. Author manuscript; available in PMC: 2015 Jan 26.

Published in final edited form as: J Child Adolesc Subst Abuse. 2014 Nov 10;24(1):37–45. doi: 10.1080/1067828X.2012.756442

Table 2.

Prevalence Rates of Categorical Measures of Tobacco Use by Group and Summary of Logistic Regressions

		ADHD-Ext		ADHD-Only		Comparison		ADHD-Ext > C	ADHD-only > C	ADHD-Ext > ADHD- Only
		n	%	n	%	n	%	OR (95%CI)^a	OR (95%CI)^a	OR (95%CI)^a
Time 4
	Any tobacco use	76	84.4	21	75.0	65	69.9	2.29^* (1.04–5.08)	1.14 (0.42–3.07)	2.01 (0.70–5.80)
	Regular tobacco use	61	67.8	12	41.4	39	41.9	2.68^** (1.39–5.16)	1.00 (0.42–2.39)	2.82^* (1.17–6.81)
Time 5
	Any tobacco use	71	81.6	18	72.0	58	63	2.76^* (1.28–5.96)	1.38 (0.50–3.78)	2.00 (0.69–5.79)
	Regular tobacco use	55	61.1	12	41.4	34	36.6	2.61^* (1.34–5.07)	1.37 (0.55–3.42)	1.90 (0.76–4.77)
Time 6
	Any tobacco use	59	80.8	14	70.0	48	57.1	2.46^* (1.12–5.40)	1.41 (0.48–4.15)	1.74 (0.55–5.51)
	Regular tobacco use	38	42.2	10	34.5	30	32.3	1.62 (0.80–3.28)	1.58 (0.58–4.30)	1.02 (0.37–2.83)

Note. ADHD-Ext = ADHD-externalizers; ADHD-Only = ADHD only; C=Comparison group; OR=odds ratio.

Odds ratios were from logistic regressions controlling for age, gender, and current stimulant medication use.

p < .05,

^**

p < .01