Table 3

Average past 30-day estimates of toxicant exposures attributable to waterpipe tobacco smoking (WTS) and cigarette smoking among US adults aged 18–30 years

ToxicantWTS*Cigarette smoking*Proportion attributable to WTS†
Smoke volume, L31.78 (10.54)24.67 (2.50)54.87 (37.54 to 72.20)
Tar, mg264.83 (102.71)1007.13 (199.52)20.83 (6.47 to 35.18)
Carbon monoxide, mg84.54 (31.56)727.85 (61.66)10.33 (3.34 to 17.33)
Nicotine, mg1.77 (0.48)74.58 (11.54)2.36 (0.91 to 3.82)
  • *Means and SD derived from Monte Carlo analyses with 5000 repetitions.

  • †95% CIs constructed using SD from 5000 repetitions.