Table 1.
Demographics by Group Category
| Nonsmoker (n = 126) | Conventional (n = 25) | Electronic Cigarette User (n = 79) | Dual User (n = 44) | Overall (n = 274) | P Value | |
|---|---|---|---|---|---|---|
| Sex, n (%) | ||||||
| Female | 81 (64.29%) | 15 (60.00%) | 25 (31.65%) | 18 (41.86%) | 139 (50.81%) | <0.001 |
| Male | 45 (35.71%) | 10 (40.00%) | 54 (68.35%) | 25 (58.14%) | 134 (49.08%) | |
| Total | 126 (100%) | 25 (100%) | 79 (100%) | 43 (100%) | 273 (100%) | |
| Ethnicity, n (%) | ||||||
| African American | 11 (8.94%) | 4 (16.67%) | 2 (2.63%) | 3 (6.82%) | 20 (7.49%) | 0.003 |
| Caucasian | 46 (37.40%) | 13 (54.17%) | 51 (67.11%) | 25 (56.82%) | 135 (50.56%) | |
| East Asian | 29 (23.58%) | 3 (12.50%) | 13 (17.11%) | 5 (11.36%) | 50 (18.73%) | |
| Hispanic | 28 (22.76%) | 4 (16.67%) | 6 (7.89%) | 5 (11.36%) | 43 (16.10%) | |
| Other | 9 (7.32%) | 0 (0.00%) | 4 (5.26%) | 6 (13.64%) | 19 (7.12%) | |
| Total | 123 (100%) | 24 (100%) | 76 (100%) | 44 (100%) | 267 (100%) | |
| Age, yr, mean (SD) | 29.4 (13.6) | 28.5 (8.3) | 31.8 (11.4) | 30.5 (12.2) | 30.2 (12.3) | 0.519 |