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Correlation analysis between SAS, GDS and PQSI (age and sex were controlled).
| Variables | Mean (SD) | SAS | GDS | PQSI |
|---|---|---|---|---|
| SAS | 31.84 ± 6.74 | 1 | 0.452** | 0.364** |
| GDS | 2.84 ± 2.93 | 0.452** | 1 | 0.278** |
| PQSI | 5.21 ± 3.79 | 0.364** | 0.278** | 1 |
Abbreviation: SAS, self-rating Anxiety Scale; GDS, Geriatric Depression Scale; PQSI, Pittsburgh Sleep Quality Index, *means p < 0.05; **means p < 0.001.
