NDLI: Mothers’ nonstandard work schedules and adolescent obesity: a population-based cross-sectional study in the Tokyo metropolitan area

Content Provider	Springer Nature : BioMed Central
Author	Kachi, Yuko Abe, Aya Eguchi, Hisashi Inoue, Akiomi Tsutsumi, Akizumi
Abstract	Background Many wage earners in developed countries have irregular shift patterns and work evenings, nights, and weekends. Some studies have demonstrated that the nonstandard work schedules of parents have adverse effects on their children’s weight, specifically leading to or worsening obesity. However, no such study has been conducted in adolescents of high school age. This study examined the association between mothers’ nonstandard work schedules and adolescent obesity. Methods A cross-sectional study of adolescents aged 16–17 years (n = 1743) used paired matches of self-administered questionnaires for adolescents and their mothers from Tokyo, Japan. Obesity was defined by International Obesity Task Force cut-offs. Nonstandard work schedules were defined as working early mornings, nights, overnights, or weekends. Chi-square tests were conducted to examine the association between the mothers’ work schedules and their adolescent children’s poor lifestyles, overall and stratified by income levels. Then, logistic regression analyses were conducted to examine the association between mothers’ work schedules and obesity of their adolescent children, overall and stratified by income levels. Results Overall, 6.5% of adolescents had obesity. The prevalence of obesity was higher among adolescents from low-middle income groups (8.2%) than that among those from high-income groups (5.9%). No clear patterns were found between mothers’ work schedules and adolescents’ poor lifestyles when stratified by income levels. Mothers’ nonstandard work schedules were significantly associated with adolescent obesity (odds ratio [OR]: 1.56, 95% confidence interval [CI]: 1.02–2.40). However, this association was not significant after adjustment for confounders. After stratification by income levels, mothers’ nonstandard work schedules significantly associated with their children’s obesity (OR: 2.93, 95% CI: 1.45–5.92) only in high-income groups. This association remained after adjustment of the adolescents’ lifestyles and their mothers’ working hours. Conclusions Our results suggest that mothers’ nonstandard work schedules have adverse effects on adolescent obesity only in high-income families. Low-middle income families experienced higher levels of adolescent obesity, regardless of the mothers’ work schedules. Policy makers should consider mothers’ work schedules as a factor in preventing adolescent obesity.
Related Links	https://bmcpublichealth.biomedcentral.com/counter/pdf/10.1186/s12889-021-10279-w.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	14712458
DOI	10.1186/s12889-021-10279-w
Journal	BMC Public Health
Issue Number	1
Volume Number	21
Language	English
Publisher	BioMed Central
Publisher Date	2021-01-28
Access Restriction	Open
Subject Keyword	Public Health Medicine Epidemiology Biostatistics Vaccine Environmental Health Adolescent Obesity Nonstandard work schedule Mother Tokyo Medicine/Public Health
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health
Journal Impact Factor	3.5/2023
5-Year Journal Impact Factor	3.9/2023

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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