3.
2组患者远期手术相关不良事件发生率比较
Comparing the Long-term incidence of adverse operation events in the 2 groups (%)
| Group | Adverse events (n) | No adverse events (n) | χ2 | P |
| Control group | 11 (36.7%) | 15 | 4.841 | 0.028 |
| Trial group | 4 (14.8%) | 23 |
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