Table 4 One-factor model resulting from the exploratory factor analysis from the unrotated factor structure matrix for the seven PSQI components derived separately from cases with pain-related TMD (N = 496), cases with pain-free TMD (N = 113), and all TMD cases together (N = 609)
PSQI component | Cases with pain-related TMD | Cases with pain-free TMD | All TMD cases |
|---|---|---|---|
1. Subjective sleep quality | 0.83 | 0.88 | 0.84 |
2. Sleep latency | 0.74 | 0.73 | 0.75 |
3. Sleep duration | 0.77 | 0.64 | 0.74 |
4. Habitual sleep efficiency | 0.52 | 0.47 | 0.51 |
5. Sleep disturbances | 0.76 | 0.82 | 0.78 |
6. Use of sleep medication | 0.56 | 0.04 | 0.56 |
7. Daytime dysfunction | 0.58 | 0.71 | 0.62 |