Table I.
Patient characteristics.
| Total | Right-sided colon cancer | Left-sided colon cancer | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variable | MLS (n=79) | SLS (n=50) | P-value | MLS (n=36) | SLS (n=27) | P-value | MLS (n=43) | SLS (n=23) | P-value |
| Age (years)a | 76.9±5.3 | 76.6±4.8 | 0.73 | 77.8±5.6 | 77.7±5.4 | 0.96 | 76.1±4.9 | 75.1±3.7 | 0.44 |
| Gender (n) | 0.68 | 0.17 | 0.54 | ||||||
| Male | 44 | 26 | 15 | 16 | 29 | 13 | |||
| Female | 35 | 24 | 21 | 11 | 14 | 10 | |||
| BMI (kg/m2)a | 22.4±3.6 | 22.7±3.7 | 0.57 | 21.9±4.5 | 23.1±3.7 | 0.26 | 22.7±2.7 | 22.3±3.7 | 0.55 |
| ASA status (n) | 0.33 | 0.19 | 0.82 | ||||||
| 1 | 2 | 4 | 0 | 2 | 2 | 2 | |||
| 2 | 63 | 39 | 31 | 23 | 32 | 16 | |||
| 3 | 14 | 7 | 5 | 2 | 9 | 5 | |||
| Prior surgery (n) | 24 | 18 | 0.64 | 7 | 9 | 0.33 | 17 | 9 | 0.82 |
| Tumor location (n) | 0.61 | ||||||||
| Cecum | 11 | 6 | 11 | 6 | |||||
| Ascending colon | 16 | 15 | 16 | 15 | |||||
| Transverse colon | 9 | 6 | 9 | 6 | |||||
| Descending colon | 3 | 2 | 3 | 2 | |||||
| Sigmoid colon | 29 | 12 | 29 | 12 | |||||
| Rectosigmoid colon | 11 | 9 | 11 | 9 | |||||
a
Data presented as the mean ± standard deviation. All variables were evaluated using a χ2 test or Student's t-test, as appropriate. MLS, multi-port laparoscopic surgery; SLS, single-incision laparoscopic surgery; BMI, body mass index; ASA, American Society of Anesthesiologists.