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Descriptive analysis and bivariate correlations among variables.
| Variables | Mean | SD | Sleep quality | ADL | Depression | Loneliness | HRQOL |
|---|---|---|---|---|---|---|---|
| Sleep quality | 6.51 | 3.62 | 1 | ||||
| ADL | 95.46 | 10.74 | − 0.135** | 1 | |||
| Depression | 4.57 | 4.71 | 0.520** | − 0.305** | 1 | ||
| Loneliness | 3.83 | 1.56 | 0.219** | − 0.120** | 0.398** | 1 | |
| HRQOL | 0.95 | 0.09 | − 0.216** | 0.849** | − 0.432** | − 0.257** | 1 |
N = 1587; ADL Activities of daily living, HRQOL Health-related quality of life. **P < 0.01.
