Comparison of measured puff topography with previous studies (parenthesis indicate 95% CIs unless otherwise stated)
| Session length, minute | Smoke drawn, litres | No of puffs | Puff duration, seconds | Puff volume, mL | Interpuff interval, seconds | |
| Natural environment | ||||||
| Jawad et al (current study) | 46.9 (44.9 to 49.0) | 214 (197 to 232) | 290 (266 to 315) | 2.9 (2.7 to 3.1) | 790 (730 to 860) | 7.6 (6.9 to 8.3) |
| Katurji et al 26 | 64.0 (55.6 to 72.4) | 130 (109 to 151) | 220 (186 to 254) | 2.8 (2.6 to 3.1) | 626 (538 to 714) | 17.4 (14.4 to 20.4) |
| Shihadeh et al 35 | 55.9 | 91 | 171 | 2.6 | 530 | 17.0 |
| Shihadeh16 | 50.6 | 30 | 100 | 3.0 | 300 | 30.0 |
| Clinical laboratory | ||||||
| Alzoubi et al 36—male only | 31.1 (4.4)* | 99 (55)* | 176 (69)* | 2.7 (1.1)* | 570 (280)* | 10.1 (6.9)* |
| Alzoubi et al 36—female only | 30.7 (2.4)* | 77 (51)* | 180 (95)* | 2.4 (0.9)* | 440 (230)* | 10.2 (5.7)* |
| Blank et al 37 | 45.0 | 57 (46)* | 66 (42)* | 3.9 (1.5)* | 906 (517)* | 47.5 (21.0)* |
| Cobb et al 38 | 45.0 | 62 (5)† | 84.9 (6.4)† | – | 834 (65.7)† | 35.4 (2.7)† |
| Maziak et al 39 | 33.1 (13.1)* | 86 | 169 (100)* | 3.2 (1.2)* | 511 (333)* | 12.6 (5.9)* |
*SD.
†SE of the mean.