Healthy Ageing
Current status of body mass index and related influencing factors in the elderly aged 65 years and older in 8 longevity areas in China
Yingjian Zhang, Yuebin Lyu, Jinhui Zhou, Feng Zhao, Yingli Qu, Ling Liu, Yingchun Liu, Jiaonan Wang, Zhaojin Cao, Shiman Ruan, Xiaoming Shi
Published 2020-01-10
Cite as Chin J Epidemiol, 2020, 41(1): 25-30. DOI: 10.3760/cma.j.issn.0254-6450.2020.01.006
Abstract
ObjectiveTo understand the current status of BMI of the elderly and related factors in longevity areas in China, and provide scientific evidence for the control of BMI level in elderly population.
MethodsData used in this study were obtained from Healthy Aging and Biomarkers Cohort Study, a sub-cohort of the Chinese Longitudinal Healthy Longevity Survey. A total of 2 825 elderly in 8 longevity areas in China were surveyed and measured in 2017. The BMI levels of 2 217 elderly aged 65 years and older were calculated and in follow up. The ordered classification logistic regression model was used to analyze the influencd factors for the BMI in the elderly.
ResultsThe BMI of the elderly in 8 longevity areas in China was (22.36±3.87) kg/m2, and it was (22.76±3.58) kg/m2 for males and (21.75±3.98) kg/m2 for females. The BMI levels were normal in 1 165 elderly persons. The prevalence of underweight, overweight and obesity were 15.8%, 24.0% and 7.7%, respectively. Multivariate analysis showed that the main factors affecting the BMI of people under 100- years old were age (65-: OR=2.78, 95%CI: 1.87-4.15; 80-: OR=1.47, 95%CI: 1.00-2.17), smoking status (OR=0.46, 95%CI: 0.32-0.66), annual household income (<30 000 Yuan: OR=1.26, 95%CI: 1.07-1.47; 30 000-70 000 Yuan: OR=1.52, 95%CI: 1.12-1.86), and frequency of tea intake(OR=1.36, 95%CI: 1.01-1.71), while the factor in people aged ≥100 years was gender (OR=3.68, 95%CI: 1.32-10.36).
ConclusionsThe prevalence of underweight, overweight and obesity were high in the elderly from longevity areas in China. It is necessary to pay attention to the trend of overweight and obesity due to smoking, higher annual household income and regular tea drinking in the elderly men.
Key words:
Body mass index; Longevity; Elderly
Contributor Information
Yingjian Zhang
Jinan Municipal Center for Disease Control and Prevention, Jinan 250021, China
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Yuebin Lyu
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Jinhui Zhou
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Feng Zhao
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Yingli Qu
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Ling Liu
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Yingchun Liu
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Jiaonan Wang
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Zhaojin Cao
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
Shiman Ruan
Jinan Municipal Center for Disease Control and Prevention, Jinan 250021, China
Xiaoming Shi
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
