Variables

Sensitivity

Specificity

PPV

NPV

Accuracy

P-value

Pooling test

88

100

100

86.96

93.33%

<0.001

Nitrazine test

92

85

88.46

89.47

88.89%

<0.001

Fern test

92

80

85.19

86.89

86.67%

<0.001