Characteristic

Sensitivity

Specificity

+PV

-PV

Accuracy

AUC

Circumcision

82.84

56.60

85.9

50.8

76.58

0.697

Parity > 3 times

59.76

73.58

87.8

36.4

63.06

0.667

Duration of use > 12 months

60.36

69.81

86.4

35.6

62.61

0.651

Mixed risks

34.32

96.23

96.7

31.5

49.10

0.653