Influence of visual impairment on mortality in the elderly aged 65 years and older in 8 longevity areas in China
10.3760/cma.j.issn.0254-6450.2020.01.007
- VernacularTitle: 中国8个长寿地区65岁及以上老年人视力不良对死亡风险的影响
- Author:
Miaochun CAI
1
;
Feng ZHAO
2
;
Dong SHEN
1
;
Yuebin LYU
2
;
Xiru ZHANG
1
;
Jinhui ZHOU
2
;
Yingli QU
2
;
Ling LIU
2
;
Yingchun LIU
2
;
Jiaonan WANG
2
;
Zhaojin CAO
2
;
Xianbo WU
1
;
Xiaoming SHI
2
;
Chen MAO
1
Author Information
1. Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
2. National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
- Publication Type:Journal Article
- Keywords:
Visual impairment;
Mortality;
Elderly
- From:Chinese Journal of Epidemiology
2020;41(1):31-35
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To understand the relationship between visual impairment and risk of all-cause mortality in the elderly aged 65 years and older in 8 longevity areas in China.
Methods:The data of the elderly aged 65 years and older in the project in 2012 were obtained from Healthy Aging and Biomarkers Cohort Study, a sub-cohort of the Chinese Longitudinal Healthy Longevity Survey, including physical measurement and survival status, and a follow-up for survival outcomes were conducted in 2014 and 2017 respectively. Cox proportional hazard regression model was used to analyze the influence of visual impairment on mortality. Gender and age specific analysis was conducted.
Results:A total of 1 736 elderly adults were included. A total of 943 deaths occurred during the 5-year follow-up period with a 5-year mortality rate of 54.3%. The 5-year mortality rate was 76.7% in the group with visual impairment, and 47.6% in the group without visual impairment (P<0.001). After adjusting for demographic information, life style and some disease factors, the risk of 5-year mortality in the group with visual impairment group was 1.30 times higher than that in the group without visual impairment (HR=1.30, 95%CI: 1.09-1.55). In the females, the risk for mortality in the group with visual impairment was 1.48 times higher than that in the group without visual impairment (HR=1.48, 95%CI:1.20-1.84). However, vision status was not associated with the risk for mortality in males (HR=1.02, 95%CI: 0.72-1.43). The risk for mortality in the group with visual impairment was 1.39 times higher than that in the group without visual impairment in the elderly aged over 90 years (HR=1.39, 95%CI: 1.13-1.70). Vision status was not associated with mortality risk in the elderly aged 65-79 years and 80-89 years (HR=1.37, 95%CI: 0.61-3.07; HR=0.95, 95%CI: 0.61-1.48).
Conclusion:In the elderly people in China, visual impairment is a risk factor for mortality.
