Table 1.

Sample characteristics of cigarette smokers based on alcohol and marijuana use in the past 30 days.

Variable	Alcohol & marijuana (n=200)	Marijuana Only (n=54)	Alcohol Only (n=158)
Sex, % Male	52.0%	55.6%	38.2%**
Ethnicity, % white	68.0%	79.6%	77.7%
Age	20.9 ± 2.0	20.4 ± 2.1	21.1 ± 2.0
Household income	-	-	-
< $20,000	23.0%	33.3%	29.7%
$21,000–$60,000	51.5%	46.3%	49.4%
$61,000–$100,000	18.5%	14.8%	13.3%
> $100,000	7.0%	5.6%	7.6%
Usual cigarettes/day	9.9 ± 5.9	12.6 ± 5.4*	11.1 ± 6.7
Days/week smoke cigarettes	6.6 ± 0.9	6.9 ± 0.4**	6.7 ± 0.9
Alcohol consumption	-	-	-
Never	0.0%	100%	0.0%
Monthly or less	36.0%	-	34.2%
2–4 times a month	36.5%	-	39.2%
2–3 time/week	19.0%	-	17.1%
4 or more times/week	8.5%	-	9.5%
Typical drinks/day	-	-	-
0	59.5%	-	60.1%
1–2	21.0%	-	20.3%
3–4	11.0%	-	8.2%
5 or more	8.5%	-	11.4%
Binge drinking days/month	4.3 ± 5.5	-	4.1 ± 6.0
Used marijuana in the Past month	100%	100%	0.0%

Shown are the % or Mean ± SD for the study sample. Binge drinking was defined as 4 or more alcoholic standard drinks for women, 5 or more alcoholic standard drinks for men. Continuous variables were compared using t-tests, categorical variables using Chi²-tests. Significant differences between cigarettes smokers who only use marijuana or only drink alcohol compared to the alcohol + marijuana user are indicated;

^*p < .05;

^**p < .01.