Baseline characteristics
| Control group n (%)* | Active group n (%)* | Overall | |
|---|---|---|---|
| *Unless otherwise indicated; IQR, interquartile range. | |||
| Female | 497 (58.3) | 500 (58.7) | 997 (58.5) |
| Age (median (IQR)) | 22 (19–29) | 22 (19–30) | 22 (19–30) |
| Age group (years) | |||
| 16–19 | 304 (35.6) | 31.3 (36.7) | 617 (36.2) |
| 20–29 | 353 (41.4) | 327 (38.4) | 680 (39.9) |
| 30+ | 195 (22.9) | 212 (24.9) | 407 (23.9) |
| Income level (NZ$) | |||
| <15000 | 215 (25.2) | 221 (25.9) | 436 (25.6) |
| 15–30000 | 349 (40.9) | 364 (42.7) | 713 (41.8) |
| >30000 | 274 (32.1) | 256 (30.1) | 540 (31.1) |
| Did not answer | 15 (1.8) | 11 (1.3) | 26 (1.5) |
| Ethnicity | |||
| Maori | 179 (21.0) | 176 (20.7) | 355 (20.8) |
| Pacific | 29 (3.4) | 31 (3.6) | 60 (3.5) |
| European | 544 (63.8) | 530 (62.2) | 1074 (63.0) |
| Other | 101 (11.8) | 115 (13.5) | 216 (12.7) |
| No cigarettes/day (median (IQR)) | 15 (10–20) | 15 (10–20) | 15 (10–20) |
| Fagerstrom score (median (IQR)) | 5 (3–6) | 5 (3–6) | 5 (3–6) |
| Roll your own cigarettes | 181 (21.2) | 188 (22.1) | 369 (21.6) |
| No times tried to quit (median (IQR)) | 2 (1–4) | 2 (1–4) | 2 (1–4) |
| Nicotine replacement therapy use | |||
| Ever | 222 (26.0) | 244 (28.6) | 466 (27.3) |
| Current | 9 (1.1) | 9 (1.1) | 18 (1.1) |
| Nicobrevin use | |||
| Ever | 25 (2.9) | 36 (4.2) | 61 (3.6) |
| Current | 0 (0) | 1 (0.1) | 1 (0.1) |
| Bupropion use | |||
| Ever | 14 (1.6) | 18 (2.1) | 32 (1.9) |
| Current | 0 (0) | 1 (0.1) | 1 (0.1) |
| Quitline use | |||
| Ever | 86 (10.1) | 83 (9.7) | 169 (9.9) |
| Current | 8 (0.9) | 4 (0.5) | 12 (0.7) |
| Other quit aids use | |||
| Ever | 33 (3.9) | 32 (3.8) | 65 (3.8) |
| Current | 1 (0.1) | 3 (0.4) | 4 (0.2) |
| Any quit aid or product in current use | 17 (2.0) | 18 (2.1) | 35 (2.1) |