TNF and inflammatory bowel disease: This association was maintained after a multivariate logistic regression analysis (hazard ratio (HR), 1.770; 95% CI, 1.100–2.848; p value 0.019), where type of IBD and type of anti-TNF drug were also independent variables associated with response (HR, 2.235; 95% CI, 1.363–3.666; p value 0.001; and HR, 1.7; 95% CI, 1.018–2.777; p value 0.043, respectively).