Table 5 Various cutoff scores for the Chinese version of the PSQI
| Cutoff score | Sensitivity | Specificity |
|---|---|---|
| 0.5 | 1.00 | 0.03 |
| 1.5 | 1.00 | 0.11 |
| 2.5 | 1.00 | 0.28 |
| 3.5 | 0.92 | 0.49 |
| 4.5 | 0.81 | 0.70 |
| 5.5 | 0.66 | 0.82 |
| 6.5 | 0.53 | 0.91 |
| 7.5 | 0.32 | 0.94 |
| 8.5 | 0.15 | 0.97 |
| 9.5 | 0.10 | 0.98 |
| 10.5 | 0.09 | 0.99 |
| 13.0 | 0.03 | 1.00 |
| 16.0 | 0.00 | 1.00 |