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| Degree of MRD1 (mm) | Group A | Group B | P-valuea) |
|---|---|---|---|
| Preoperative MRD1 | 0.30 ± 1.1 | -0.21 ± 1.19 | - |
| Postoperative MRD1 | 1.49 ± 0.80 | 1.96 ± 0.50 | - |
| Improvement | 1.19 ± 0.91 | 2.17 ± 1.19 | < 0.001 |
Values are presented as mean±standard deviation.
a)Two-sample t-test.
