Table 7.
Relation between psoriasis disability index and sleep quality in studied cases.
| PSQI components | Psoriasis disability index | Test of significance |
|---|---|---|
| Subjective sleep quality | ||
| 0 | 3 (0–26) |
KW = 61.88 p < 0.001* |
| 1 | 8 (1–26) | |
| 2 | 19 (4–21) | |
| Sleep latency | ||
| 0 | 3 (0–26) |
KW = 53.90 p < 0.001* |
| 1 | 8 (0–26) | |
| 2 | 12 (1–26) | |
| 3 | 10 (0–21) | |
| Sleep duration | ||
| 0 | 4 (0–26) |
KW = 22.51 p < 0.001* |
| 1 | 7.5 (0–26) | |
| 2 | 21.5 (20–23) | |
| 3 | 23 (23–23) | |
| Sleep efficiency | ||
| 0 | 4 (0–26) |
KW = 26.02 p < 0.001* |
| 1 | 10 (0–26) | |
| 2 | 7 (4–15) | |
| 3 | 26 (26–26) | |
| Sleep disturbance | ||
| 0 | 4 (0–26) |
KW = 23.29 p < 0.001* |
| 1 | 19.5 (0–26) | |
| 2 | 20 (17–21) | |
| Day time dysfunction | ||
| 0 | 4 (0–26) |
KW = 38.74 p < 0.001* |
| 1 | 19 (0–26) | |
| 2 | 16.5 (12–21) | |
| Global score | ||
| Good sleep ≤ 5 | 4 (0–26) | Z = 7.44, p < 0.001* |
| Poor sleep > 5 | 20.5 (4–26) | |
KW Kruskal Wallis test, Z Mann Whitney U test, PSQI Pittsburgh sleep quality index.
*Statistically significant.