Do in-person and computer-based brief alcohol interventions reduce tobacco smoking among general hospital patients? Secondary outcomes from a randomized controlled trial

Table 2 Study group differences in net changes in smoking status and cigarettes per day in smoking participants

Comparisons	Month 6		Month 12		Month 18		Month 24
Binary part (current smoking = 1)	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	p
In-person BAI vs. assessment only	1.07	0.89; 1.12	1.13	0.86; 1.48	1.18	0.88; 1.58	1.22	0.88; 1.69	0.23
Computer-based BAI vs. assessment only	1.12	0.93; 1.34	1.18	0.90; 1.54	1.17	0.87; 1.57	1.09	0.79; 1.51	0.57
In-person BAI vs. computer-based BAI	0.96	0.82; 1.12	0.96	0.76; 1.22	1.01	0.78; 1.31	1.12	0.84; 1.50	0.50

Continuous part (cigarettes per day)	ΔM	95% CI	ΔM	95% CI	ΔM	95% CI	95% CI	p
In-person BAI vs. assessment only	0.00	− 0.04–0.00	− 0.01	− 0.08–0.01	0.00	− 0.07–0.02	− 0.04–0.08	0.92
Computer-based BAI vs. assessment only	− 0.02	− 0.08–0.00003	− 0.04	− 0.15–0.00	− 0.03	− 0.14–0.00	− 0.07–0.02	0.63
In-person BAI vs. computer-based BAI	0.01	0.00–0.04	− 0.01	0.01–0.09	0.01	− 0.01–0.10	− 0.02–0.08	0.58

Adjusted model. OR odds ratio of changing smoking status from smoking to non-smoking, ΔM differences in mean net change in cigarettes per day in smoking participants, CI confidence interval, p p-value

ISSN: 1940-0640