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Comparison of patency rate between two groups
| Primary patency rate | Experimental group (n=41) | Control group (n=42) | P value |
|---|---|---|---|
| One week after operation | 41 (100%) | 42 (100%) | 1 |
| Three months after operation | 39 (92.8%) | 38 (90.4%) | 0.793 |
| six months after operation | 37 (88.1%) | 34 (80.1%) | 0.435 |
| twelve months after operation | 34 (82.9%) | 27 (64.3%) | 0.025 |
Note: Compared with the control group, P<0.05.
