Table 3.
Binary logistic regression analysis of significant predictors for complicated* appendicitis (derivation cohort, n=407)
| 95% CI for Exp (B) | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Predictors | Β | SE | Wald | df | Significance | Exp(Β) | Lower | Upper |
| Jumping up test positive | 3.076 | 0.559 | 82.09 | 1 | 0.000 | 21.671 | 8.165 | 57.521 |
| Vomiting | 1.323 | 0.304 | 18.906 | 1 | 0.000 | 3.753 | 2.068 | 6.813 |
| WBC count >13.5 (×103 μL) | 0.974 | 0.315 | 9.557 | 1 | 0.002 | 2.648 | 1.428 | 4.910 |
| LY <18% | 1.102 | 0.350 | 9.919 | 1 | 0.002 | 3.012 | 1.516 | 5.981 |
| CRP >50 mg/dL | 0.989 | 0.430 | 5.289 | 1 | 0.021 | 2687 | 1.157 | 6.241 |
| Constant | −5.067 | 0.559 | 82.090 | 1 | 0.000 | 0.006 | ||
*Diagnosis by histopathology: Gangrenous with or without perforation. WBC: White blood cell count, LY: Lympocyte, CRP: C-reactive protein, CI: Confidence interval, SE: Standard error