Comparison of measured toxicant content with previous studies (parenthesis indicate 95% CIs unless otherwise stated)
| Tar, mg | Total particulate matter, mg | CO, mg | Nicotine, mg | Benzo[a]pyrene, ng | Formaldehyde, ng | Expired CO, ppm | |
| Natural environment | |||||||
| Jawad et al (current study) | – | 1910 (1710 to 2100) | 259 (228 to 291) | 5.0 (4.2 to 5.8) | 117 (97 to 137) | 198 (175 to 220) | 45.3 (39.0 to 51.7) |
| Katurji et al 26 | 640 (521 to 759) | 1193 (970 to 1416) | 150 (124 to 176) | 4.8 (3.7 to 5.9) | – | – | – |
| Clinical laboratory | |||||||
| Alzoubi et al 36 —male only | – | – | – | – | – | – | 60.0 (39.6)* |
| Alzoubi et al 36—female only | – | – | – | – | – | – | 46.8 (37.4)* |
| Blank et al 37 | – | – | – | – | – | – | 27.9 (2.6)† |
| Cobb et al 38 | – | – | – | – | – | – | 84.4 |
| Maziak et al 39 | – | – | – | – | – | – | 31.5 (32.7) |
| Smoking machine | |||||||
| Markowicz et al 12 | – | 1870 (310)* | 254 (29)* | – | – | – | – |
| Shihadeh et al 15 | – | 1150 (450)† | 190 (60)* | – | – | – | – |
| Shihadeh et al 14 | 464 (159)* | 770 (228)* | 155 (49)* | 1.0 (0.3)* | 51.8 (12.9)* | – | – |
| Apsley et al 20 | – | – | – | 0.3 (0.2–0.6)‡ | BDL | – | – |
| Schubert et al 10 21 | 949 (27)§ | 2710 (7.5)§ | 367 (9)§ | 7.8 (5.1)§ | – | 55.6–111‡ | – |
| Monzer et al 13 | – | 774.7 (210.8)† | 57.2 | – | 169.7 | – | – |
| Saleh and Shihahdeh9 and Sepetdjian et al 31 | 1180–2860‡ | 99–241‡ | 5.2–6.1‡ | 307 (20)§ | – | – | |
| Shihadeh and Saleh11 and Al Rashidi et al 32 | 802 | 1380 (1287 to 1473) | 143 (132 to 154) | 3.0 (2.8 to 3.2) | – | 102.7 (16.3)* | – |
| Shihadeh16 | 242 | – | – | 2.3 | – | – | – |
| Cigarette | |||||||
| Hoffman and Hoffman40 | – | 10–23‡ | 1.0–3.0‡ | 20–40‡ | 70–100‡ | – | |
| Liu et al 41 | 9.4 | 11 | 12.0 | 0.73 | – | – | – |
| Tarrant et al 42 | – | – | – | – | 6.6 | – | – |
| Intorp et al 43 | – | – | – | – | – | 20.6 | – |
*SD.
†SE of the mean.
‡Range.
§Relative SD.
BDL: below detection limit; CO, carbon monoxide.