Table 5 Statistical significance of cut-off points determined using the C5.0 decision tree algorithm (for univariate 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) | Â | Â |
LYMP ≤ 20.2% or > 20.2% | 12.527 (6.335-24.770) | 0.000 |
Level 1 | Â | Â |
Urine glucose (negative) | 0.036 (0.005-0.270) | 0.001 |
Urine glucose (positive) | 27.645 (3.709-206.043) | 0.001 |
BASO ≤ 1.1% | 9.333 (1.169-74.489) | 0.035 |
BASO > 1.1% | 0.107 (0.013-0.8555) | 0.035 |
Level 2* | Â | Â |
Abdominal pain | 4.487 (2.556-7.878) | 0.000 |
LUQ or LLQ or RUQ pain | 4.594 (0.929-22.712) | 0.062 |
APA pain | 1.087 (0.237-4.994) | 0.914 |
RLQ pain | 7.447 (3.274-16.938) | 0.000 |
Lower abdominal pain | 6.058 (1.273-28.826) | 0.024 |
Upper abdominal pain | 2.465 (0.099-61.267) | 0.582 |
WBC ≤ 6.2 × 103/μL or > 6.2 × 103/μL | 25.000 (0.341-1831.738) | 0.142 |
Level 3 | Â | Â |
Bilirubin (T) ≤ 1.0 mg/dL or > 1.0 mg/dL | 6.576 (2.791-15.493) | 0.000 |
WBC ≤ 14.37 × 103/μL or > 14.37 × 103/μL | 63.000 (0.982-4042.374) | 0.051 |
Cl ≤ 104 mmol/L | 9.197 (0.499-169.573) | 0.136 |
Cl > 104 mmol/L | 0.109 (0.006-2.005) | 0.136 |
Bilirubin (D) ≤ 0.4 mg/dL or > 0.4 mg/dL | 95.000 (1.482-6088.126) | 0.032 |
Level 4 | Â | Â |
Amylase (T) ≤ 58 U/L | 0.033 (0.002-0.584) | 0.020 |
Amylase (T) > 58 U/L | 29.881 (1.1711-521.765) | 0.020 |
APTT ≤ 22.6 s or > 22.6 s | 37.800 (1.829-781.085) | 0.019 |
Urine ketone (negative) | 0.667 (0.113-3.919) | 0.654 |
Urine ketone (positive) | 1.500 (0.255-8.817) | 0.654 |
Level 5 | Â | Â |
MONO ≤ 2.4% or > 2.4% | 19.667 (1.022-378.446) | 0.048 |
NEUT ≤ 84% | 0.055 (0.003-1.051) | 0.054 |
NEUT > 84% | 18.103 (0.951-344.559) | 0.054 |
MONO ≤ 3.6% or > 3.6% | 29.000 (1.413-595.209) | 0.029 |
Level 6 | Â | Â |
EOS ≤ 2.4% | 0.077 (0.004-1.426) | 0.085 |
EOS > 2.4% | 13.047 (0.701-242.739) | 0.085 |
LYMP ≤ 13.8% or > 13.8% | 49.286 (2.214-1097.056) | 0.014 |
EOS ≤ 1.5% or > 1.5% | 47.667 (1.597-1422.784) | 0.026 |
Level 7 | Â | Â |
Urine ketone (negative or positive) | 1.932 (0.423-8.814) | 0.395 |
Bilirubin (D) ≤ 0.3 mg/dL or > 0.3 mg/dL | 25.000 (0.750-832.997) | 0.072 |
Level 8 | Â | Â |
Glucose ≤ 124 mg/dL or > 124 mg/dL | 25.706 (1.307-505.514) | 0.033 |
BASO ≤ 0.4% or > 0.4% | 12.600 (0.446-356.388) | 0.137 |
Level 9 | Â | Â |
Cl ≤ 107 mmol/L or > 107 mmol/L | 18.667 (1.563-222.937) | 0.021 |
Level 10 | Â | Â |
RBC ≤ 4.14 × 103/μL or > 4.14 × 103/μL | 25.000 (0.750-832.997) | 0.072 |