Table 2.
Patterns of e-cigarette use in the total sample and by gender, N = 1815.
| Total sample 1815 (100) | Male 1212 (66.8%) | Female 603 (33.2%) | ||||
|---|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | χ 2 | p | Cramer's V | |
| Time since started using e-cigarettes | 7.97 | .090 | ||||
| Less than 1 month ago | 126 (6.9) | 92 (7.6) | 34 (5.6) | |||
| 1-6 months ago | 711 (39.2) | 477 (39.4) | 234 (38.8) | |||
| 6-12 months ago | 410 (22.6) | 281 (23.2) | 129 (21.4) | |||
| 12-24 months ago | 296 (16.3) | 198 (16.3) | 98 (16.3) | |||
| More than 2 years ago | 272 (15.0) | 164 (13.5) | 108 (17.9) | |||
| Frequency of use of e-cigarettes | 2.01 | .330 | ||||
| 1-9 times a day | 554 (30.5) | 357 (29.5) | 197 (32.7) | |||
| 10-20 times a day | 730 (40.2) | 499 (41.2) | 231 (38.3) | |||
| More than 20 times a day | 531 (29.3) | 356 (29.4) | 175 (29.0) | |||
| How often do you use e-cigarettes? | 0.16 | .690 | ||||
| Daily | 1721 (94.8) | 1151 (95.0) | 570 (94.5) | |||
| Non-daily | 94 (5.2) | 61 (5.0) | 33 (5.5) | |||
| Type of e-cigarettes used | 18.51 | .001 | 0.01 | |||
| Non-disposable | 1781 (98.1) | 1201 (99.1) | 580 (96.2) | |||
| Disposable | 34 (1.9) | 11 (0.9) | 23 (3.8) | |||
| What flavor of e-cigarette do you use the most? | 6.74 | .009 | 0.06 | |||
| Non-tobacco | 1503 (82.8) | 984 (81.2) | 519 (86.1) | |||
| Tobacco | 312 (17.2) | 228 (18.8) | 84 (13.9) | |||
| Concentration or strength of nicotine in your e-cigarette | 33.39 | .001 | 0.14 | |||
| 0 mg | 50 (2.8) | 21 (1.7) | 29 (4.8) | |||
| Low: 4-8 mg | 381 (21.0) | 258 (21.3) | 123 (20.4) | |||
| Medium: 9-16 mg | 658 (36.3) | 453 (37.4) | 205 (34.0) | |||
| High: 16-24 mg | 584 (32.2) | 404 (33.3) | 180 (29.9) | |||
| Extra high: more than 24 mg | 42 (2.3) | 27 (2.2) | 15 (2.5) | |||
| Other | 100 (5.5) | 49 (4.1) | 51 (8.5) | |||
| Generation of e-cigarettes | ||||||
| First generation | 190 (10.5) | 104 (8.6) | 86 (14.3) | 13.87 | .001 | 0.09 |
| Second generation | 1112 (61.3) | 773 (63.8) | 339 (56.2) | 9.70 | .002 | 0.07 |
| Where do you get information about e-cigarettes? | ||||||
| Online | 1640 (90.4) | 1127 (93.0) | 513 (85.1) | 28.93 | .001 | 0.13 |
| Friends/family | 551 (30.4) | 330 (27.2) | 221 (36.7) | 16.91 | .001 | 0.10 |
| Tv/media advertisement | 58 (3.2) | 27 (2.2) | 31 (5.1) | 11.05 | .001 | 0.08 |
| Gas stations/cigarette stores | 49 (2.7) | 20 (1.7) | 29 (4.8) | 15.30 | .001 | 0.09 |
| Where do you buy your e-cigarette supplies? | ||||||
| Online | 1531 (84.4) | 1074 (88.6) | 457 (75.8) | 50.19 | .001 | 0.17 |
| Gas stations/cigarette stores | 105 (5.8) | 50 (4.1) | 55 (9.1) | 18.44 | .001 | 0.10 |
| Read and/or participate in online forums discuss e-cigarettes? (yes) | 1527 (84.1) | 1074 (88.6) | 453 (75.1) | 54.89 | .001 | 0.17 |
| Use e-cigarette in places where smoking tobacco are not allowed? | ||||||
| Home (yes) | 1448 (79.8) | 993 (81.9) | 455 (75.5) | 10.46 | .001 | 0.08 |
| Work (yes) | 895 (49.3) | 664 (54.8) | 231 (38.3) | 43.74 | .001 | 0.16 |