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child-resistant packaging 1 ingredient requirements including the prohibition of other active ingredients besides nicotine

At that time, 41% of Americans said they smoked

Effects of dissuasive packaging on young adult smokers

Similar to the results of life expectancy, the all-cancer mortality risk is decreased only in modest drinkers who dont smoke in our subgroup analysis by smoking status, and only significant in lung cancer when viewed individually

Though the study found that smokers were more likely than non-smokers to have lung cancer, and that the prevalence of the disease rose with the quantity smoked, the design of the study still left room for Fishers dreaded confounding problem