Table 4.

Differences in Quantity and Frequency of Cigarette Use, Cigarette Cessation Attempts, Cigarette Dependence Symptoms, and Age of Cigarette Initiation across Cigarette Only Users (N = 374) and Users of Cigarettes and at Least One Alternative Product (N = 785)

	B	SE	Odds Ratio	95 % CI
Quantity and Frequency of Cigarettes Smoked
Number of cigarettes each day	0.09	0.11	1.09	0.87 – 1.36
Number of days during the past 30 days	0.05	0.06	1.05	0.93 – 1.19
Smoking Cessation Attempts
Number of quit attempts in past 12 months	0.08	0.07	1.08	0.94 – 1.24
Cigarette Dependence Symptoms
Ever strong craving for a cigarette a	0.25	0.14	1.28	0.97 – 1.69
Ever needed a cigarette a	0.35	0.14	1.40	1.07 – 1.86
Use within 30 minutes after awake b	0.12	0.23	1.13	0.72 – 1.76
Age of First Use of Cigarettes	−0.05	0.03	0.95	0.90 – 1.00

Note.

B = regression estimate; SE = standard error. Reference group is multiple-product user (ie, user of cigarettes and at least one alternative product). Separate multilevel logistic regression models were conducted for each independent variable, while controlling for sex, age, race/ethnicity, and school type (2-year vs 4-year college).

^a= Coded: 0 = no, 1 = yes.

^b= Coded: 0 = use later than 30 minutes after awake, 1= use within 30 minutes after awake.