Table 2. Associations between sleep duration and activities of daily living (ADL) disability among participants from the 2018 China Health and Retirement Longitudinal Study.
| ORa (95% CI) | P value | |
|---|---|---|
| Sleep duration per night, hours | ||
| Model 1b | ||
| ≤4 | 2.85 (2.48‐3.26) | <.001 |
| 5 | 1.51 (1.30‐1.76) | <.001 |
| 6 | 1.17 (1.01‐1.36) | .031 |
| 7 | [Reference] | -c |
| 8 | 1.08 (0.92‐1.25) | .342 |
| 9 | 1.41 (1.14‐1.75) | .002 |
| ≥10 | 2.03 (1.68‐2.46) | <.001 |
| Model 2d | ||
| ≤4 | 1.91 (1.60‐2.27) | <.001 |
| 5 | 1.33 (1.09‐1.62) | .006 |
| 6 | 1.11 (0.93‐1.34) | .246 |
| 7 | [Reference] | -c |
| 8 | 1.06 (0.88‐1.27) | .549 |
| 9 | 1.48 (1.13‐1.93) | <.001 |
| ≥10 | 1.88 (1.47‐2.41) | <.001 |
a
OR: odds ratio.
b
Model 1 was adjusted for age and sex.
c
Not applicable.
d
Model 2 was adjusted for age, sex, education, marital status, tobacco use, alcohol use, afternoon napping, residence, depression, chronic disease conditions, visual impairment, hearing impairment, life satisfaction, self-reported health status, and sample weights.