Table 5.
Stepwise multiple regression analysis explaining mothers’ depression from sleep quality, fatigue, and sleep cognitions
| Unstd B (SE) | t | Sig. | 95% CI for B | Cumulative R2 | |
|---|---|---|---|---|---|
| Baseline (N = 231) | |||||
| Constant | −11.63 (2.10) | −5.53 | <.001 | [−15.77, −7.48] | |
| MAF | .48 (.08) | 6.28 | <.001 | [.33, .63] | .31 |
| Sleep doubt | .44 (.13) | 3.49 | .001 | [.19, .69] | .42 |
| PSQI | .52 (.17) | 3.12 | .002 | [.19, .85] | .46 |
| Sleep anger | .69 (.13) | 5.52 | <.001 | [.44, .94] | .48 |
| Follow-up (N = 185) | |||||
| Constant | -.92 (1.26) | -.73 | .467 | [−3.41, 1.57] | |
| MAF | .25 (.06) | 4.27 | <.001 | [.14, .37] | .28 |
| PSQI | .76 (.18) | 4.26 | <.001 | [.41, 1.12] | .34 |
| Sleep doubt | .44 (.14) | 3.08 | .002 | [.16, .73] | .38 |
| Setting sleep limits | -.22 (.10) | −2.26 | .025 | [−.41, −.03] | .39 |
| Sleep anger | .31 (.15) | 2.10 | .037 | [.02, .59] | .41 |
Abbreviations: CI confidence interval, PSQI sleep quality, MAF fatigue
Baseline: R 2 = .48, adjusted R 2 = .47, F (4, 226) = 51.9, p < .001
Follow-up: R 2 = .41, adjusted R 2 = .39, F (5, 179) = 24.6, p < .001