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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Addict Behav. 2016 Apr 21;60:154–159. doi: 10.1016/j.addbeh.2016.04.008

Table 1.

Demographic and clinical characteristics by past 14 day product use.

Variable Cigarettes only Cigarettes + e-cigarettes Cigarettes + hookah Cigarettes + both Total
n 191 60 58 68 377
Age, M (SD) 20.6 (1.9)a 20.7 (2.0)a 20.1 (1.4)a 20.5 (1.6)a 20.5 (1.8)
Sex, % male 55.0% a 64.4% a 56.9% a 63.2% a 58.2%
Race/ethnicity, % 40.3% a 48.3% a 41.4% a 36.8% a 41.1%
Caucasian
Student status, % full time student 57.1% ab 46.7% b 74.1%c 64.7%ac 59.4%
Cigarette smoking days in past 2 weeks, M (SD) 5.8 (4.1)a 5.3 (3.8)a 6.0 (3.9)a 6.3 (4.0)a 5.7 (4.0)
E-cigarette expectancies, M (SD) 1.9 (0.5)a 2.4 (0.5)b 2.0 (0.5)a 2.3 (0.6)b 2.1 (0.6)
Hookah expectancies, M (SD) 2.1 (0.6)a 2.2 (0.6)ab 2.4 (0.7)bc 2.6 (0.6)c 2.2 (0.7)

Note: different superscripts reflect significant differences between use groups (p < .05).