Table 1.
Correlations and descriptive statistics.
| Measure | 1 | 2 | 3 | 4 | 5 | N | M | SD | Range |
|---|---|---|---|---|---|---|---|---|---|
| 1. PSQI | – | 454 | 5.60 | 3.80 | 0–18 | ||||
| 2. DERS | 0.391* | – | 458 | 58.59 | 21.21 | 30–125 | |||
| 3. BITe | 0.553* | 0.619* | – | 458 | 11.73 | 5.99 | 5–30 | ||
| 4. Depression | 0.536* | 0.646* | 0.634* | – | 458 | 7.89 | 9.75 | 0–40 | |
| 5. Anxiety | 0.509* | 0.539* | 0.570* | 0.667* | – | 458 | 5.18 | 6.68 | 0–34 |
| 6. Age | −0.015 | −0.192* | −0.077 | −0.062 | −0.143* | 456 | 40.54 | 11.44 | 19–74 |
Note. PSQI = Pittsburgh Sleep Quality Index; DERS = Difficulties with Emotion Regulation Scale (without Awareness subscale); BITe = Brief Irritability Test. Higher scores reflect poorer sleep quality and emotion regulation and higher irritability, depression, and anxiety, respectively.
*
p < .001.