Table 4 Test characteristics for various thresholds of the MRSA score and the HCA risk factors on the validation set
MRSA score (0 to 8) | Sensitivity | Specificity | Positive predictive value | Negative predictive value | Overall prevalence of patients with the score value or higher in the validation set |
|---|---|---|---|---|---|
2 | 95.2% | 7.7% | 35.3% | 75.3% | 93.3% |
3 | 80.2% | 30.9% | 38.0% | 74.7% | 72.9% |
4** | 61.6% | 58.6% | 44.0% | 74.3% | 48.4% |
5* | 44.8% | 75.9% | 49.6% | 72.3% | 31.2% |
6 | 17.0% | 90.4% | 48.3% | 67.4% | 12.2% |
7 or 8 | 2.8% | 99.4% | 70.0% | 65.9% | 1.4% |
HCA risk factors | 32.0% | 64.5% | 32.3% | 64.3% | 34.3% |