Table 9 Characteristics of the possible cut-off scores for the chinese PRISMA-7 questionnaire for all participants
Cut-off | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) |
|---|---|---|---|---|
0 | 100 | 0 | 9.0 | – |
1 | 100 | 2.8 | 9.0 | 100 |
2 | 100 | 36.7 | 14.0 | 100 |
3 | 100 | 85.3 | 41.0 | 100 |
4 | 81.8 | 97.2 | 75.0 | 98.1 |
5 | 54.5 | 100 | 100 | 95.6 |
6 | 18.2 | 100 | 100 | 92.4 |
7 | 0.0 | 100 | – | 90.8 |