Baseline sample characteristics by condition
| Condition | Totals | ||
|---|---|---|---|
| Treatment | Control | ||
| Number of participants | 171 | 180 | 351 |
| (All figures below are expressed as percentages of total sample) | |||
| Age (years) | |||
| 18–25 | 7.6 | 7.2 | 7.4 |
| 26–39 | 39.8 | 36.7 | 38.2 |
| 40–55 | 44.4 | 52.2 | 48.4 |
| 56–70 | 7.6 | 3.9 | 5.7 |
| >70 | 0.6 | 0 | 0.3 |
| Sex | |||
| Male | 46.8 | 48.9 | 47.9 |
| Female | 53.2 | 50.6 | 51.9 |
| Missing data | 0 | 0.6 | 0.3 |
| Race/ethnicity | |||
| White | 79.5 | 84.4 | 82.1 |
| African American | 8.2 | 5.0 | 6.6 |
| Hispanic | 4.7 | 3.9 | 4.3 |
| Native American/Indian | 1.2 | 2.8 | 2.0 |
| Other | 5.3 | 1.7 | 3.4 |
| Missing data | 1.2 | 2.2 | 1.7 |
| Cigarettes per day | |||
| <16 | 31.9 | 38.6 | 35.3 |
| 16–20 | 36.8 | 28.1 | 32.3 |
| 21–30 | 20.2 | 24.0 | 22.2 |
| 31+ | 11.0 | 9.4 | 10.2 |
| Time to first cigarette | |||
| <30 mins | 62.6 | 61.4 | 62.0 |
| 30–60 mins | 25.8 | 17.5 | 21.6 |
| >60 mins | 11.7 | 21.1 | 16.5 |
| Currently preparing to quit? | |||
| Yes | 65.5 | 68.3 | 67.0 |
| No | 29.8 | 26.7 | 28.2 |
| Missing data | 4.7 | 5.0 | 4.8 |
| No. of previous quit attempts | |||
| None | 7.6 | 3.9 | 5.7 |
| 1–2 | 36.3 | 35.0 | 35.6 |
| 3–4 | 26.9 | 26.7 | 26.8 |
| 4–5 | 8.2 | 12.8 | 10.5 |
| >5 | 16.4 | 16.7 | 16.5 |
| Missing data | 4.7 | 5.0 | 4.8 |
| Tried nicotine gum? | |||
| No | 50.9 | 51.1 | 51.1 |
| Yes | 39.8 | 45.0 | 42.5 |
| Missing data | 9.4 | 3.9 | 6.6 |
| Tried nicotine patch? | |||
| No | 38.0 | 41.1 | 39.6 |
| Yes | 52.6 | 55.0 | 53.8 |
| Missing data | 9.4 | 3.9 | 6.6 |
| Tried Zyban (bupropion)? | |||
| No | 67.3 | 62.2 | 64.7 |
| Yes | 23.4 | 33.9 | 28.8 |
| Missing data | 9.4 | 3.9 | 6.6 |