Table 3.
Reference | Results | Diagnostic Accuracy | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | Pos | Neg | TP | FN | FP | TN | Se (95% CI) | Sp (95% CI) | PPV (95% CI) | NPV (95% CI) | +LR (95% CI) | -LR (95% CI) | |
Reader 1 | 59 | 34 | 25 | 21 | 13 | 9 | 16 | 0.62 (0.45-0.76) | 0.64 (0.45-0.80) | 0.7 (0.52-0.83) | 0.55 (0.38-0.72) | 1.72 (0.96-3.08) | 0.6 (0.36-1.0) |
Reader 2 | 59 | 34 | 25 | 23 | 8 | 9 | 19 | 0.74 (0.57-0.86) | 0.68 (0.49-0.82) | 0.72 (0.55-0.84) | 0.7 (0.52-0.84) | 2.31 (1.3-4.11) | 0.38 (0.2-0.73) |
N = sample size; Pos = positive; Neg = negative; TP = true-positive; FN = false-negative; FP = false-positive; TN = true-negative; Se = sensitivity; Sp = specificity; PPV = positive predictive value; NPV = negative predictive value; +LR = likelihood ratio of a positive result; -LR = likelihood ratio of a negative result.