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Table 4 Accuracy of the prediction scores of the nomogram for estimating the risk of intrapartum fever

From: Nomogram for perinatal prediction of intrapartum fever: a retrospective case–control study

Variable Value (95% CI)
Training cohort Validation cohort
Area under ROC curve (CI) 0.86 (0.81–0.90) 0.81 (0.73–0.90)
Cut-off score 167 167
Sensitivity, % 88.6 (85.3–91.3) 88.5 (83.0–92.5)
Specificity, % 66.7 (47.1–82.1) 52.9 (28.5–76.1)
Positive predictive value, % 97.6 (95.5–98.8) 95.5 (91.0–97.9)
Negative predictive value, % 27.8 (18.2–39.8) 29.0 (14.9–48.2)
Positive likelihood ratio 2.66 (1.60–4.42) 1.88 (1.13–3.12)
Negative likelihood ratio 0.17 (0.13–0.23) 0.22 (0.13–0.36)
  1. Abbreviations: CI Confidence interval, ROC Receiver operating characteristic