Table 4.
Hierarchical regression analysis with sleep quality as dependent variable.
| PSQI overall score |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | Step 1 |
Step 2 |
Step 3 |
|||||||||
| B | CI 95% | r | P-value | B | CI 95% | r | P-value | B | CI 95% | r | P-value | |
| Family history of suicide attemps | −0.145 | (−3.795; −0.304) | −0.151 | 0.022 | −0.163 | (−3.895; −0.725) | −0.189 | 0.004 | −0.110 | (−3.038; −0.057) | −0.137 | 0.042 |
| Personal history of medical condition(s) | −0.112 | (−2.021; 0.102) | −0.117 | 0.076 | −0.087 | (−1.703; 0.209) | −0.103 | 0.125 | −0.072 | (−1.514; 0.275) | −0.092 | 0.174 |
| Personal history of psychiatric disorder(s) | −0.123 | (−1.875; 0.023) | −0.126 | 0.056 | −0.036 | (−1.138; 0.594) | −0.042 | 0.536 | 0.064 | (−0.360; 1.318) | 0.076 | 0.262 |
| Tobacco use | −0.237 | (−4.393; −1.356) | −0.240 | <0.0001 | −0.151 | (−3.228; −0.434) | −0.171 | 0.010 | −0.109 | (−2.645; −0.006) | −0.133 | 0.049 |
| Duration of COVID−19 news tracking per day | – | – | – | – | 0.100 | (−0.050; 0.925) | 0.118 | 0.078 | 0.049 | (−0.244; 0.677) | 0.063 | 0.356 |
| Perception of home confinement | – | – | – | – | 0.355 | (1.681; 3.506) | 0.352 | <0.0001 | 0.158 | (0.198; 2.111) | 0.159 | 0.018 |
| Perceived advantages of home confinement | – | – | – | – | 0.070 | (−0.713; 2.992) | 0.081 | 0.227 | −0.012 | (−1.961; 1.579) | −0.014 | 0.832 |
| Consumption of foods rich in calories, fat or sugar during home confinement | – | – | – | – | 0.013 | (−0.375; 0.462) | 0.014 | 0.838 | 0.012 | (−0.347; 0.423) | 0.013 | 0.846 |
| Internet and smartphone use during home confinement | – | – | – | – | 0.101 | (−0.079; 0.769) | 0.107 | 0.110 | 0.098 | (−0.059; 0.726) | 0.113 | 0.095 |
| Physical activity during home confinement | – | – | – | – | 0.080 | (−0.125; 0.736) | 0.093 | 0.163 | 0.108 | (0.010; 0.814) | 0.136 | 0.045 |
| DASS-21 Depression score | – | – | – | – | – | – | – | – | 0.148 | (−0.016; 0.107) | 0.098 | 0.146 |
| DASS-21 Anxiety score | – | – | – | – | – | – | – | – | 0.273 | (0.040; 0.165) | 0.214 | 0.001 |
| DASS-21 Stress score | – | – | – | – | – | – | – | – | −0.112 | (−0.113; 0.032) | −0.074 | 0.272 |
| Hopelessness score (BHS) | – | – | – | – | – | – | – | – | 0.211 | (0.058; 0.255) | 0.208 | 0.002 |
B: standardized beta coefficient; CI, confidence interval; r: Spearman's rank correlation coefficient; p: statistical significance; PSQI: Pittsburgh Sleep Quality Index; DASS-21, Depression, Anxiety and Stress score - 21 items; BHS: Beck Hopelessness Scale.