Sociodemographic characteristics of participants
| n (%) | |
| Sex | |
| Male | 206 (45.4) |
| Female | 326 (54.6) |
| Age (years) | |
| 18–24 | 26 (3.1) |
| 25–34 | 93 (16.2) |
| 35–44 | 93 (17.4) |
| ≥45 | 320 (63.3) |
| Race/ethnicity | |
| Non-Hispanic white | 376 (74.0) |
| Non-Hispanic black | 80 (13.9) |
| Hispanic | 41 (7.4) |
| Other | 35 (4.7) |
| Education level | |
| Less than high school/GED | 141 (25.9) |
| High school graduate | 108 (22.4) |
| Beyond high school | 282 (51.7) |
| Income ($) | |
| <50 000 | 355 (67.5) |
| ≥50 000 | 150 (32.5) |
| Marital status | |
| Married | 208 (40.2) |
| Widowed | 192 (37.4) |
| Never married | 127 (22.4) |
| Relying on friend/family support to quit | |
| No | 285 (56.2) |
| Yes | 246 (43.8) |
| Living with smokers | |
| No | 195 (55.4) |
| Yes | 242 (44.6) |
| Used quitting method (among 532 cigarette-only users in wave 3) | |
| ENDS | 75 (12.3) |
| NRT | 289 (58.5) |
| Medication | 68 (11.8) |
| NRT+medication | 100 (17.4) |
| Mean (SE) | |
| Motivation to quit cigarettes | 8.3 (0.1) |
| Cigarette dependence in wave 3 | 3.2 (0.1) |
| Total | 532 (100.0) |
ENDS, electronic nicotine delivery system; NRT, nicotine replacement therapy.