Table 3. Receiver operating characteristic analysis of laboratory parameters in the differentiation of non-perforated appendicitis and perforated appendicitis, 2021.
| Test result variable (s) | AUROC | p | Asymptotic 95% confidence interval | Cutoff value | Sensitivity (%) | Specificity (%) | |
|---|---|---|---|---|---|---|---|
| Lower bound | Upper bound | ||||||
| IGC | 0.732 | 0.013 | 0.582 | 0.883 | >0.075 | 72.7 | 74 |
| IG% | 0.682 | 0.053 | 0.504 | 0.860 | >0.650 | 45.5 | 87.7 |
| Total bilirubin | 0.804 | 0.001 | 0.671 | 0.937 | >0.875 | 81.8 | 80.8 |
| Indirect bilirubin | 0.729 | 0.015 | 0.573 | 0.884 | >0.515 | 63.6 | 76.7 |
| WBC | 0.669 | 0.072 | 0.490 | 0.848 | >13.785 | 63.6 | 79.9 |
| Direct bilirubin | 0.762 | 0.005 | 0.591 | 0.934 | >0.345 | 72.7 | 80.8 |
| NLR | 0.589 | 0.343 | 0.391 | 0.787 | >14.200 | 36.4 | 94.5 |
IGC: immature granulocyte count; IG%: immature granulocyte percentage; WBC: white blood cell; NLR: neutrophil/lymphocyte ratio; ROC: receiver operating characteristic curve; AUROC: area under the receiver operating characteristics.