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Comparison of efficacy evaluation between the two groups
| Observation group (n=70) | Control group (n=67) | Z value | P value | |
|---|---|---|---|---|
| Complete occlusion | 54 (77.14) | 46 (68.66) | ||
| Neck residual | 12 (17.14) | 18 (26.87) | ||
| Partial occlusion | 4 (5.72) | 3 (4.47) | 1.006 | 0.315 |
