TABLE 3—

Percentage of US Lifetime Nonsmokers Exposed to SHS by Level of Cigarette Excise Tax and Per Capita Sales of Cigarette Packs: NHANES 1999–2004

Characteristic	SHS Exposure, % (SE)	P
Cigarette excise tax, $		.214
< 0.15	46.5 (3.0)
0.15– < 0.25	36.2 (5.2)
≥ 0.25	39.7 (3.5)
Cigarette sales (packs/person/mo)		< .001
< 10.5	25.3 (4.1)
10.5– < 12	43.2 (3.6)
≥ 12	50.5 (2.5)

Note. NHANES = National Health and Nutrition Examination Survey; SHS = secondhand smoke. The sample size was n = 3137.