A descriptive analysis on body mass index distribution in adult twin pairs in China
10.3760/cma.j.cn112338-20200916-01164
- VernacularTitle:中国成年双生子体质指数的分布特征
- Author:
Hexiang PENG
1
;
Wenjing GAO
;
Jun LYU
;
Canqing YU
;
Tao HUANG
;
Dianjianyi SUN
;
Chunxiao LIAO
;
Zengchang PANG
;
Min YU
;
Hua WANG
;
Xianping WU
;
Zhong DONG
;
Fan WU
;
Guohong JIANG
;
Xiaojie WANG
;
Yu LIU
;
Jian DENG
;
Lin LU
;
Weihua CAO
;
Liming LI
Author Information
1. 北京大学公共卫生学院流行病与统计学系 100191
- Keywords:
Body mass index;
Twins;
Obesity and overweight;
Population distributions
- From:
Chinese Journal of Epidemiology
2021;42(7):1160-1166
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To describe the differences in body mass index (BMI) distribution in adult twins registered in Chinese National Twin Registry (CNTR), and provide evidence for the risk factor analysis and prevention and control of overweight or obesity.Methods:A total of 32 725 twin pairs aged 18 years and above who completed the questionnaire survey during 2010-2018 and had complete registered information in CNTR and normal body weight and length were included in the analysis on the population and region specific distributions of BMI of twin pairs and the difference in BMI in twin pairs.Results:The twin pairs included in the analysis were aged (34.6±12.4) years, the twin pairs of same gender accounted for 79.7%. The average BMI was 22.5 kg/m 2. The overall prevalence of obesity and overweight was 4.9% and 23.7%, respectively. Participants who were men, 50-59 years old, married, had lower education level, and lived in northern China had higher overweight rate and obesity rate ( P<0.001). The difference in overweight or obesity prevalence between monozygotic (MZ) twin pars and dizygotic (DZ) twin pairs was not significant, but firstborn twin pairs had slightly higher rates of overweight and obesity than later-born twin pairs ( P<0.05). The analysis in same gender-twin pairs indicated that the difference in BMI was associated with age (trend test: P<0.001), and the difference was more obvious in DZ twin pair in MZ pair and this difference increased with age. The concordant rate of BMI was higher in MZ twin pairs than DZ twin pairs ( P<0.05). Conclusion:The distribution of BMI of twin pairs varied with population and region and BMI varied with age due to its genetic nature.
