Table 1. Participant Characteristics of e-Cigarette Ever-Users.
| Characteristic (No. of responses) | Ever-users, No. (%) | ||
|---|---|---|---|
| Total (n = 2167) | Underage (age <21 y) (n = 1442) | Young adults ( age ≥21 y) (n = 725) | |
| Age, mean (SD), y (n = 2167) | 19.17 (2.3) | 17.51 (2.7) | 22.44 (2.9) |
| Sex (n = 2166) | |||
| Male | 723 (33.4) | 399 (27.7) | 324 (44.7) |
| Female | 1397 (64.5) | 1006 (69.8) | 391 (53.9) |
| Other/nonbinary | 46 (2.1) | 36 (2.5) | 10 (1.4) |
| LGBTQ (n = 2166) | 438 (20.2) | 329 (22.8) | 109 (15.0) |
| Race/ethnicity (n = 2167) | |||
| African American/Black | 319 (14.7) | 179 (12.4) | 140 (19.3) |
| Asian/Pacific Islander, non-Hispanic | 146 (6.7) | 84 (5.8) | 62 (8.6) |
| Hispanic | 416 (19.2) | 262 (18.2) | 154 (21.2) |
| White, non-Hispanic | 1102 (50.9) | 806 (55.9) | 296 (40.8) |
| Other/multiracial | 184 (8.5) | 111 (7.7) | 73 (10.1) |
| Past 30-d use of e-cigarettes (n = 1992) | 1086 (54.5) | 663 (49.6) | 423 (64.5) |
| Past 7-d use of e-cigarettes (n = 1988) | 913 (46.0) | 539 (40.4) | 374 (57.1) |
| No. of times any e-cigarette was used (n = 1932) | |||
| 1-2 | 472 (24.4) | 331 (25.5) | 141 (22.2) |
| 3-10 | 432 (22.4) | 284 (21.9) | 148 (23.3) |
| 11-19 | 210 (10.9) | 124 (9.6) | 86 (13.5) |
| 20-30 | 208 (10.8) | 132 (10.2) | 76 (11.9) |
| 31-99 | 183 (9.5) | 117 (9.0) | 66 (10.4) |
| ≥100 | 427 (22.1) | 309 (23.8) | 118 (18.7) |
| Nicotine dependent (HONC score ≥1) (n = 2167) | 1331 (61.4) | 883 (61.2) | 448 (61.8) |
| Adhering to stay-at-home mandate (n = 2093) | 1693 (80.9) | 1090 (78.9) | 603 (84.6) |
| Friends adhering to stay-at-home mandate (n = 1812) | 1086 (59.9) | 633 (53.3) | 453 (72.5) |
Abbreviation: HONC, Hooked on Nicotine Checklist; LGBTQ, lesbian, gay, bisexual, transgender, queer.