Table 2.
Pittsburgh Sleep Quality Index Scores by Sex and Group
| n | Mean | SD | Minimum | Median | Maximum | ANOVA P Value | |
|---|---|---|---|---|---|---|---|
| Sex | |||||||
| Female | 139 | 8.12 | 3.97 | 1 | 8 | 18 | <0.001 |
| Male | 134 | 6.57 | 3.15 | 1 | 6 | 15 | |
| Overall | 273 | 7.36 | 3.67 | 1 | 7 | 18 | |
| Group | |||||||
| Nonsmoker | 126 | 7.09 | 3.41 | 1 | 6 | 17 | 0.027 |
| Conventional | 25 | 7.88 | 3.84 | 2 | 8 | 17 | |
| Electronic cigarette | 79 | 6.87 | 3.65 | 1 | 7 | 17 | |
| Dual user | 44 | 8.77 | 4.01 | 1 | 10 | 18 | |
| Overall | 274 | 7.37 | 3.66 | 1 | 7 | 18 | |
| Group (female) | |||||||
| Nonsmoker | 81 | 7.61 | 3.60 | 1 | 7 | 17 | 0.006 |
| Conventional | 15 | 8.20 | 4.11 | 2 | 8 | 17 | |
| Electronic cigarette | 25 | 7.60 | 4.58 | 1 | 7 | 17 | |
| Dual user | 18 | 11.11 | 3.46 | 6 | 11 | 18 | |
| Overall | 139 | 8.12 | 3.97 | 1 | 8 | 18 | |
| Group (male) | |||||||
| Nonsmoker | 45 | 6.16 | 2.84 | 1 | 6 | 14 | 0.569 |
| Conventional | 10 | 7.40 | 3.57 | 3 | 7 | 13 | |
| Electronic cigarette | 54 | 6.54 | 3.11 | 2 | 6.5 | 15 | |
| Dual user | 25 | 7.04 | 3.61 | 1 | 6 | 15 | |
| Overall | 134 | 6.57 | 3.15 | 1 | 6 | 15 |