veloped cirrhosis in their lifetime. What is the odds ratio of being a drinker compared to being a non-drinker?Select one:a. 3.21b. 2.78c. 9.85d. 1.19

Investigators wish to examine if hepatitis B infection is a confounder or an effect modifier for the relationship between drinking and liver cirrhosis. In order to examine these relationships, they enrolled 275 drinkers and 209 non-drinkers in a cohort study. Of those who drink, 183 developed cirrhosis during their lifetime. Of the 209 non-drinkers, only 80 developed cirrhosis in their lifetime. What is the odds ratio of being a drinker compared to being a non-drinker?Select one:a. 3.21b. 2.78c. 9.85d. 1.19

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