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Table 4 Prediction model, ALVARADO score, and PAS performance at optimal cutoff point values (Validation Sample: n = 156)

From: A clinical prediction model for complicated appendicitis in children younger than five years of age

 

Optimal cutoff point

Sensitivity

(%)

Specificity

(%)

PPV

(%)

NPV (%)

+LR

-LR

Prediction model

0.62

76.8

89.2

88.7

77.6

7.11

0.26

ALVARADO score

7

57.3

79.7

64.3

67.2

2.83

0.54

PAS

7

64.6

70.3

70.7

64.2

3.52

0.61

  1. PAS Pediatric Appendicitis Score, PPV positive predictive value, NPV negative predictive value, +LR positive likelihood ratio, −LR negative likelihood ratio