Elderly Americans are less likely than young Americans to have secondhand smoke. Only 31.6% of Americans age 60 and over have serum cotinine (a product of nicotine breakdown) levels greater than or equal to 0.05 ng/mL, while 53.6% of Americans ages 3 to 11 have this amount present.
Elderly Americans are less likely than young Americans to have secondhand smoke. Only 31.6% of Americans age 60 and over have serum cotinine (a product of nicotine breakdown) levels greater than or equal to 0.05 ng/mL, while 53.6% of Americans ages 3 to 11 have this amount present.