Table 2.

Smoking parameters, 1986 BAT study (means ± SD)

Cigarette typePuff numberPuff volume (mL)Mouth hold (s)Inhaled volume (mL)Exhaled volume (mL)Inhalation time (s)Exhalation time (s)Breath hold (s)
>10 mg tar yield (n = 11)9.4 ± 2.944.9 ± 12.30.49 ± 0.27702 ± 437577 ± 3291.19 ± 0.292.01 ± 0.760.45 ± 0.48
<10 mg tar yield (n = 8)12.1 ± 5.644.5 ± 10.90.65 ± 0.39636 ± 138655 ± 1951.22 ± 0.372.89 ± 0.720.45 ± 0.57

NOTE: http://tobaccodocuments.org/bat_cdc/8652.html. Similar smoking parameters were observed in subjects grouped according to cigarette tar yields with a cutoff of 10-mg tar.