Katharine Hammond's research is cited in Smoke Free Society's efforts to urge parents to observe National Parents' Day by quitting smoking.
According to Dr. Hammond's study, non-smokers receive the following equivalents of cigarette smoking:
In the non-smoking section of a restaurant = 1.5 cigarettes
In a pack-a-day smoker's home = three cigarettes
In a smoky bar for two hours = four cigarettes
Riding in a car one hour with a smoker = four cigarettes