Table 2.
Means (SD) for puff topography measures for device by cigarette brand
| Desktopa |
Portablea |
Videoa |
||||
| Own brand | Ultra-light | Own brand | Ultra-light | Own brand | Ultra-light | |
| Topography measure | ||||||
| Puff volume (ml)b | 57.0 (20.1) | 60.3 (20.0) | 44.4 (13.6) | 52.8 (12.6) | n/a | n/a |
| Total puff volume (ml)b | 578.7 (327.2) | 614.2 (301.1) | 411.4 (170.7) | 528.5 (207.2) | n/a | n/a |
| Puff duration (s)b | 1.7 (0.7) | 2.0 (0.8) | 1.7 (0.6) | 1.9 (0.6) | 1.9 (0.8) | 2.1 (0.7) |
| IPI (s) | 18.1 (8.8) | 15.2 (7.2) | 18.2 (7.6) | 16.7 (7.7) | 18.3 (7.5) | 17.8 (9.0) |
| Puff number | 9.7 (3.3) | 10.2 (3.1) | 9.4 (3.0) | 10.1 (3.4) | 9.2 (3.2) | 9.9 (3.1) |
Note. n/a = not applicable; IPI, interpuff interval. Device factors: three (desktop, portable, video) for duration, IPI, and number; two (desktop, portable) for average and total volume.
a
Collapsed across bout.
b
Significant main effect of cigarette brand (F’s > 6.8, p's < .05).