Table 1.
Demographics
| Characteristic | N | % |
|---|---|---|
| Age ( M , SD ) | 34.9, 10.8 | |
| Sex | ||
| Female | 32 | 39.5 |
| Male | 46 | 56.8 |
| Ethnicity | ||
| Hispanic/Latino | 2 | 2.5 |
| Not Hispanic/Latino | 71 | 87.7 |
| Race | ||
| Asian | 1 | 1.2 |
| Native Hawaiian / Pacific Islander | 0 | 0 |
| Black / African American | 2 | 2.5 |
| White / European American | 74 | 91.4 |
| More than one race | 1 | 1.2 |
| Regular ECIG use duration | ||
| Less than a month | 0 | 0.0 |
| 1–5 months | 8 | 9.4 |
| 6–12 months | 30 | 35.3 |
| Between 1 and 2 years | 21 | 24.7 |
| More than 2 years | 26 | 30.6 |
| ECIG use in past 30 days | ||
| 1–5 days | 0 | 0 |
| 6–10 days | 2 | 2.4 |
| 11–20 days | 6 | 7.1 |
| 21–29 days | 3 | 3.6 |
| All 30 days | 73 | 86.9 |
| ECIG use times per day | ||
| Less than five times a day | 5 | 5.9 |
| Between 6 and 15 times a day | 30 | 35.3 |
| Between 16 and 25 times a day | 28 | 32.9 |
| More than 25 times a day | 22 | 25.9 |
| Nicotine concentration | ||
| Zero (0mg /0mL) | 5 | 5.9 |
| Low (less than 8mg/ 0.08mL) | 49 | 57.7 |
| Medium (between 8mg/ 0.08mL and 16mg / 1.6mL) | 17 | 20.0 |
| High (more than 16mg / 1.6mL) | 6 | 7.1 |
| Not sure | 8 | 9.4 |
| ECIG type | ||
| Prefilled | 3 | 3.5 |
| Drip feed from bottle | 38 | 44.7 |
| Tank feed | 43 | 50.6 |
| Lifetime cigarette use | ||
| No | 4 | 4.8 |
| Yes | 80 | 95.2 |
| Cigarette use past 30 days | ||
| None | 72 | 84.7 |
| 1–5 days | 9 | 10.6 |
| 6–10 days | 1 | 1.2 |
| 11–20 days | 1 | 1.2 |
| 21–29 days | 1 | 1.2 |
| All 30 days | 1 | 1.2 |
| Other tobacco use past 30 days | ||
| No | 78 | 91.8 |
| Yes | 7 | 8.2 |
ECIG = electronic cigarette. Regular use was left to the interpretation of participants given there is currently no standardized measure of ECIG use.