Parameter | Reader 1 | Reader 2 | Reader 3 | Reader 4 | ||||
---|---|---|---|---|---|---|---|---|
Value | 95% CI | Value | 95% CI | Value | 95% CI | Value | 95% CI | |
Sensitivity (%) | 71 | 31, 99 | 75 | 34, 97 | 75 | 34, 97 | 75 | 40, 97 |
Specificity (%) | 91 | 67, 98 | 100 | 72, 100 | 100 | 72, 100 | 83 | 59, 99 |
PPV (%) | 83 | 50, 97 | 100 | 54, 100 | 100 | 54, 100 | 75 | 47, 99 |
NPV (%) | 83 | 52, 98 | 83 | 53, 98 | 83 | 53, 98 | 83 | 52, 98 |
Prevalence (%) | 39 | 17, 64 | 42 | 20, 66 | 42 | 20, 66 | 40 | 18, 67 |
Note.—If a reader responded “do not know” (four choices in three patients, or 80 choices [5%]), the choice was excluded in the calculation of sensitivity, specificity, PPV, and NPV, but it was taken into account for the calculation of interreader agreement.