Table 1.
Patient baseline characteristics and crude outcome data
| Standard laparoscopic surgery (n = 234) | Robotic- assisted laparoscopic surgery (n = 237) | Total (n = 471) | |
|---|---|---|---|
| Gender | |||
| Male | 159 (67.9%) | 161 (67.9%) | 320 (67.9%) |
| Female | 75 (32.1%) | 76 (32.1%) | 151 (32.1%) |
| BMI classification | |||
| Underweight/normal | 87 (37.2%) | 93 (39.2%) | 180 (38.2%) |
| Overweight | 92 (39.3%) | 90 (38.0%) | 182 (38.6%) |
| Obese | 55 (23.5%) | 54 (22.8%) | 109 (23.2%) |
| Neo-adjuvant therapy | |||
| Yes | 103 (44.0%) | 109 (46.0%) | 212 (45.0%) |
| No | 131 (56.0%) | 128 (54.0%) | 259 (55.0%) |
| Intended procedure | |||
| High anterior resection | 34 (14.5%) | 35 (14.8%) | 69 (14.6%) |
| Low anterior resection | 158 (67.5%) | 159 (67.1%) | 317 (67.3%) |
| Abdominoperineal resection | 42 (17.9%) | 43 (18.1%) | 85 (18.0%) |
| Conversion to open surgery (outcome) | |||
| Yes | 28 (12.2%) | 19 (8.1%) | 47 (10.1%) |
| No | 202 (87.8%) | 217 (91.9%) | 419 (89.9%) |
| Missing | 4 | 1 | 5 |
Percentages given are calculated using non-missing data only. Note that out of the factors presented in this table, only ‘conversion to open surgery (outcome)’ had missing data. BMI Body Mass Index