22077620/Job_strain_in_relation_to_body_mass_index:_pooled_analysis_of_160_000_adults_from_13_cohort_studies_ L2 - https://doi.org/10.1111/j.1365-2796.2011.02482.x DB - PRIME DP - Unbound Medicine ER -