Patient demographic and clinical characteristics and system characteristics for patients who underwent elective laparoscopic or open colectomy for colon cancer between 2004/05 and 2014/15 in Canada (excluding Quebec)
| Variable | Group; no. (%) of patients* (95% CI) | |
|---|---|---|
| Laparoscopic n = 19 691 | Open n = 43 813 | |
| Age, yr, mean ± SD | 69 ± 12 (68.8–69.1) | 70 ± 12 (69.8–70.1) |
| Sex | ||
| Male | 10 416 (52.9) (52.2–53.6) | 24 158 (55.1) (54.7–55.6) |
| Female | 9275 (47.1) (46.4–47.8) | 19 655 (44.9) (44.4–45.3) |
| Elixhauser Comorbidity Index score | ||
| 0 | 12 854 (65.3) (65.0–66.0) | 28 176 (64.3) (64.0–65.0) |
| 1–3 | 6714 (34.1) (33.4–34.8) | 15 297 (34.9) (34.5–35.4) |
| > 3 | 123 (0.6) (0.5–0.8) | 340 (0.8) (0.7–0.9) |
| Residence | ||
| Rural | 3253 (16.5) (16.0–17.1) | 10 560 (24.1) (23.7–24.5) |
| Urban | 16 438 (83.5) (82.9–83.9) | 33 253 (75.9) (75.5–76.3) |
| Surgeon volume | ||
| Low (1–7) | 5771 (29.3) (28.7–29.9) | 17 681 (40.4) (39.9–40.8) |
| High (8–37) | 13 920 (70.7) (70.1–71.3) | 26 132 (59.6) (59.2–60.1) |
| Hospital volume | ||
| Low (1–36) | 5301 (26.9) (26.3–27.5) | 20 100 (45.9) (45.5–46.4) |
| High (37–102) | 14 390 (73.1) (72.5–73.7) | 23 713 (54.1) (53.7–54.6) |
| Resection type | ||
| Right hemicolectomy | 10 004 (50.8) (50.1–51.5) | 19 902 (45.4) (44.9–45.9) |
| Left hemicolectomy | 5809 (29.5) (28.9–30.1) | 12 200 (27.8) (27.4–28.3) |
| Anterior resection | 2706 (13.7) (13.3–14.2) | 8403 (19.2) (18.8–19.6) |
| Other | 1172 (6.0) (5.6–6.3) | 3308 (7.6) (7.3–7.8) |
Note: CI = confidence interval, SD = standard deviation.
↵* Except where noted otherwise.