Comparison of cases begun open versus converted cases
| Factor | Open | Converted | p value |
|---|---|---|---|
| No. of patients | 11 | 9 | |
| Age, yr | 62 (33–76) | 72 (47–78) | 0.06 |
| Sex, male/female | 55%/45% | 78%/22% | 0.37 |
| BMI | 26.2 (18.5–33.3) | 23.5 (16.4–31.6) | 0.53 |
| ASA score | 2 (2–3) | 3 (2–3) | 0.36 |
| Operative time, min. | 518 (303–665) | 613 (470–892) | 0.07 |
| Estimated blood loss, mL | 700 (300–6500) | 1650 (800–5050) | 0.020 |
| Tumour size, cm | 3.1 (1.8–4.5) | 3.7 (2.8–6.5) | 0.27 |
| R0 resection margin, no. (%) | 3/8 (38%) | 4/7 (57%) | 0.62 |
| Lymph node harvest | 20 (7–30) | 19 (15–45) | 0.56 |
| Length of stay, d | 11 (6–23) | 15.5 (7–26) | 0.31 |
| Clavien I/II, no. (%) | 5 (45%) | 4 (44%) | > 0.99 |
| Clavien III/IV, no. (%) | 4 (36%) | 4 (44%) | > 0.99 |
| 90-day mortality, no. (%) | 1 (10%) | 3 (33%) | 0.30 |
ASA = American Society of Anesthesiologists; BMI = body mass index.