Table 2
Means (SEMs) for study outcomes
| Omni | Own cigarette | |
|---|---|---|
| *p<0.05. | ||
| CO, carbon monoxide; cr, creatinine; SEM, standard error of the mean; SOC, stage of change. | ||
| Cigarettes/day | 31 (2) | 30 (2) |
| Butts returned | 27 (2) | 26 (2) |
| Number of puffs | 11.6 (0.5)* | 12.7 (0.7) |
| Volume/puff (ml) | 49 (2) | 50 (2) |
| Total puff volume (ml) | 547 (25)* | 612 (34) |
| CO boost (ppm) | +4.8 (0.5)* | +4.0 (0.5) |
| Craving/factor 1 | 4.8 (0.2) | 4.6 (0.2) |
| Craving/factor 2 | 2.9 (0.2) | 2.9 (0.2) |
| Total withdrawal discomfort | 7.7 (0.9) | 7.9 (0.9) |
| Total cotinine (ng/ml/cr) | 4178 (400)* | 5096 (484) |
| Total nicotine | 2853 (319) | 3295 (366) |
| Total NNAL (pmol/mg/cr) | 2.9 (0.3) | 3.5 (0.4) |
| 1-HOP (pmol/mg/cr) | 1.5 (0.2) | 1.7 (0.1) |
