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Table 4 Statistical significance of cut-off points determined using the C5.0 decision tree algorithm (for multivariate analysis)

From: A hybrid decision support model to discover informative knowledge in diagnosing acute appendicitis

Variables

OR (95% CI)

p value

Level 0 (root node)

  

NEUT ≤ 73.1% or > 73.1%

11.506 (6.244-21.202)

0.000

Level 1

  

Urine glucose (negative)

0.041 (0.006-0.310)

0.002

Urine glucose (positive)

24.115 (3.227-180.216)

0.002

Level 2*

  

Abdominal pain

2.722 (1.445-5.125)

0.002

LUQ pain

0.732 (0.014-37.307)

0.876

PA or RLQ or Upper abdominal pain

5.880 (2.727-12.681)

0.000

LLQ or Lower abdominal or RUQ pain

4.231 (1.292-13.855)

0.017

Level 3

  

Bilirubin (T) ≤ 1.0 mg/dL or > 1.0 mg/dL

6.200 (2.604-14.762)

0.000

Level 4

  

Lipase ≤ 46 U/L or > 46 U/L

37.800 (1.829-781.085)

0.019

  1. * LUQ, left upper quadrant; PA, periumbilical area; RLQ, right lower quadrant; LLQ, left lower quadrant; RUQ, right upper quadrant