Table 3.

Risk of C. difficile Infection by BMI Category

	Age-adjusted OR	95% CI	Limited Multivariate OR*	95% CI	Multivariate OR**	95% CI
Obese vs. Normal	0.55	0.15 - 2.05	0.59	0.15 - 2.31	0.63	0.15 - 2.58
Overweight vs. Normal	0.28	0.08 - 1.03	0.28	0.07 - 1.07	0.33	0.08 - 1.30
Underweight vs. Normal	3.61	0.70 - 18.51	2.47	0.41 - 14.70	2.98	0.45 - 19.83
Overweight and Obese vs. Normal	0.37	0.13 - 1.04	0.37	0.13 - 1.07	0.43	0.15 - 1.29
Obese vs. Overweight and Normal	0.90	0.25 - 3.20	0.96	0.26 - 3.49	1.04	0.28 - 3.85

^*Limited Multivariate odds ratio (OR) adjusted for age, gender and ever exposure to anti-TNF therapy.

^**Multivariate OR adjusted for gender, age, tobacco use, UC disease duration, ever exposure to anti-TNF therapy, ever exposure to vedolizumab