Table 2.
Predictors of the PSQI sum score and the component scale models.
| Target PSQI Scale (Dependent Variable) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Predictors | Sum Score | Sleep Latency | Daytime Dysfunction | Sleep Quality | Sleep Disturbance | Sleep Duration | Sleep Efficiency | Sleep Medication |
| Intercept | 0.61 (0.831) | 0.54 (0.27) | −0.58 (0.408) | 0.08 (0.898) | −0.01 (0.984) | 5.45 (<0.001) | 4.60 (<0.001) | 0.49 (0.566) |
| Sex (Difference to Male) | −1.22 (0.006) | −1.5 (0.04) | −0.25 (0.019) | −0.20 (0.027) | −0.15 (0.035) | 0.09 (0.68) | 0.05 (0.003) | −0.04 (0.767) |
| Age | −0.04 (0.766) | 0.04 (0.15) | −0.18 (0.612) | 0.01 (0.630) | 0.01 (0.624) | 0.13 (0.09) | < 0.01 (0.84) | −0.02 (0.621) |
| MASQ4 Anxiety | 0.07 (<0.001) | <0.01 (0.96) | 0.02 (<0.001) | 0.01 (0.003) | 0.01 (<0.001) | −0.01 (0.07) | < 0.01 (0.21) | 0.01 (0.108) |
| MASQ Depression | 0.03 (<0.001) | <0.01 (0.05) | 0.01 (<0.001) | 0.01 (0.022) | <0.01 (0.196) | < 0.01 (0.72) | < 0.01 (0.005) | < 0.01 (0.946) |
| CUDIT-R | 0.08 (0.061) | 0.01 (0.06) | 0.02 (0.023) | 0.02 (0.057) | 0.01 (0.028) | −0.01 (0.55) | < 0.01 (0.65) | 0.01 (0.407) |
| Group Effect (Difference to CB-Mon) | −1.06 (0.013) | −0.04 (0.63) | −0.21 (0.045) | −0.13 (0.143) | −0.08 (0.235) | 0.24 (0.68) | 0.02 (0.32) | −0.21 (0.100) |
| TimeLinear (CB-Abst) | 0.61 (0.125) | −0.06 (0.42) | 0.08 (0.534) | 0.19 (0.059) | 0.11 (0.239) | −0.23 (0.28) | < 0.01 (0.94) | −0.02 (0.847) |
| TimeQuadratic (CB-Abst) | −0.84 (0.070) | −0.11 (0.12) | −0.10 (0.458) | −0.25 (0.022) | −0.13 (0.213) | 0.37 (0.10) | < 0.01 (0.99) | 0.08 (0.469) |
| TimeLinear x Group Interaction | −0.88 (0.110) | −0.28 (0.004) | 0.02 (0.903) | −0.14 (0.284) | −0.09 (0.434) | 0.21 (0.43) | 0.02 (0.54) | −0.01 (0.919) |
| TimeQuadratic x Group Interaction | 0.78 (0.164) | 0.27 (0.002) | −0.02 (0.911) | 0.19 (.153) | 0.07 (0.553) | −0.34 (0.22) | < 0.01 (0.85) | −0.02 (0.858) |
Note: These models include Cannabis Abstinence (CB-Abst) and Cannabis Monitoring (CB-Mon) data, and the reference group is CB-Abst. Results report unstandardized beta coefficients (p-values). Significant results are bolded. Sleep Latency and Sleep Duration are measured in hours, Sleep Efficiency as described by Wallace et al. (2022). Daytime Dysfunction, Sleep Quality, Sleep Disturbance and Sleep Medication are ordinally rated from 0 to 3.
CB-Abst: Abstinence Group; CB-Mon: Monitoring Group; PSQI: Pittsburgh Sleep Quality Inventory; MASQ: Mood and Anxiety Symptom Questionnaire; CUDIT-R: Cannabis Use Disorder Identification Test - Revised;