Table 1.
Demographic, Clinical, and Tobacco Use Variables at Wave 1 Baseline (N=32 320)
| Variables | Weighted Percentage |
|---|---|
| Myocardial infarction | |
| Yes | 2.4 |
| Tobacco use | |
| E‐cigarette user | |
| Never | 85.0 |
| Former | 12.6 |
| Some day | 1.4 |
| Every day | 1.0 |
| Cigarette smoker | |
| Never | 34.3 |
| Former | 46.9 |
| Some day | 3.8 |
| Every day | 15.0 |
| Dual usersa | 69.0% |
| Demographic | |
| Age in y, mean (±SD) | 46.7 (17.9±SD) |
| Body mass index (±SD) kg/m2 | 28.0 (7.5±SD) |
| Sex | |
| Men | 48.1 |
| Women | 51.9 |
| Poverty level/income | |
| Below poverty (<100% of poverty guideline) | 25.2 |
| Race/ethnicity | |
| White alone | 77.8 |
| Black alone | 12.4 |
| Asian alone | 5.5 |
| Other, including multiracial | 4.3 |
| Education | |
| Less than high school | 4.5 |
| High school or equivalent | 36.6 |
| Some college and associate | 31.0 |
| Bachelor and advanced degree | 27.9 |
| High blood pressure | |
| Yes | 27.8 |
| High cholesterol | |
| Yes | 23.0 |
| Diabetes mellitus | |
| Yes | 14.0 |
a
Current (every day+some day) dual users=current cigarette smoker used e‐cigarette at Wave 1/current e‐cigarette user at Wave 1.