Table 1.
Baseline patient characteristics
| Group (n) | OG(n = 102) | CG (n = 124) | X2/Z | P |
|---|---|---|---|---|
| Male, sex | 60 (58.8%) | 69 (55.6%) | 0.231 | 0.631 |
| Age, year | 12 (11, 13) | 12(11,14) | -1.621 | 0.105 |
| BMI(kg/m2) | 23.4 (22.0, 24.6) | 23.4(22.5, 24.75) | -0.720 | 0.472 |
| Time from first symptom to surgery (h) | 32(25, 42.75) | 33(25, 45) | -1.103 | 0.270 |
| WBC count of preoperative(×10^9/L) | 16.2(14.5, 17.5) | 16.5(14.6, 17.8) | -0.828 | 0.408 |
| CRP value of preoperative (mg/L) | 46(26, 63) | 46(26, 63) | -0.054 | 0.957 |
OG, Observation Group ; CG, Control Group; BMI, Body Mass Index; WBC, Body Mass Index; CRP, C-reactive protein