| TULPG + SEV (n = 20) | LTG (n = 20) | P value |
---|---|---|---|
RQD score | Â | Â | Â |
 1 month after operation | 6.5 ± 4.75 | 5.65 ± 2.96 | 0.501 |
 3 months after operation | 6 ± 2.63 | 7.05 ± 2.89 | 0.238 |
 6 months after operation | 5.25 ± 2.14 | 4.95 ± 2.06 | 0.655 |
Postoperative endoscopic findingsa | 2 | 2 | 1.000 |
 B | 1 | 2 |  |
 C or D | 1 | 0 |  |