UC | Controls* | Odds ratio† | 95% CI | p Value | |
---|---|---|---|---|---|
*Controls matched to primary sclerosing cholangitis (PSC) patients in terms of age/sex/locality. | |||||
†Odds of having UC relative to never smokers. | |||||
Smoking | |||||
Never | 88 (52%) | 66 (39%) | 1.0 | ||
Ever | 82 (48%) | 104 (61%) | 0.59 | 0.38–0.92 | <0.05 |
Former | 62(36%) | 61 (36%) | 0.76 | 0.46–1.26 | NS |
Current | 20 (12%) | 43 (25%) | 0.35 | 0.18–0.68 | <0.05 |
Appendectomy | |||||
No | 150 (88%) | 148 (87%) | |||
Yes | 20 (12%) | 22 (13%) | 0.9 | 0.45–1.79 | NS |
Tonsillectomy | |||||
No | 125 (74%) | 117 (69%) | |||
Yes | 45 (26%) | 53 (31%) | 0.79 | 0.48–1.71 | NS |