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Table 4 Diagnostic value for predicting delivery at < 34 weeks [< 37 weeks] of gestation (n = 73)

From: Risk factors for spontaneous miscarriage above 12 weeks or premature delivery in patients undergoing cervical polypectomy during pregnancy

 Sensitivity (%)Specificity (%)PPV (%)NPV (%)
Polyp width (≥ 12 mm)56.2 [50.0]86.0 [86.7]52.9 [58.8]87.5 [82.1]
Bleeding before polypectomy87.5 [75.0]52.6 [50.9]34.1 [36.5]93.7 [84.3]
Polypectomy at ≤10 weeks81.2 [75.0]56.1 [56.6]34.2 [39.4]91.4 [85.7]
Width & bleeding43.7 [35.0]93.0 [90.5]63.6 [58.3]85.5 [78.6]
Width & polypectomy37.5 [35.0]94.7 [96.2]66.7 [77.7]84.4 [79.6]
Bleeding & polypectomy75.0 [60.0]75.4 [73.4]46.1 [46.1]91.5 [82.9]
Width & bleeding & polypectomy31.2 [25.0]96.5 [96.2]71.4 [71.4]83.3 [77.2]
  1. Values in brackets [] are the results of risk factors for delivery < 37 weeks of gestation
  2. PPV positive predictive value, NPV negative predictive value