Table 3. Significant Indirect Mediation Analysis of Neuroticism, PSQI, and CES-D.
| Model | β | p | |
|---|---|---|---|
| Hypothesized model | |||
| N → Sleep latency → Depressive symptoms | N → Sleep latency | 0.04 | .000 |
| Sleep latency → Depressive symptoms | 2.45 | .006 | |
| N → Depressive symptoms | 0.58 | .000 | |
| N → Sleep disturbance → Depressive symptoms | N → Sleep disturbance | 0.02 | .001 |
| Sleep disturbance → Depressive symptoms | 2.97 | .029 | |
| N → Depressive symptoms | 0.63 | .000 | |
| N → Sleep quality → Depressive symptoms | N → Sleep quality | 0.03 | .006 |
| Sleep quality → Depressive symptoms | 2.63 | .002 | |
| N → Depressive symptoms | 0.62 | .000 | |
| N → Global PSQI → Depressive symptoms | N → Global PSQI | 0.15 | .006 |
| Global PSQI → Depressive symptoms | 0.77 | .000 | |
| N → Depressive symptoms | 0.57 | .000 | |
| Alternative Model | |||
| N → Depressive symptoms → Sleep latency | N → Depressive symptoms | 0.69 | .000 |
| Depressive symptoms → Sleep latency | 0.03 | .006 | |
| N → Sleep latency | 0.03 | .022 | |
| N → Depressive symptoms → Sleep disturbance | N → Depressive symptoms | 0.69 | .000 |
| Depressive symptoms →→ Sleep disturbance | 0.02 | .029 | |
| N → Sleep disturbance | 0.01 | .225 | |
| N → Depressive symptoms → Sleep quality | N → Depressive symptoms | 0.69 | .000 |
| Depressive symptoms → Sleep quality | 0.03 | .002 | |
| N → Sleep quality | 0.003 | .758 | |
| N → Depressive symptoms → Global PSQI | N → Depressive symptoms | 0.69 | .000 |
| Depressive symptoms → Global PSQI | 0.15 | .000 | |
| N → Global PSQI | 0.05 | .250 |
Notes. Mediation analyses were conducted on PROCESS macro, adjusting for age, gender and medication. N = neuroticism; PSQI = Pittsburgh Sleep Quality Index; CES-D = Centre for Epidemiologic Studies-Depression Scale.