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. 2015 May 20;18(4):386–394. doi: 10.1093/ntr/ntv110

Table 2.

Univariate Differences Between Smokers Who Use Cigarettes in Combination With Alternative Tobacco Product (Cig+ATP) Compared With Those Who Use Cigarettes Only

Cigarette+ATP (n = 1220) Cigarette only (n = 1156) P a
Demographics
 Gender, % male 54.3% 28.7% <.0001
 Age, mean (SD) 40.2 (11.6) 45.9 (12.6) <.0001
 Race, %
  Non-Hispanic white 27.0% 40.4% <.0001
  Non-Hispanic African American 35.7% 31.0%
  Hispanic 37.3% 28.6%
 Education, % college graduate or higher 38.9% 31.5% ns
 Income, % <$1800/mo 39.3% 40.1% ns
Tobacco and alcohol use characteristics
 Smoking status, %
  Nondaily 55.2% 45.7% <.0001
  Daily light (1–10 CPD) 21.2% 27.6%
  Daily heavy (≥11 CPD) 23.6% 26.7%
 Menthol smoker 60.4% 53.9% .001
 Cigarettes per day, mean (SD) 9.3 (8.7) 10.1 (8.5) ns
 Time to first cigarette, % within 30 minutes of waking 59.0% 54.4% ns
 24-hour quit attempts in last 12 months, mean (SD) 5.5 (9.5) 5.9 (11.8) ns
 Price sensitivity
  Price of cigs influenced them to smoke less, % yes 59.5% 55.7% ns
  Price of cigs influenced where they buy cigs, % yes 68.9% 71.5% ns
  Price of cigs influenced the brand they buy, % yes 48.4% 39.4% <.0001
  Buy vs. borrow cigs, % buy all cigs they smoke 56.0% 71.3% <.0001
 Harm reduction
  Trying to cut down on cigs smoke, % yes 70.7% 70.8% ns
  Limit CPD to decrease health risk, % yes 48.9% 43.7% ns
  Limit smoking in last year to decrease health risks, % always or often 29.5% 30.8% ns
 Alcohol
  Alcohol, mean (SD)b 4.6 (3.1) 3.3 (3.0) <.0001
  Alcohol, % alcohol misuse 66.6% 48.8% <.001
Psychosocial
 Depression, mean (SD)c 2.1 (1.8) 1.8 (1.8) <.0001
 Depression, % depressive symptoms 38.0% 29.8% <.0001
 Discrimination frequency, mean (SD)d 8.3 (6.7) 5.9 (5.7) <.0001

CPD = number of cigarettes smoked per day; ns = nonsignificant. A modified version of this table appears in Lei et al.62 The original table was published by BioMed Central.

a P values represent those that are significant after Bonferroni correction, which was applied because of the large sample size and to minimize the likelihood of a Type I error due to multiple testing. Variables with a P value below the corrected Type I error rate of 0.0023 (0.05/22) are considered significant.

bAlcohol Use Disorders Identification Test-Consumption scores range from 0 to 12 with scores of ≥4 for men and ≥3 for women indicating possible alcohol misuse.

cTwo-item Patient Health Questionnaire scores range from 0 to 6 with scores of 3 or higher indicating possible depressive symptoms.

dScores range from 0 to 25 with higher scores indicating greater frequency of discrimination in daily life.