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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