Table 4.
Descriptive and inferential statistical indices of the dimensions of the Adolescent Sleep Hygiene Scale (ASHS), separately for good sleepers (n = 729) and poor sleepers (n = 748).
| Pittsburgh Sleep Quality Index; Categories | ||||
|---|---|---|---|---|
| Good Sleepers | Poor Sleepers | |||
| N | 729 | 748 | ||
| M (SD) | M (SD) | t-tests | Cohen’s d | |
| Dimensions of Adolescent Sleep Hygiene Scale | ||||
| Physiological | 12.93 (4.27) | 14.66 (4.96) | t(1475) = 7.15 *** | 0.37 (S) |
| Behavioral–arousing | 6.22 (2.78) | 7.80 (3.35) | t(1475) = 9.83 *** | 0.51 (M) |
| Cognitive–emotional | 18.74 (5.81) | 22.12 (5.79 | t(1475) = 11.21 *** | 0.58 (M) |
| Daytime sleepiness | 5.29 (2.43) | 6.92 (2.83) | t(1475) = 11.86 *** | 0.61 (M) |
| Sleep environment | 11.18 (4.69) | 13.58 (5.43) | t(1475) = 9.09 *** | 0.47 (S) |
| Sleep stability | 9.09 (3.38) | 10.68 (3.49) | t(1475) = 8.91 *** | 0.46 (S) |
Notes: S = small effect size; M = medium effect size. *** = p < 0.001.