Table 2 Descriptive statistics for the seven PSQI components and the PSQI global score (bold text) shown separately for cases with pain-related TMD and cases with pain-free TMD
PSQI component [scale range] | Cases with pain-related TMD | Cases with pain-free TMD | ||
|---|---|---|---|---|
(N = 496) | (N = 113) | |||
Mean (SD) | % of 0 values | Mean (SD) | % of 0 values | |
1. Subjective sleep quality [0–3] | 1.2 (0.8) | 17.3 | 0.8 (0.7) | 31.9 |
2. Sleep latency [0–3] | 1.2 (1.0) | 29.0 | 0.8 (0.8) | 45.1 |
3. Sleep duration [0–3] | 0.6 (0.9) | 58.9 | 0.5 (0.7) | 61.1 |
4. Habitual sleep efficiency [0–3] | 1.3 (1.3) | 44.8 | 1.0 (1.4) | 61.1 |
5. Sleep disturbances [0–3] | 1.5 (0.6) | 2.2 | 1.1 (0.4) | 1.8 |
6. Use of sleep medication [0–3] | 0.7 (1.1) | 65.1 | 0.2 (0.7) | 86.7 |
7. Daytime dysfunction [0–3] | 1.0 (0.7) | 23.4 | 0.6 (0.6) | 49.6 |
PSQI global score [0–21] | 7.1 (4.0) | 0.4 | 5.1 (3.1) | 0.0 |