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. Author manuscript; available in PMC: 2017 Mar 13.
Published in final edited form as: Alcohol Clin Exp Res. 2016 Feb 25;40(3):606–615. doi: 10.1111/acer.12980

Table 1.

Demographics and Baseline Smoking and Drinking Characteristics

Variable Level/unit Overall 15.8 mg/g 5.2 mg/g 2.4 mg/g 1.3 mg/g 0.04 mg/g 0.04 mg/g HT
n 403 64 61 67 71 60 80
Age Years 39.24 (13.75) 39.93 (14.20) 39.39 (13.70) 40.16 (12.63) 38.77 (14.63) 40.38 (14.16) 37.48 (13.42)
Sex Female 42.2 39.1 39.3 37.3 45.1 45.0 46.3
Race Non-Hispanic White 57.8 57.8 50.8 59.7 62.0 45.0 60.0
Black 33.5 37.5 41.0 32.8 28.2 36.7 27.5
Education High school or less 34.7 32.8 42.6 31.3 36.6 33.3 322.5
Some college or more 65.3 67.2 57.4 68.7 63.4 66.7 67.5
Menthol Menthol smoker 52.9 54.7 50.8 59.7 49.3 48.3 53.8
Cigarettes per day 14.98 (7.23) 14.81 (7.50) 14.97 (7.21) 14.75 (7.05) 14.98 (7.43) 14.52 (6.80) 15.66 (7.51)
Fagerström Test for Nicotine Dependence Total score 4.66 (2.27) 4.50 (2.50) 4.87 (2.14) 4.61 (2.31) 4.52 (2.40) 4.48 (2.14) 4.93 (2.13)
Alcohol Drinks per day 0.98 (1.57) 1.11 (2.02) 1.12 (1.65) 1.09 (1.82) 0.80 (1.27) 1.05 (1.51) 0.78 (1.12)
Binge Any binge 11.7 9.4 11.5 11.9 11.0 16.7 11.9
Michigan Alcohol Screening Test—Short Form Total score 3.56 (2.01) 3.44 (1.91) 3.51 (1.89) 3.57 (2.03) 3.17 (2.00) 4.13 (2.05) 3.60 (2.08)

HT, high tar.

Means (standard deviations) are reported for continuous outcomes, and proportions are reported for dichotomous/categorical outcomes. None of the baseline characteristics significantly differed between the study conditions, which were determined using omnibus chi-square tests for dichotomous outcomes (ps > 0.59) and 1-way ANOVAs for continuous outcomes (ps > 0.39).