. Author manuscript; available in PMC: 2015 Aug 1.

Published in final edited form as: Addict Behav. 2014 Apr 13;39(8):1272–1277. doi: 10.1016/j.addbeh.2014.04.005

Table 4.

Logistic Regression Models Predicting Tobacco Use From ADHD Symptoms and UPPS Impulsivity Dimensions.

	Model 1	Model 2
Likelihood Ratio Test Chi-Square	12.79^**	32.38^***
Nagelkerke's Pseudo R²	0.06	0.15
Independent Variable (Standardized)	ExpB (95% CI)	ExpB (95% CI)
CAARS Inattentive	0.99 (0.70-1.49)	0.66 (0.41-1.08)
CAARS Hyperactive	1.66^** (1.17-2.36)	1.43 (0.93-2.20)
UPPS Negative Urgency		2.13^*** (1.44-3.17)
UPPS Sensation Seeking		1.10 (0.78-1.54)
UPPS (lack of) Premeditation		0.98 (0.66-1.45)
UPPS (lack of) Perseverance		1.34 (0.85-2.09)

*p < .05

^**

p < .01

^***

p < .001

Note. CAARS = Conners Adult ADHD Rating Scale; UPPS = Urgency Premeditation Perseverance Sensation Seeking Scale. Estimated percent change is described in the text for each significant predictor. Parenthetical values are 95% confidence intervals.