Table 5.
Test characteristics of the automated interpretation algorithm by sample
| Test characteristics by interpretation samples (%) | ||||
|---|---|---|---|---|
|
Dataset |
Sensitivity |
Specificity |
PPV |
NPV |
| |
Negative-only (versus Positive or Possible) |
|||
| Validation |
92.7 |
91.1 |
93.3 |
90.3 |
| Derivation |
93.2 |
96.8 |
96.8 |
93.1 |
| Overall |
92.8 |
93.1 |
93.5 |
92.3 |
| |
Positive-only (versus Possible or Negative) |
|||
| Validation |
45.3 |
99.0 |
77.4 |
95.9 |
| Derivation |
53.3 |
99.0 |
72.7 |
97.7 |
| Overall |
45.0 |
99.0 |
75.8 |
96.3 |
| |
Possible-only (versus Positive or Negative) |
|||
| Validation |
86.6 |
87.4 |
79.1 |
92.3 |
| Derivation |
94.2 |
89.9 |
87.9 |
95.2 |
| Overall | 89.9 | 87.5 | 83.8 | 92.4 |
PPV Positive predictive value, NPV Negative predictive value.