日本一年级儿童中祖父母同住与体重变化之间的关联。

Association between grandparent coresidence and weight change among first-grade Japanese children.

作者信息

Morita Ayako, Ochi Manami, Isumi Aya, Fujiwara Takeo

机构信息

Department of Global Health Promotion, Tokyo Medical and Dental University, Tokyo, Japan.

Japan Support Center for Suicide Countermeasures, National Center of Neurology and Psychiatry, Tokyo, Japan.

出版信息

Pediatr Obes. 2019 Aug;14(8):e12524. doi: 10.1111/ijpo.12524. Epub 2019 Mar 29.

DOI:10.1111/ijpo.12524

PMID:30925033

Abstract

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.

摘要

背景

祖父母同住的情况日益普遍。然而，祖父母同住对学龄儿童体重变化的影响仍不明确。

目的

本研究旨在探讨祖父母同住与学龄儿童肥胖相关行为及体重指数（BMI）z评分变化之间的关联。

方法

东京足立区共有3422名一年级儿童的照料者参与了2016年和2017年的调查及健康检查，其祖父母同住状况未发生变化（回复率分别为80.1%和81.4%）。采用泊松回归和稳健误差方差分析来衡量祖父母同住与致肥胖饮食、身体活动及基于屏幕的久坐行为之间的关联，而BMI z评分的变化则通过线性回归并调整潜在协变量来确定。

结果

祖父母同住与不定期摄入零食的患病率增加相关（患病率比值：1.38，95%置信区间：1.19，1.61）；然而，在对一年级时的BMI z评分、家庭社会人口统计学特征和致肥胖行为进行调整后，与祖父母同住的儿童在二年级时的BMI z评分较低（系数：-0.048，95%置信区间：-0.094至-0.0013）。