Table 3.
Pittsburgh Sleep Quality Index: scores and components’ descriptive analyses
| PSQI component | Score 0 | Score 1 | Score 2 | Score 3 | Statistic ͣ | df | P value | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OCD | HC | OCD | HC | OCD | HC | OCD | HC | ||||
| N (%) |
N (%) |
N (%) |
N (%) |
N (%) |
N (%) |
N (%) |
N (%) |
||||
| Subjective sleep quality | 14 (23%) | 35 (35%) | 24 (39.3%) | 54 (54%) | 16 (26.2%) | 8 (8%) | 7 (11.5%) | 3 (3%) | X2 = 11.98 | 3 | 0.001* |
| Sleep latency | 16 (26.2%) | 36 (36%) | 15 (24.6%) | 42 (42%) | 11 (18%) | 19 (19%) | 19 (31.1%) | 3 (3%) | X2 = 15.38 | 3 | < 0.001* |
| Sleep duration | 36 (59%) | 66 (66%) | 15 (24.6%) | 25 (25%) | 6 (9.8%) | 7 (7%) | 4 (6.6%) | 2 (2%) | X2 = 2.12 | 3 | 0.145 |
| Habitual sleep efficiency | 32 (52.5%) | 61 (61%) | 13 (21.3%) | 25 (25%) | 8 (13.1%) | 7 (7%) | 8 (13.1%) | 7 (7%) | X2 = 2.85 | 3 | 0.091 |
| Sleep disturbance | 1 (1.6%) | 6 (6%) | 31 (50.8%) | 78 (78%) | 25 (41%) | 16 (16%) | 4 (6.6%) | 0 (0%) | X2 = 20.60 | 3 | < 0.001* |
| Use of sleeping medication | 35 (57.4%) | 86 (86%) | 4 (6.6%) | 8 (8%) | 2 (3.3%) | 2 (2%) | 20 (32.8%) | 4 (4%) | X2 = 24.23 | 3 | < 0.001* |
| Daytime dysfunction | 11 (18%) | 51 (51%) | 20 (32.8%) | 41 (41%) | 17 (27.9%) | 7 (7%) | 13 (21.3%) | 1 (1%) | X2 = 38.25 | 3 | < 0.001* |
Abbreviations: OCD Obsessive-Compulsive Disorder, HC Healthy Controls, PSQI Pittsburgh Sleep Quality Index
ͣ X2 for a linear trend. *P < 0.05