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Association between grandparent coresidence and weight change among first‐grade Japanese children
Author(s) -
Morita Ayako,
Ochi Manami,
Isumi Aya,
Fujiwara Takeo
Publication year - 2019
Publication title -
pediatric obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.226
H-Index - 69
eISSN - 2047-6310
pISSN - 2047-6302
DOI - 10.1111/ijpo.12524
Subject(s) - medicine , grandparent , association (psychology) , demography , gerontology , developmental psychology , psychology , sociology , philosophy , epistemology
Summary Background The prevalence of grandparent coresidence is increasing. However, the impact of grandparent coresidence on weight change among school‐age children remains unclear. Objectives The objective of the study is to examine the association between grandparent coresidence and obesity‐related behaviours and change in body mass index (BMI) z scores among school‐age children. Methods In total, 3422 caregivers of first‐grade children in Adachi City, Tokyo, participated in surveys and health checkups in 2016 and 2017 with no change in their grandparent coresidence status (response rate: 80.1% and 81.4%, respectively). Association between grandparent coresidence and obesogenic dietary, physical activity, and screen‐based sedentary behaviours was measured using Poisson regression with robust error variance analysis, while change in BMI z scores was determined by linear regression and adjusting for potential covariates. Results Grandparent coresidence was associated with increased prevalence rate (PR) of irregular snack foods intake (PR: 1.38, 95% confidential interval (CI): 1.19, 1.61); however, children who live with grandparents showed a lower BMI z scores in the second grade (coefficient: −0.048, 95% CI: −0.094 to −0.0013) after adjustment for BMI z scores in the first grade, family sociodemographics, and obesogenic behaviours. Conclusion Grandparent coresidence is associated with lower BMI z scores among early primary school‐age Japanese children living in urban areas.