Table 1

Demographic and smoking characteristics of subjects by type of smoker

Variable		Type of smoker		All subjects
Variable		Regular	Light	All subjects		Ultra Light
N	944	816	360	2120
Weighted %	46.9	38.5	14.5	100

Sex^1-150
% Male	62.0^a	48.8^b	38.9^c	53.5
% Female	38.0	51.2	61.1	46.5

Race^1-150
% White	73.7^a	79.7^b	83.4^b	77.4
% Black	15.5	8.1	10.0	11.8
% Hispanic	7.7	7.3	5.1	7.2
% Other	3.1	5.0	1.5	3.6

Education^1-150
% HS grad	54.4^a	49.9^a	40.1^b	50.6
% Some college	29.8	31.2	31.6	30.6
% College graduate	15.8	18.8	28.3	18.8

Age	40.9^a	40.1^a	43.8^b	41.0
	(0.53)	(0.56)	(0.90)	(0.35)
CPD	21.8^a	21.2^a	19.5^b	21.2
	(0.41)	(0.45)	(0.57)	(0.27)
Years smoked	21.0^ab	20.0^a	22.0^b	20.8
	(0.49)	(0.51)	(0.84)	(0.33)
FTND	4.9^a	4.5^b	4.0^c	4.6
	(0.10)	(0.12)	(0.16)	(0.07)
Quit attempts	2.1^a	2.4^b	2.2^ab	2.2
	(0.10)	(0.14)	(0.17)	(0.07)

Means with different letters are significantly different at p ⩽ 0.05. Numbers in parentheses are standard errors.
↵1-150 Differences assessed using pairwise χ² tests of association.
CPD, cigarettes per day, FTND, Fagerstrom test for nicotine dependence; HS High school.