Table 3.
Hierarchical multiple regression models (final models) with physical (SF-12 PCS) and mental (SF-12 MCS) health-related quality of life as dependent variables.
| SF-12 PCS | SF-12 MCS | |||||
|---|---|---|---|---|---|---|
| Coefficient (SE) | t | Beta | Coefficient (SE) | t | Beta | |
| Sex | −1.17 (0.85) | −1.38 | −0.06 | 1.26 (1.02) | 1.22 | 0.05 |
| Age | −0.18 (0.13) | −1.42 | −0.07 | −0.04 (0.15) | −0.25 | −0.01 |
| DASS-21 anxiety | −0.50 (0.10) | −5.20 *** | −0.34 | 0.16 (0.12) | 1.39 | 0.08 |
| DASS-21 depression | −0.08 (0.09) | −0.94 | −0.06 | −0.72 (0.10) | −6.96 *** | −0.39 |
| DASS-21 stress | 0.22 (0.11) | 2.07 * | 0.14 | −0.53 (0.13) | −4.14 *** | −0.24 |
| PSQI perceived sleep quality | −0.83 (0.62) | −1.33 | −0.08 | −2.09 (0.75) | −2.79 ** | −0.14 |
| PSQI sleep latency | −0.01 (0.38) | −0.03 | −0.00 | 0.64 (0.46) | 1.38 | 0.07 |
| PSQI sleep duration | 0.38 (0.59) | 0.64 | 0.03 | 0.77 (0.71) | 1.07 | 0.05 |
| PSQI habitual sleep efficiency | −0.14 (0.47) | −0.29 | −0.02 | −1.11 (0.57) | −1.94 | −0.09 |
| PSQI sleep disturbances | −10.6 (0.73) | −1.47 | −0.08 | −0.08 (0.89) | −0.09 | −0.01 |
| PSQI sleep medication use | −0.49 (0.40) | −1.21 | −0.06 | 0.37 (0.49) | 0.75 | 0.03 |
| PSQI daytime dysfunction | −1.24 (0.57) | −2.17 * | −0.11 | −1.53 (0.69) | −2.2 * | −0.10 |
| Summary statistics | ||||||
| Model F | 8.41 *** | 22.14 *** | ||||
| R2 | 0.20 | 0.40 | ||||
| Adjusted R2 | 0.18 | 0.39 | ||||
Note. PSQI: Pittsburgh Sleep Quality Index; DASS-21: 21-item Depression Anxiety Stress Scale; SF-12 PCS: Short Form-12 Physical Component Summary; SF-12 MCS: Short Form-12 Mental Component Summary; Beta: standardized regression coefficient. * p < 0.05; ** p < 0.01; *** p < 0.001.