QuickStats: Percentage of Adults Aged 20-64 Years with Periodontitis, by Smoking Status and Sex -- National Health and Nutrition Examination Survey, US, 1988-1994 and 1999-2004
From the Morbidity and Mortality Weekly Review.
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5809a6.htm?s_cid=mm5809a6_e

