Table 3 Test characteristics of the biomarker-based ARDS Mortality Risk Stratification Model decision trees
From: Development of a biomarker mortality risk model in acute respiratory distress syndrome
Variables | Derivation, 80% day 0, (n = 202, 44 non-survivors) | Test, 20% day 0, resampled to n = 200 | ||
|---|---|---|---|---|
Values | 95% CI | Values | 95% CI | |
True negatives | 5 | – | 28 | – |
False positives | 19 | – | 7 | – |
True positives | 104 | – | 131 | – |
False negatives | 1 | – | 8 | – |
Sensitivity | 0.99 | (0.95, 0.99) | 0.94 | (0.88, 0.97) |
Specificity | 0.21 | (0.07, 0.42) | 0.80 | (0.63, 0.97) |
Positive predictive value | 0.85 | (0.81, 0.87) | 0.95 | (0.91, 0.97) |
Negative predictive value | 0.83 | (0.39, 0.98) | 0.78 | (0.64, 0.87) |