Table 2.
Univariate 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 | 0.72 (0.4–1.3) | 0.38 (0.1–1.7) | 0.61 (0.3–1.2) |
| Medium | 0.66 (0.4–1.2) | 0.37 (0.1–1.9) | 0.60 (0.3–1.2) |
| High | 1.0 | 1.0 | 1.0 |
| Practice setting | |||
| Academic | 1.0 | 1.0 | 1.0 |
| Community | 0.77 (0.5–1.2) | 0.82 (0.2–3.2) | 1.09 (0.6–1.8) |
| Years in practice | 1.01 (0.9–1.1) | 1.01 (0.9–1.1) | 0.99 (0.9–1.0) |
| Country | |||
| Canada | 3.60 (1.2–10.6) | 2.5 (0.3–18.6) | 10.42 (3.4–32.1) |
| 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.