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Comparison of two groups’ age, gender ratio, injured area, admission time after injury and Downey grading.
| Group | Cases | Age (y.o) | Gender ratio (Male/Female) | Injured area Upper extremity/lower extremity | Admission time after injury(h) | Downey grading (2/3) |
|---|---|---|---|---|---|---|
| Observation | 25 | 49.76±15.18 | 17/8 | 5/20 | 17.32±10.22 | 12/13 |
| Control | 25 | 51.62±15.93 | 16/9 | 8/17 | 16.79±13.61 | 14/11 |
| χ2 or t | t=0.403 | χ2=0.089 | χ2=0.936 | t=−0.153 | χ2=0.321 | |
| P | 0.689 | 0.765 | 0.333 | 0.879 | 0.571 |
