Table 6.
Relation between PSS score and sleep quality in studied cases.
| PSQI components | PSS score | Test of significance | ||
|---|---|---|---|---|
| Mild (3–6) n (%) |
Moderate (7–11) n (%) |
Severe (12–22) n (%) |
||
| Subjective sleep quality | ||||
| 0 | 66 (97.1) | 48 (75) | 24 (35.3) |
MC = 69.05 p < 0.001* |
| 1 | 2 (2.9) | 16 (25) | 32 (47.1) | |
| 2 | 0 | 0 | 12 (17.6) | |
| Sleep latency | ||||
| 0 | 58 (85.3) | 36 (56.2) | 10 (14.7) |
MC = 87.21 p < 0.001* |
| 1 | 10 (14.7) | 24 (37.5) | 28 (41.2) | |
| 2 | 0 | 2 (3.1) | 14 (20.6) | |
| 3 | 0 | 2 (3.1) | 16 (23.5) | |
| Sleep duration | ||||
| 0 | 62 (91.2) | 52 (81.2) | 36 (52.9) |
MC = 32.58 p < 0.001* |
| 1 | 6 (8.8) | 12 (18.8) | 26 (38.2) | |
| 2 | 0 | 0 | 4 (5.9) | |
| 3 | 0 | 0 | 2 (2.9) | |
| Sleep efficiency | ||||
| 0 | 56 (82.4) | 52 (81.2) | 42 (61.8) |
MC = 19.43 p = 0.003* |
| 1 | 12 (17.6) | 12 (18.8) | 18 (26.5) | |
| 2 | 0 | 0 | 6 (8.8) | |
| 3 | 0 | 0 | 2 (2.9) | |
| Sleep disturbance | ||||
| 0 | 52 (76.5) | 42 (65.6) | 22 (32.4) |
MC = 19.43 p = 0.003* |
| 1 | 14 (20.6) | 20 (31.2) | 42 (61.8) | |
| 2 | 2 (2.9) | 2 (3.1) | 4 (5.9) | |
| Day time dysfunction | ||||
| 0 | 66 (97.1) | 58 (90.6) | 48 (70.6) |
MC = 23.35 p < 0.001* |
| 1 | 2 (2.9) | 4 (6.2) | 18 (26.5) | |
| 2 | 0 | 2 (3.1) | 2 (2.9) | |
| Global score | ||||
| Good sleep ≤ 5 | 68 (100) | 64 (100) | 36 (52.9) |
MC = 73.95 p < 0.001* |
| Poor sleep > 5 | 0 | 0 | 32 (47.1) | |
MC Monte Carlo test, PSQI Pittsburgh sleep quality index, PSS Pruritus severity score, n number, % percentage.
*Statistically significant.