Table 2.
Descriptive statistics and correlations matrix for all variables assessed in the study
| Variable | Mean (SD) | Sleep paralysis | Sleep quality | Anxiety | Depression | Threatening events | Alcohol | Smoking behaviour | Caffeine |
|---|---|---|---|---|---|---|---|---|---|
| Sleep paralysis | 1.67 (1.16) | 1.00 | |||||||
| Sleep quality | 5.38 (5.30) | 0.24*** | 1.00 | ||||||
| Anxiety symptoms | 22.13 (14.81) | 0.28*** | 0.35*** | 1.00 | |||||
| Depressed mood | 5.31 (5.30) | 0.28*** | 0.45*** | 0.64*** | 1.00 | ||||
| Threatening events | 1.92 (2.13) | 0.21*** | 0.26*** | 0.17*** | 0.30*** | 1.00 | |||
| Alcohol | 5.91 (7.38) | 0.08* | −0.02 | −0.08* | −0.01 | 0.09* | 1.00 | ||
| Smoking behaviour | 7.00 (22.20) | 0.16*** | 0.11** | 0.10** | 0.18*** | 0.25* | 0.20*** | 1.00 | |
| Caffeine | 7.71 (8.00) | 0.04 | 0.09* | 0.07* | 0.12** | 0.10** | 0.18*** | 0.18*** | 1.00 |
* = p < .05, ** = p < .01, *** = p < .001