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Surgical history reported by microscopic colitis cases and non-microscopic controls
| Cases n=110 |
Controls n=252 |
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|---|---|---|---|---|---|---|
|
|
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| No. | (%) | No. | (%) | Adjusted odds ratio† | 95% CI | |
| Cholecystectomy | 17 | (16.0) | 75 | (34.6) | 0.33 | 0.17 - 0.64 |
| Appendectomy | 22 | (20.8) | 50 | (23.4) | 0.60 | 0.31 – 1.16 |
| Tubal ligation | 26 | (28.9) | 59 | (38.1) | 0.81 | 0.43 - 1.52 |
| Hysterectomy | 27 | (30.0) | 67 | (43.2) | 0.64 | 0.34 - 1.25 |
| Oophorectomy | 14 | (15.6) | 29 | (19.0) | 0.75 | 0.33 - 1.67 |
Adjusted for age, sex, education
