Association of sleep problems and sleep duration with self-rated health and grip strength among older adults in India and China: results from the study on global aging and adult health (SAGE).

Background: Sleep is an important predictor of health and quality of life. This study examined the association between sleep problems and sleep duration with self-rated poor health and grip strength among respondents aged 50 years and above in India and China.Methods: The data for this study were derived from the first wave of WHO’s Study on Global Aging and Adult Health (SAGE), a nationally representative panel survey conducted in six LMICs. Grip strength and poor self-rated health were the main outcome variables, while sleep problems and sleep duration were the main predictors. Multivariate logistic regression models and ordinary least squares regression models were used to understand the association between sleep problems and sleep duration with poor self-rated health and grip strength.Results: Sleep problems and sleep duration were strongly and significantly associated with poor self-rated health and grip strength in India and China. Compared to older adults with no sleep problems, the odds ratio for poor self-rated health among older adults with sleep problems was 4.86 (95% CI = 4.12, 5.73, p < 0.01) and 5.06 (95% CI = 3.93, 6.51, p < 0.01) higher for India and China, respectively. The likelihood of reporting poor health was higher among older adults who got ≤ 6 or 10+ h of sleep in both India and China. A negative and significant association was found between longer sleep duration and grip strength only in China (β = −1.19, 95% CI = −1.78, −0.60, p < 0.01).Conclusion: We observed a significant association between sleep problems and sleep duration with poor self-rated health and grip strength. Results suggested that sleep problems are important factors in determining the health of older adults in low- and middle-income countries. [ABSTRACT FROM AUTHOR]