Table 3. Incidence and adjusted hazard ratio of colorectal cancer stratified by different entities of inflammatory bowel disease patients with or without cholecystectomy.
| Cholecystectomy | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No | Yes | |||||||||
| Variables | N | No. of Events | PY | Rate# | N | No. of Events | PY | Rate# | Crude HR | Adjusted HR |
| (95%CI) | (95%CI) † | |||||||||
| Ulcerative colitis | 234 | 2 | 1897 | 1.05 | 214 | 6 | 1533 | 3.91 | 3.53 | 2.78 |
| (0.71, 17.4) | (0.54, 14.3) | |||||||||
| Crohn’s disease | 291 | 4 | 2349 | 1.7 | 311 | 1 | 2473 | 0.4 | 0.24 | 0.13 |
| (0.03, 2.18) | (0.01, 1.49) | |||||||||
Rate#, incidence rate, per 1000 person-years; Crude HR, relative hazard ratio
Adjusted HR†: multivariable analysis including age, sex, and comorbidities