Table 7: Statistical diagnostic value of the scales.

Test

Alvarado

RIPASA

Proposed

Sensitivity (%)

90.47

90.64

91.06

Specificity (%)

77.00

81.00

94.00

Positive predictive value (%)

91.00

93.00

98.00

Negative predictive value (%)

90.40

90.60

91.06

Area under the curve (AUC)

0.835

0.855

0.925

Source: Result of the study.