Table 3 ROC curves of NTproBNP1, NTproBNP2, ΔNTproBNP%, RSBI and MV
Variables | NTproBNP1(pg/ml) | NTproBNP2( pg/ml) | ΔNT-proBNP% | RSBI | MV (L/min) |
|---|---|---|---|---|---|
Cutoff value | > 2003 | > 2610 | > 23.3% | > 36.398 | > 8.16 |
Sensitivity | 41.46 | 47.5 | 75.56 | 71.11 | 57.78 |
Specificity | 88.66 | 91.84 | 73.38 | 65.47 | 73.38 |
Likelihood ratio of positive test | 3.66 | 5.82 | 2.84 | 2.06 | 2.17 |
Likelihood ratio of negative test | 0.66 | 0.57 | 0.33 | 0.44 | 0.58 |
Positive predictive value,% | 37.8 | 48.7 | 31.5 | 25 | 26 |
Negative predictive value,% | 90.1 | 91.5 | 94.9 | 93.3 | 91.5 |
Youden’s index | 0.301 | 0.393 | 0.489 | 0.366 | 0.311 |
AUC | 0.639 | 0.742 | 0.744 | 0.651 | 0.552 |
95%CI | 0.580 to 0.694 | 0.688 to 0.792 | 0.693 to 0.791 | 0.597 to 0.703 | 0.496 to 0.607 |
P | 0.0075 | < 0.0001 | < 0.0001 | 0.0016 | 0.326 |