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. 2019 Dec 23;21(Suppl 1):S128–S132. doi: 10.1093/ntr/ntz159

Table 1.

Participant Characteristics (N = 1712)

Control group (n = 855) VLNC group (n = 857)
n % n %
Gender
 Female 473 55.3 481 56.1
 Male 383 44.7 376 43.9
Gay, lesbian, or bisexual 78 9.1 80 9.4
Hispanic 78 9.1 88 10.3
Race
 American Indian or Alaskan Native 19 2.3 14 1.7
 Asian 28 3.3 28 3.3
 Black or African American 92 10.9 76 9.0
 Native Hawaiian or Pacific Islander 8 1.0 2 .2
 White 673 79.9 701 83.4
 Other 22 2.6 20 2.4
Education
 High school graduate or less 271 31.7 277 32.5
 Some college 271 31.7 251 29.5
 College graduate or associate’s degree 263 30.8 267 31.3
 Graduate degree 49 5.7 57 6.7
Household income, annual
 $0–$24,999 233 27.3 249 29.1
 $25,000–$49,999 282 33.0 284 33.1
 $50,000–$74,999 166 19.4 153 17.9
 $75,000+ 174 20.4 171 20.0
Low income, <200% of 2018 federal poverty level 423 49.7 419 49.2
E-cigarette use
 Current smoker only 407 47.6 430 50.2
 Dual current e-cigarette user and smoker 448 52.4 427 49.8
In past year, bought cigarettes from a …
 Web site 92 10.8 92 10.8
 Street vendor 148 17.3 135 15.8
 Store on an Indian reservation 190 22.3 200 23.4

The mean age in the control group was 43 years (SD: 14 years) and the mean age in the VLNC group was 45 years (SD: 15 years). Missing demographic data range from 0% to 1.7%. Participant characteristics did not differ by experimental condition (all p > .05). SD = standard deviation.