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Table 2 Developing a scoring system for predicting complicated perforated appendicitis

From: Periappendiceal fat-stranding models for discriminating between complicated and uncomplicated acute appendicitis: a diagnostic and validation study

Variables Multivariate (model 1) Multivariate (model 2) c statistics = 0.8752 Score assigned (range of 0–10) c statistics = 0.8784
OR (95% CI) P value OR (95% CI) P value Model 1 Model 2
NLR > 10    2.11 (1.05–4.23) 0.0362* 1
CRP (per mg/dL)      (0–3) (0–3)
 3.0–5.9 mg/dL 3.58 (1.33–9.59) 0.0114 3.32 (1.27–8.72) 0.0148* 2 2
 ≥ 6.0 mg/dL 11.61 (4.95–27.21) < 0.0001* 9.97 (4.30–23.08) < 0.0001* 3 3
Fat stranding (per grade)      (0–5) (0–5)
 Grade 1 4.26 (1.08–16.74) 0.0381* 4.08 (1.40–16.04) 0.0439* 3 3
 Grade 2 6.02 (1.56–22.78) 0.0083* 6.15 (1.66–22.82) 0.0066* 4 4
 Grade 3 18.44 (4.70–72.36) < 0.0001* 18.29 (4.76–70.25) < 0.0001* 5 5
Appendicolith on CT 2.94 (1.43–6.03) 0.0179*    1
Ascites on CT 2.68 (1.19–6.07) 0.0032* 2.83 (1.25–6.39) 0.0124* 1 1
  1. BMI body mass index, CI confidence interval, CRP C-reactive protein, CT computed tomography, NLR neutrophil to lymphocyte ratio, Ref. reference group, Temp. temperature, OR odds ratio, RLQ right lower quadrant, WBC white blood cell, VAS visual analog scale
  2. *Statistical significance (P < 0.05)