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Comparison of clinical outcomes at 1 year after surgery [n (%)]
| Group | Case | Grade I | Grade II | Grade III | Grade IV | Grade V |
|---|---|---|---|---|---|---|
| Study group | 70 | 0 (0.00) | 5 (7.14) | 20 (28.57) | 35 (50.00) | 10 (14.29) |
| Control group | 50 | 1 (2.00) | 11 (22.00) | 21 (42.00) | 16 (32.00) | 1 (2.00) |
| χ2 | - | 1.412 | 5.571 | 2.338 | 3.867 | 5.287 |
| P | - | 0.235 | 0.018 | 0.126 | 0.049 | 0.021 |
