AM801 | CMS50D | MD300C19 | MD300C29 | PC-60F | Overall | |
+ve cases | 38 | 40 | 28 | 25 | 28 | 159 |
-ve cases | 148 | 152 | 157 | 150 | 149 | 756 |
Total | 186 | 192 | 185 | 175 | 177 | 915 |
FPR | 10.8% | 21.1% | 7.6% | 10.7% | 6.0% | 11.2% |
FNR | 15.8% | 17.5% | 25.0% | 28% | 42.9% | 24.5% |
PPV | 66.7% | 50.8% | 63.6% | 52.9% | 64.0% | 58.5% |
NPV | 95.7% | 94.5% | 95.4% | 95.0% | 92.1% | 94.5% |
The rows titled ‘+ve cases’ and ‘−ve cases’ show the total number of data pairs with a respective positive or negative reading from the reference device. The FPR, FNR, PPV and NPV show, respectively, the observed FPR, FNR, PPV and NPV for each device.
FNR, false negative rate; FPR, false positive rate; NPV, negative predictive value; PPV, positive predictive value.