TABLE 3.
Within‐person effect of insomnia symptoms on next‐month mental health, accounting for mental health at the time of the predictor
| Variable | β (95% CI) | df | t | p |
|---|---|---|---|---|
| Dependent variable: depressive symptoms tx + 1 | ||||
| Depressive Symptoms tx | 0.61 (0.56, 0.66) | 128.62 | 23.12 | <0.001 |
| Insomnia symptoms tx (within‐person) – women | −0.22 (−0.32, −0.12) | 61.35 | −4.15 | <0.001 |
| Insomnia symptoms tx (within‐person) – men | −0.13 (−0.25, −0.01) | 76.68 | −2.09 | 0.040 a |
| Dependent variable: anxiety symptoms tx + 1 | ||||
| Anxiety symptoms tx | 0.49 (0.44, 0.54) | 18.21 | 142.44 | <0.001 |
| Insomnia symptoms tx (within‐person) – women | −0.13 (−0.24, −0.02) | 84.85 | −2.41 | 0.018 |
| Insomnia symptoms tx (within‐person) – men | −0.19 (−0.31, −0.07) | 80.62 | −3.06 | 0.003 |
| Dependent variable: stress symptoms tx + 1 | ||||
| Stress symptoms tx | 0.17 (0.11, 0.23) | 5.46 | 864.99 | <0.001 |
| Insomnia symptoms tx (within‐person) – women | −0.07 (−0.16, 0.02) | 64.85 | −1.60 | 0.114 |
| Insomnia symptoms tx (within‐person) – men | −0.06 (−0.17, 0.05) | 312.79 | −1.10 | 0.270 |
| Dependent variable: mental wellbeing tx + 1 | ||||
| Mental wellbeing tx | 0.27 (0.21, 0.33) | 8.52 | 770.54 | <0.001 |
| Insomnia symptoms tx (within‐person) – women | 0.16 (0.06, 0.25) | 53.27 | 3.37 | 0.001 |
| Insomnia symptoms tx (within‐person) – men | −0.01 (−0.12, 0.10) | 83.98 | −0.17 | 0.867 |
Abbreviation: CI, confidence interval.
Note: Uncorrected, two‐sided p values are presented. We used the Benjamini‐Hochberg correction to adjust for multiple testing. Significant effects regarding the hypothesis, after the correction, are highlighted in bold.
N = 186 individuals (997 time points: 426 by men, 571 by women).
a
Effect was no longer significant after correcting for multiple testing.