Cut-off score | Specificity | Sensitivity | Positive Predictive Value | Negative Predictive Value | False Positive Rate |
5 or over | 80% | 92% | 96.77% | 60.53% | 2% (n = 2) |
6 or over | 70.67% | 96% | 98.15% | 52.17% | 1% (n = 1) |
7 or over | 41.33% | 100% | 100% | 36.23% | 0% |