Sleep Duration and Functional Disability Among Chinese Older Adults: Cross-Sectional Study

Minjing Luo   ^{1, 2, 3} , PhD ;   Yue Dong   ⁴ , MD ;   Bingbing Fan   ⁴ , MD ;   Xinyue Zhang   ³ , MD ;   Hao Liu   ^{1, 2, 3} , PhD ;   Changhao Liang   ^{1, 2, 3} , PhD ;   Hongguo Rong   ^{1, 2, 3, 5 *} , PhD ;   Yutong Fei   ^{1, 2, 3, 5 *} , PhD

¹ Center for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China

² Beijing GRADE Centre, Beijing, China

³ School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China

⁴ Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China

⁵ Institute for Excellence in Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China

*these authors contributed equally