Table 4.

Prediction of clinical remission by smoking habits at baseline.

			Remission
			Yes		No
			n	%	n	%
Study	Treatment	Smoking status	5	20.8	3	50.0
BUC-60	Budesonide	Current smoker
		Former smoker	5	20.8	2	33.3
		Never smoked	14	58.3	1	16.7
		Total	24	100.0	6	100.0
	Mesalazine	Smoking status	3	37.5	8	47.1
		Current smoker
		Former smoker	1	12.5	3	17.6
		Never smoked	4	50.0	6	35.3
		Total	8	100.0	17	100.0
	Placebo	Smoking status	2	14.3	10	43.5
		Current smoker
		Former smoker	3	21.4	7	30.4
		Never smoked	9	64.3	6	26.1
		Total	14	100.0	23	100.0
BUC-63	Budesonide	Smoking status	37	39.8	4	28.6
		Current smoker
		Former smoker	29	31.2	8	57.1
		Never smoked	27	29.0	2	14.3
		Total	93	100.0	14	100.0

Current + former smokers vs non-smokers in the placebo group: odds ratio (OR) 0.21, 95% confidence interval (CI) 0.04–1.00, p = 0.04.

Current smokers vs non-smokers in the placebo group: OR 0.14, 95% CI 0.01–1.04, p = 0.05.