Table 1.

Sample Characteristics

	Smoker group			Gender
	Occasional (n = 52)	Daily (n = 55)	p value	Male	Female	p value
Female	55%	31%	.01	–	–
Occasional smoker	–	–		38%	62%	.01
Age (SD)	18.8 (0.8)	19.1 (1.0)	.08	19.1 (0.9)	18.7 (0.9)	.02
Race			.02			.2
White	93%	72%		78%	87%
Black	6%	19%		22%	13%
Addicted to smoking (self report)	6%	77%	<.001	54%	28%	.007
Concerned about health effects of smoking	62%	61%	.93	65%	57%	.4
Smoke a particular brand	57%	93%	<.001	80%	70%	.2
Number of days smoked in past 30 days	14.1 (6.0)	28.5 (4.9)	<.001	22.3 (9.1)	19.7 (8.7)	.06
Mean cigarettes/day—weekday	1.7 (1.3)	12.4 (6.9)	<.001	7.9 (7.1)	6.3 (7.7)	.3
Mean cigarettes/day—weekend	3.9 (2.6)	15.1 (7.6)	<.001	10.3 (8.0)	8.7 (8.0)	.3
Carbon monoxide, ppm	3.5 (6.2)	11.7 (4.9)	<.001	9.4 (7.5)	5.4 (5.5)	.004
Age started smoking	15.9 (1.7)	15.0 (2.2)	.01	15.5 (2.2)	15.4 (1.6)	.8
Number of serious quit attempts	0.7 (1.6)	1.4 (1.9)	.04	1.3 (2.1)	0.8 (1.4)	.2
FTND	.25 (0.9)	3.2 (1.9)	<.001	2.0 (2.0)	1.6 (2.3)	.3
AUTOS	9.6 (7.4)	20.7 (8.1)	<.001	15.9 (9.4)	14.7 (9.7)	.5
Drinking days per month			.005			.5
<10	51%	77%		67%	61%
≥10	49%	23%		33%	39%
How often get drunk per week			.07			.14
None	26%	46%		36%	37%
Once per week	34%	32%		27%	41%
Twice or more per week	40%	23%		38%	22%

Note. AUTOS = Autonomy over Smoking Scale; FTND = Fagerström Test for Nicotine Dependence.