Table 3

 Prevalence and adjusted odds ratio (OR) of internet cigarette purchasing among current cigarette smokers with internet access (n = 2399)*, 2000–2002 NJATS

Ever purchasedUsually purchased
Adjusted OR†Adjusted OR†
% (±95% CI)OR(95% CI)‡% (±95% CI)OR(95% CI)‡
*Unweighted n.
†Adjusted for all variables presented in the table.
‡95% CIs that do not include 1.0 indicate significance at the p = 0.05 level.
Sex
Male4.3 (2.5)1.0Referent1.1 (0.7)1.0Referent
Female4.7 (2.8)1.1(0.7 to 1.8)2.5 (1.0)2.0(0.9 to 4.6)
Race/ethnicity
White4.9 (2.7)1.0Referent2.0 (0.7)1.0Referent
Black1.8 (1.7)0.4(0.1 to 1.3)1.0 (1.5)0.5(0.1 to 2.5)
Hispanic3.6 (2.0)0.9(0.3 to 2.5)1.0 (1.4)0.9(0.2 to 4.5)
Other5.7 (5.4)1.3(0.4 to 4.2)0.0 (0.0)0.0(0.0 to 0.0)
Age (years)
18–244.1 (2.6)1.0Referent0.7 (0.8)1.0Referent
25–443.1 (2.4)0.6(0.3 to 1.2)0.8 (0.5)1.1(0.3 to 4.3)
45–647.2 (3.5)1.1(0.3 to 2.5)4.0 (1.8)4.4(1.1 to 17.1)
65+6.4 (5.6)0.9(0.2 to 3.3)2.7 (3.7)2.9(0.4 to 19.3)
Education
High school or less3.8 (1.5)0.6Referent1.7 (0.9)1.3Referent
Some college4.8 (1.9)1.3(0.7 to 2.4)1.9 (1.1)1.4(0.6 to 3.2)
College degree or more5.8 (2.2)1.6(0.9 to 3.0)1.4 (1.2)0.6(0.2 to 1.8)
Cigarettes per day
⩽103.3 (1.3)1.0Referent1.3 (0.8)1.0Referent
11–204.5 (1.6)1.2(0.6 to 2.4)1.8 (1.0)0.6(0.2 to 1.8)
21–304.7 (3.6)1.1(0.4 to 3.5)3.0 (3.0)0.7(0.2 to 3.0)
⩾3114.4 (7.8)3.9(1.5 to 10.2)3.4 (3.1)1.0(0.2 to 3.9)
Time to first cigarette
⩽30 mins after waking6.2 (2.8)1.4(0.7 to 2.6)3.1 (1.3)3.3(1.2 to 9.2)
30+ mins after waking3.4 (2.4)1.0Referent0.8 (0.6)1.0Referent
Past year quit attempt
Yes3.3 (2.0)1.0Referent1.1 (0.7)1.0Referent
No6.0 (3.0)1.8(1.1 to 3.0)2.5 (1.1)1.8(0.9 to 4.2)
Year
20001.7 (1.0)1.0Referent1.1 (0.9)1.0Referent
20012.7 (1.2)1.6(0.7 to 3.4)0.8 (0.6)0.6(0.2 to 1.6)
200210.0 (2.9)6.4(3.0 to 13.4)3.6 (1.6)2.9(1.1 to 7.7)
Overall 4.5 (2.4) 1.7 (0.6)