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| Features | Normal | NEC | p-value | |
|---|---|---|---|---|
| Intramural gas | No | 102/0 | 84/27 | <0.0001 |
| Yes | ||||
| Portal venous gas | No | 102/0 | 91/20 | <0.0001 |
| Yes | ||||
| Bowel dilatation | No | 80/22 | 77/34 | 0.133 |
| Yes | ||||
| Reduced inflation | No | 79/23 | 100/11 | 0.012 |
| Yes | ||||
| Pneumoperitoneum | No | 102/0 | 110/1 | 0.337 |
| Yes |
