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Table 4 Performances of the model in the training set and validation set

From: Development and validation of a prediction model on spontaneous preterm birth in twin pregnancy: a retrospective cohort study

Parameters

Training set

Validation set

AUC (95%CI)

0.71 (0.68–0.74)

0.68 (0.64–0.73)

Accuracy (95%CI)

0.74 (0.72–0.77)

0.75 (0.71–0.78)

Specificity (95%CI)

0.70 (0.67–0.80)

0.86 (0.64–0.93)

Sensitivity (95%CI)

0.64 (0.54–0.68)

0.42 (0.33–0.69)

PPV (95%CI)

0.64 (0.57–0.72)

0.66 (0.55–0.76)

NPV (95%CI)

0.76 (0.73–0.78)

0.76 (0.72–0.80)

  1. AUC area under the curve, PPV positive predictive value, NPV negative predictive value, CI confidence interval