Table 2.
Multilevel regression results (Study 1).
| Predictors | DV = Daily Sleep quantity (Minutes) |
DV = Slope between daily confirmed cases and sleep quantity | ||
|---|---|---|---|---|
| Estimate | SE | Estimate | SE | |
| Intercept | 324.75** | 14.63 | −0.01 | 0.03 |
| Within-individual level | ||||
| Self-perceived sleep quality | 26.41** | 2.23 | ||
| Caffeine abstinence | 8.64 | 6.60 | ||
| Between-individual level | ||||
| Experimental condition | 17.00 | 11.67 | 0.05* | 0.03 |
The effects of self-perceived sleep quality and caffeine abstinence on sleep quantity were modeled as fixed slopes. Caffeine abstinence was coded as 0 = taking caffeine, 1 = no taking caffeine. Experimental condition was coded as 0 = mind-wandering control group, 1 = mindfulness intervention group. *p < 0.05; **p < 0.01.