Table 2.

Predictors of Nicotine and Marijuana Interaction Expectancy Questionnaire Scales among African American Young Adult Marijuana and Cigarette Co-Users (N = 111)

	Non-Blunt Marijuana and Cigarette Co-Users						Blunt and Cigarette Co-Users

NAMIE Scales	B	SE(B)	β	p	Model R²	Model p	B	SE(B)	β	p	Model R²	Model p
*(1) Marijuana increases tobacco use and urges*					0.13	0.41					0.02	0.23
Days of past month marijuana use	−0.01	0.00	−0.06	0.73			−0.17	0.01	−0.28	0.04
Days of past month tobacco use	−0.01	0.01	−0.01	0.95			0.03	0.02	0.03	0.85
Age at first marijuana use	−0.09	0.05	−0.55	0.06			−0.03	0.04	−0.09	0.39
Age at first tobacco use use	0.05	0.04	0.34	0.24			0.01	0.03	0.03	0.82
*(2) Tobacco increases marijuana use and urges*					0.10	0.53					0.09	<.01
Days of past month marijuana use	−0.01	0.01	−0.28	0.13			0.02	0.01	−0.36	<.01
Days of past month tobacco use	−0.02	0.02	−0.16	0.38			−0.02	0.14	−0.03	0.89
Age at first marijuana use	0.00	0.07	−0.01	0.99			−0.01	0.03	−0.02	0.83
Age at first tobacco use	−0.01	0.06	−0.06	0.83			0.03	0.03	0.12	0.27
*(3) Smoking to cope with marijuana urges*					0.45	0.04					0.32	<.01
Days of past month marijuana use	−0.02	0.01	−0.59	0.05			−0.04	0.01	−0.59	<.01
Days of past month tobacco use	−0.02	0.01	−0.19	0.18			0.02	0.01	0.12	0.27
Age at first marijuana use	0.04	0.04	0.19	0.40			0.03	0.03	0.1	0.30
Age at first tobacco use	0.04	0.04	0.03	0.91			0.04	0.03	0.11	0.27