A1 Refereed original research article in a scientific journal
Long working hours and change in body weight: analysis of individual-participant data from 19 cohort studies
Authors: Marianna Virtanen, Markus Jokela, Tea Lallukka, Linda Magnusson Hanson, Jaana Pentti, Solja T. Nyberg, Lars Alfredsson, G. David Batty, Annalisa Casini, Els Clays, Dirk DeBacquer, Jenni Ervasti, Eleonor Fransson, Jaana I. Halonen, Jenny Head, France Kittel, Anders Knutsson, Constanze Leineweber, Maria Nordin, Tuula Oksanen, Olli Pietiläinen, Ossi Rahkonen, Paula Salo, Archana Singh-Manoux, Sari Stenholm, Sakari B. Suominen, Töres Theorell, Jussi Vahtera, Peter Westerholm, Hugo Westerlund, Mika Kivimäki
Publisher: Springer Nature
Publication year: 2019
Journal: International Journal of Obesity
Journal name in source: International journal of obesity (2005)
Journal acronym: Int J Obes (Lond)
ISSN: 0307-0565
eISSN: 1476-5497
DOI: https://doi.org/10.1038/s41366-019-0480-3
Web address : https://www.nature.com/articles/s41366-019-0480-3
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/45169550
Of the 61,143 participants without overweight/obesity at baseline, 20.2% had overweight/obesity at follow-up. Compared with standard weekly working hours, the age-, sex- and socioeconomic status-adjusted relative risk (RR) of overweight/obesity was 0.95 (95% CI 0.90-1.00) for part-time work, 1.07 (1.02-1.12) for 41-48 weekly working hours, 1.09 (1.03-1.16) for 49-54 h and 1.17 (1.08-1.27) for long working hours (P for trend <0.0001). The findings were similar after multivariable adjustment and in subgroup analyses. Long working hours were associated with an excess risk of shift from normal weight to overweight rather than from overweight to obesity. Long working hours were not associated with weight loss among participants with obesity.\nThis analysis of large individual-participant data suggests a small excess risk of overweight among the healthy-weight people who work long hours.\nTo examine the relation between long working hours and change in body mass index (BMI).\n) among participants with overweight at baseline, and (4) weight loss among participants with obesity at baseline.\nRESULTS\nCONCLUSIONS\nOBJECTIVE\nMETHODS
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