Table 2. Receiver operating characteristic analysis of laboratory parameters in differentiating simple appendicitis and complicated appendicitis, 2021.
| Test result variable(s) | AUROC | p | Asymptotic 95% confidence interval | Cutoff value | Sensitivity (%) | Specificity (%) | |
|---|---|---|---|---|---|---|---|
| Lower bound | Upper bound | ||||||
| IGC | 0.831 | <0.001 | 0.725 | 0.936 | >0.075 | 73.9 | 83.6 |
| IG% | 0.778 | <0.001 | 0.662 | 0.894 | >0.65 | 47.8 | 95.1 |
| Total bilirubin | 0.883 | <0.001 | 0.801 | 0.966 | >0.85 | 78.3 | 88.5 |
| Indirect bilirubin | 0.841 | <0.001 | 0.749 | 0.934 | >0.49 | 73.9 | 85.2 |
| WBC | 0.735 | 0.001 | 0.614 | 0.856 | >13,615 | 69.6 | 73.8 |
| Direct bilirubin | 0.838 | <0.001 | 0.725 | 0.951 | >0.32 | 73.9 | 88.5 |
| NLR | 0.658 | 0.026 | 0.517 | 0.799 | >6.65 | 60.9 | 63.9 |
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.