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Baseline characteristics of participants by trial arm
| Intervention N = 20 | Control N = 20 | |
| Age years Mean (SD) | 32.5 (12.6) | 36.5 (10.9) |
| Gender N (%) female | 10 (50%) | 11 (55%) |
| Cigs/day Mean (SD) | 18 (7) | 20 (10) |
| FTND Mean (SD) | 4.9 (2.2) | 5.4 (2.4) |
| Baseline CO ppm Mean (SD) | 23 (18) | 29 (9) |
1 Fagerstrom Test for Nicotine Dependence[24], scored 0 (least dependent) to 10 (most dependent)
