Table 3.
Multivariate logistic regression analysis for 3 clinical scenarios* involving patients with ulcerative colitis
| Variable | Clinical scenario; odds ratio (95% CI) | ||
|---|---|---|---|
| 1 | 2 | 3 | |
| Surgeon volume | |||
| Low | 0.85 (0.4–1.6) | 0.4 (0.1–1.7) | 0.73 (0.3–1.5) |
| Medium | 0.75 (0.4–1.4) | 0.4 (0.1–2.1) | 0.66 (0.3–1.4) |
| High | 1.0 | 1.0 | 1.0 |
| Practice setting | |||
| Academic | 1.0 | 1.0 | 1.0 |
| Community | 0.81 (0.5–1.3) | 0.96 (0.2–4.0) | 1.26 (0.7–2.2) |
| Years in practice | 1.01 (0.9–1.1) | 1.01 (0.9–1.1) | 0.98 (0.9–1.0) |
| Country | |||
| Canada | 3.23 (1.1–9.7) | 1.3 (0.1–11.6) | 10.6 (3.3–33.9) |
| United States | 1.0 | 1.0 | 1.0 |
CI = confidence interval.
*
In scenarios 1 and 2 the probablility of ileal pouch anal anastomosis is modelled, in scenario 3 the probability of a subtotal colectomy with end ileostomy is modelled.