Table 2.
Risk of all-cause mortality among the elderly adults with different sleep duration, a cohort study in China, 2005-2019
| Population | Groups | Cases/Person-years | HR (95% CI) | P for interaction | ||
|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 3 | ||||
| Whole population | Short (≤ 6h) | 1340/9518 | 1.08 (1.01-1.14) | 1.07 (1.00-1.13) | 1.02 (0.96-1.09) | |
| Moderate (7-8h) | 4578/35942 | Ref. | Ref. | Ref. | ||
| Long (> 8h) | 4806/22567 | 1.20 (1.15-1.25) | 1.17 (1.12-1.22) | 1.13 (1.09-1.18) | ||
| Male | Short (≤ 6h) | 485/3642 | 1.13 (1.02-1.25) | 1.09 (0.99-1.21) | 1.02 (0.92-1.13) | |
| Moderate (7-8h) | 1867/16294 | Ref. | Ref. | Ref. | 0.0300 | |
| Long (> 8h) | 1755/9759 | 1.14 (1.07-1.22) | 1.11 (1.04-1.19) | 1.08 (1.01-1.15) | ||
| Female | Short (≤ 6h) | 855/5876 | 1.05 (0.97-1.14) | 1.06 (0.98-1.14) | 1.02 (0.94-1.10) | |
| Moderate (7-8h) | 2711/19648 | Ref. | Ref. | Ref. | ||
| Long (> 8h) | 3051/12808 | 1.24 (1.18-1.31) | 1.20 (1.14-1.26) | 1.17 (1.11-1.23) | ||
| Age at baseline, <80 years | Short (≤ 6h) | 132/3774 | 1.13 (0.93-1.37) | 1.07 (0.88-1.30) | 1.04 (0.85-1.26) | |
| Moderate (7-8h) | 452/15585 | Ref. | Ref. | Ref. | 0.0034 | |
| Long (> 8h) | 221/5518 | 1.29 (1.10-1.52) | 1.25 (1.06-1.47) | 1.20 (1.02-1.41) | ||
| Age at baseline, 80-89 years | Short (≤ 6h) | 371/2867 | 1.02 (0.90-1.14) | 1.01 (0.90-1.13) | 0.95 (0.85-1.07) | |
| Moderate (7-8h) | 1155/9203 | Ref. | Ref. | Ref. | ||
| Long (> 8h) | 949/6020 | 1.17 (1.07-1.28) | 1.12 (1.03-1.23) | 1.10 (1.00-1.20) | ||
| Age at baseline, 90-99 years | Short (≤ 6h) | 458/1827 | 1.11 (1.00-1.23) | 1.10 (0.99-1.22) | 1.04 (0.94-1.16) | |
| Moderate (7-8h) | 1631/7085 | Ref. | Ref. | Ref. | ||
| Long (> 8h) | 1775/6265 | 1.21 (1.13-1.30) | 1.17 (1.10-1.26) | 1.12 (1.05-1.20) | ||
| Age at baseline, ≥100 years | Short (≤ 6h) | 379/1049 | 1.10 (0.98-1.23) | 1.11 (0.98-1.24) | 1.06 (0.95-1.20) | |
| Moderate (7-8h) | 1340/4069 | Ref. | Ref. | Ref. | ||
| Long (> 8h) | 1861/4763 | 1.19 (1.11-1.28) | 1.16 (1.08-1.25) | 1.14 (1.06-1.23) | ||
Model 1: adjusted for age and sex; Model 2: adjusted for age, sex, enrollment year, province, residence, education, ethic, marriage status, occupation, access to medical service, smoking status, drinking status, and exercise status; Model 3: model 2 + further adjusted for ADL score, physical performance score, MMSE score, food diversity score, social activity score, and chronic disease score.
Abbreviations: CIs confident intervals, HR hazard ratio