| Migliore et al. [16] | 2021 | Retrospective cohort | Lap. vs. Robot | 170 vs. 46 | Right hemicolectomy with intracorporeal anastomosis +ERAS | OR 0.16, 95% CI 0.79−1.10, P=0.74 | No difference | No difference in conversion, readmission, 30-day morbidity, and major morbidity. Operative time was longer in robotic surgery (P<0.001) |
| Asklid et al. [17] | 2022 | Retrospective cohort (the Swedish part of the international ERAS Interactive Audit System) | Open vs. Lap. vs. Robot | 3,125 (1,429 vs. 869 vs. 827) | Rectal tumor resection +ERAS | Robotic was the shortest (median 9 vs. 7 vs. 6 days) | No difference (40.9% vs. 31.2% vs. 35.9%) | Similar preoperative and intraoperative compliance to the ERAS protocol |
| Hung et al. [18] | 2023 | Retrospective cohort | Lap. vs. Robot | 155 (31 cases/quintile) | Colorectal resection +ERAS | For ≤5 days, robotic surgery: OR 5.029, 95% CI 1.321−19.421, P=0.018 | | The more recent the period, the higher the rate of robotic surgery, the higher median compliance rate of ERAS protocol, and the shorter LOS. |
| Kim et al. [19] | 2019 | Retrospective cohort | Lap./ERAS vs. SILS/Cv. Lap./Cv. | 91 vs. 83 vs. 96 | Colon cancer | ERAS was a significant factor (in multiple regression analysis, P<0.001) | No difference among the groups | No difference in reoperation and readmission among the groups |