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Comparison of 2-min walk test results (m)
| Groups | Sample size | Mean (standard deviation) | P | |
|---|---|---|---|---|
| 1 week after surgery | DAA | 30 | 111.896 (7.082) | 0.011 |
| PLA | 33 | 107.362 (6.684) | ||
| 1 month after surgery | DAA | 30 | 120.251 (5.183) | 0.013 |
| PLA | 33 | 116.154 (7.359) | ||
| 3 months after surgery | DAA | 30 | 130.810 (3.789) | < 0.001 |
| PLA | 33 | 121.167 (6.820) |
