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Analysis of optimal serum ChE threshold for predicting prognosis at different time points after severe trauma (n=81)
| Time | Optimal threshold (U/L) | Sensitivity | Specificity | Youden’s index | Positive likelihood ratio |
| Day 1 | 197.0 | 1.000 | 0.536 | 0.536 | 2.155 |
| Day 3 | 152.5 | 0.818 | 0.732 | 0.550 | 3.052 |
| Day 7 | 120.0 | 1.000 | 0.796 | 0.796 | 4.902 |
