Table 2.
Diagnostic value 6 h post surgery | ||||||||
---|---|---|---|---|---|---|---|---|
POP/n | Cutoff point (ng/ml) | Se | Sp | PPV | NPV | AUC | p | |
Pilot study | 5/20 | 15.90 | 0.80 | 1.00 | 1.00 | 0.76 | 0.840 | < 0.01 |
Validation study | 17/155 | 15.20 | 0.41 | 0.95 | 0.47 | 0.94 | 0.745 | < 0.001 |
AUC area under the curve, NPV negative predictive value, POP postoperative pneumonia, PPV positive predictive value, Se sensitivity, Sp specificity