Table 2 Underreporting of non-study cigarette use by study group at weeks 2 and 6
| Â | Investigational Cigarettes (mg/g nominal nicotine content) | |||||
|---|---|---|---|---|---|---|
Group | 15.8 | 5.2 | 2.3 | 1.3 | 0.4 | 0.4 high tar |
Week 2 | ||||||
Self-reported mean non-study CPD (SD) | 0.51 (1.586) | 1.26 (2.508) | 1.94 (3.876) | 2.22 (4.601) | 2.01 (3.895) | 2.05 (4.340) |
Estimated mean non-study CPD (SD) | NA | 10.85 (25.211) | 10.71 (11.073) | 13.51 (14.255) | 16.51 (21.986) | 11.98 (13.471) |
Underreported non-study CPD | – | 9.59 | 8.77 | 11.29 | 14.50 | 9.93 |
Underreporting (%) | – | 88 | 81.9 | 83.6 | 87.8 | 82.9 |
Week 6 | ||||||
Self-reported mean non-study CPD (SD) | 0.41 (1.198) | 0.92 (2.466) | 1.81 (3.967) | 1.63 (4.164) | 1.35 (3.454) | 1.94 (5.046) |
Estimated mean non-study CPD (SD) | NA | 10.04 (9.053) | 12.72 (12.005) | 15.36 (14.247) | 15.10 (13.874) | 13.15 (12.294) |
Underreported non-study CPD | Â | 9.12 | 10.91 | 13.73 | 13.75 | 11.21 |
Underreporting (%) | – | 90.8 | 85.8 | 89.4 | 91.1 | 85.2 |