A hypothetical cohort study wants to nd out if there is an association between alcohol consumption and depression. Drinkers were considered those who consumed at least 1 alcoholic beverage a week; individuals who did not drink at least 1 alcoholic beverage were considered nondrinkers. A total of 250 students (diseasefree at baseline} are followed for a single academic year, of whom 75 were considered drinkers. At the end of the academic year, 101 students had been diagnosed with depression; 45 of these students were considered drinkers. What is the exposure? l l What is the outcome? l l