Table 2.
Participant characteristics by use trajectory group – n(%)/M(SD)
| Characteristic | Overall N = 114 |
Exclusive EC usersa n = 32 |
Dual usersb n = 66 |
Exclusive smokersc n = 16 |
p-value |
|---|---|---|---|---|---|
| Age | 44.6 (12.9) | 44.4 (13.8) | 43.9 (13.0) | 48.0 (10.6) | .517 |
| Gender | .623 | ||||
| Male | 67 (58.8) | 16 (50.0) | 40 (60.6) | 11 (68.8) | |
| Female | 46 (40.4) | 16 (50.0) | 25 (37.9) | 5 (31.3) | |
| Transgender/Gender nonconforming |
1 (0.9) | 0 (0.0) | 1 (1.5) | 0 (0.0) | |
| Yearly household income | $26,923.3 ($26,165.6) | $30,476.6 ($32,599.4) | $26,230.2 ($24,689.5) | $22,346.3 ($15,326.2) | .583 |
| Education | .344 | ||||
| ≤ High school/GED | 63 (55.3) | 21 (65.6) | 33 (50.0) | 9 (56.3) | |
| > High school/GED | 51 (44.7) | 11 (34.4) | 33 (50.0) | 7 (43.8) | |
| Employment status | .485 | ||||
| Full- or part-time | 53 (46.5) | 12 (37.5) | 33 (50.0) | 8 (50.0) | |
| Other | 61 (53.5) | 20 (62.5) | 33 (50.0) | 8 (50.0) | |
| Years smoking | 17.3 (13.1) | 13.6 (12.0) | 16.8 (12.0) | 26.7 (15.7) | .004 |
| Menthol/non-menthol | .975 | ||||
| Non-menthol | 41 (36.0) | 11 (34.4) | 25 (37.9) | 5 (31.3) | |
| Menthol | 64 (56.1) | 18 (56.3) | 36 (54.5) | 10 (62.5) | |
| Both | 9 (7.9) | 3 (9.4) | 5 (7.6) | 1 (6.3) |
Note.
a
Exclusive EC users = exclusive e-cigarette use at week 6 and eCO < 6 ppm;
b
Dual users = dual e-cigarette and cigarette use at week 6;
c
Exclusive smokers = exclusive cigarette smoking at week 6. ANOVAs and Chi-Squared tests were used to test for significant difference between use groups. Bolded values indicate statistically significant omnibus tests. Pairwise comparisons: Significant between group differences emerged in years smoking such that exclusive smokers reported smoking significantly longer than exclusive e-cigarette users and dual users.