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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