Development of an Open-Heart Intraoperative Risk Scoring Model for Predicting a Prolonged Intensive Care Unit Stay

Table 5

The sensitivity, specificity, positive predictive value, and negative predictive value of OHIR score at cut-off point ≥3 in this study.

OHIR score	Value (%)	95% CI
Sensitivity	72.3	60.2–82.6
Specificity	76.5	66.8–84.1
Positive predictive value	66.7	54.5–77.1
Negative predictive value	81.2	71.7–88.2
Accuracy	75	—
Likelihood ratio	3.09	—
AUC for ROC of OHIR	0.746	0.668–0.824

OHIR: Open-Heart Intraoperative Risk; CI: confidence intervals; AUC for ROC: the area under the receiver operating characteristic curve.