Variable | Retrograde group | Antegrade group | P value |
---|---|---|---|
(N = 49) | (N = 52) | ||
Preoperative surgery | 65.9 ± 4.7 | 65.8 ± 5.0 | 0.888 |
Postoperative surgery | Â | Â | Â |
 9 months | 73.4 ± 5.2 | 73.0 ± 5.2 | 0.562 |
 12 months | 78.0 ± 4.1 | 77.9 ± 4.6 | 0.928 |
 18 months | 81.3 ± 3.9 | 81.3 ± 4.0 | 0.986 |
 24 months | 83.0 ± 4.2 | 83.2 ± 4.0 | 0.77 |
 36 months | 84.6 ± 4.7 | 84.4 ± 4.3 | 0.855 |
 RP | 2 (4.1%) | 3 (5.8%) | 1 |
 EGR | 42/7 (85.7%) | 43/9 (82.6%) | 0.788 |