Table 1.
Group Characteristics
| Water (N = 53) |
IQOS (N = 52) |
p | |
|---|---|---|---|
| Demographics and background | |||
| Age (years) | 29.5 (0.6) | 27.7 (0.6) | .03 |
| Education (years) | 13.5 (0.2) | 13.2 (0.2) | .27 |
| Sexb (Percent male) | 26 (49.1%) | 25 (48.1%) | .99 |
| Race | .47 | ||
| White | 27 (51%) | 20 (39%) | - |
| Black | 16 (30%) | 22 (42%) | - |
| Other | 10 (19%) | 10 (19%) | - |
| Sexual Orientation | |||
| Percent Heterosexual/Straight | 37 (70%) | 44 (81.5%) | .28 |
| Beck Depression Inventory | 8.8 (1.0) | 11.1 (1.1) | .14 |
| Spielberger Trait Anxiety (t-score) | 59.7 (0.7) | 60.0 (0.6) | .75 |
| Alcohol drinks/week | 13.1 (2.2) | 9.5 (1.6) | .19 |
| Smoking patterns and use | |||
| Days smoked (of past 28 days) | 27.7 (0.2) | 27.9 (0.1) | .42 |
| Cigarettes smoked per smoking day | 9.7 (0.7) | 10.1 (0.7) | .71 |
| FTCD (nicotine dependency, 0-10) | 3.4 (0.3) | 3.9 (0.3) | .23 |
| Hours since last reported cigarettea | 4.3 (0.7) | 4.7 (0.6) | .34 |
| CO (ppm)a | 14.8 (1.4) | 15.2 (1.4) | .89 |
| Previous ENDS use | .47 | ||
| Naïve ENDS user (never used ENDS) | 10 (19%) | 11 (21%) | - |
| Lifetime ENDS user (no past month use) | 23 (43%) | 25 (48%) | - |
| Current ENDS user (past month use) | 20 (38%) | 16 (31%) | - |
| Other tobacco use in the past year: | |||
| Hookah | 9 (17%) | 16 (31%) | .10 |
| Cigars | 17 (32%) | 15 (29%) | .63 |
| Other (Smokeless, Pipe, Cloves, etc) | 8 (15%) | 7 (13%) | .81 |
| Baseline Urge and Desire Ratings | |||
| BQSUc | 38.8 (1.8) | 40.6 (1.7) | .46 |
| Regular Cigarette desired | 51.1 (3.4) | 48.8 (3.0) | .61 |
| Vape Pen/Mod desired | 12.3 (3.0) | 10.3 (2.4) | .62 |
| JUUL desired | 9.7 (2.8) | 10.1 (2.7) | .90 |
Note.
Values are Mean (SEM) or N (%), as indicated. Variables were compared between groups with Student’s t-test or chi-square as appropriate.
a
CO and hours since last reported cigarette values are medians due to non-normal distribution, and compared via Mann-Whitney U test.
b
Participant’s biological sex.
c
Total score range:10-70.
d
Range: 0-100. CO = carbon monoxide; ENDS = electronic nicotine delivery systems; FTCD = Fagerström Test for Cigarette Dependence; BQSU = Brief Questionnaire of Smoking Urges.