A study examined the association between smoking and emphysema after following 400 smokers and 600 non-smokers for 15 ye
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A study examined the association between smoking and emphysema after following 400 smokers and 600 non-smokers for 15 ye
A study examined the association between smoking and emphysema after following 400 smokers and 600 non-smokers for 15 years. At the conclusion of the study the investigators found a risk ratio = 17. Which of the following would be the correct interpretation of this risk ratio (also called relative risk? Smokers had 17 times the risk of emphysema compared to non-smokers (8) 17% of the emphysema cases in smokers were due to smoking There were 17 more cases of emphysema in the smokers.
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