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Table 3 Prognostic accuracy comparison

From: Do heart and respiratory rate variability improve prediction of extubation outcomes in critically ill patients?

Model ROC AUC Sensitivity* Specificity* PPV* NPV* NRI*
Single logistic regression: heart rate 0.51 0.5 0.55 0.11 0.87 0.22
Single logistic regression: RSBI 0.61 0.5 0.72 0.18 0.91 0.04
Single logistic regression: respiratory rate 0.63 0.5 0.66 0.17 0.91 0.04
Ensemble of three univariate logistic regressions: 0.62 0.5 0.69 0.17 0.90 0.07
Heart rate, respiratory rate, RSBI
WAVE score 0.69 0.75 0.59 0.18 0.94 -
  1. *Positive test for probability of failure equal or above 0.5. ROC AUC, area under the receiver operating characteristic curve; PPV, positive predictive value; NPV, negative predictive value; NRI, net reclassification improvement; RSBI, rapid shallow breathing index; WAVE, weaning and variability evaluation.