Table 3. Smoking topography parameters by cigarette type and condition.
| Cigarette type | Condition | Number of puffs | Puff volume (mL) | Total puff volume (mL) | Puff duration (sec.) | Puff velocity (mL/sec.) | Time to smoke (sec.) |
|---|---|---|---|---|---|---|---|
|
| |||||||
| Mean (SD) | |||||||
| RYO (n=34) | NR | 11.0 (5.1) | 53.1 (20.1) | 584 (332) | 1.68 (0.48) | 38.4 (14.3) | 234 (87) |
| ABS | 11.5 (6.0) | 54.4 (24.5) | 633 (382) | 1.60 (0.53) | 42.0 (15.5) | 221 (107) | |
| INT | 12.4 (5.9) | 63.3 (33.4) | 745 (440) | 1.84 (0.69) | 40.7 (16.9) | 241 (92) | |
| PMM (n=23) | NR | 15.3 (6.6) | 61.5 (16.1) | 935 (453) | 1.90 (0.40) | 41.1 (10.4) | 340 (107) |
| ABS | 15.8 (6.4) | 61.9 (17.8) | 947 (357) | 1.90 (0.49) | 40.9 (9.4) | 341 (113) | |
| INT | 14.7 (5.1) | 58.3 (13.6) | 840 (291) | 1.81 (0.28) | 40.2 (11.5) | 330 (114) | |
| FM (n=20) | NR | 13.3 (3.6) | 58.7 (18.2) | 740 (179) | 1.94 (0.48) | 37.8 (12.1) | 312 (69) |
| ABS | 13.1 (3.7) | 53.3 (19.6) | 656 (194) | 1.77 (0.49) | 37.7 (13.8) | 316 (74) | |
| INT | 13.3 (3.9) | 55.7 (20.1) | 694 (198) | 1.87 (0.50) | 37.0 (12.9) | 322 (64) | |
RYO – roll your own; PMM – personal machine made; FM – factory made; NR – No restrictions; ABS – Overnight tobacco abstinence (12h, exhaled CO≤12ppm); INT – intense smoking; Mean (SD) – arithmetic mean with standard deviation