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| Groups | Number | Pre-treatment serum BChE(U/I) Median (IQR) |
| Controls | 20 | 1725.5 (1400.3, 2266.5) |
| Cases | 39 | 6956 (5892, 8344) |
| * P value | <0.0001 |
Mann-Whitney Test
Interquartile Range
