HLTH 425: Measures of Association Homework 1. Researchers were conducting a 40-year prospective cohort study to assess the risk of cancer due to cigarette smoking. They recruited 2,000 healthy people into their study. Of the 2,000 people, 500 people reported smoking cigarettes. By the end of the study, 285 of the 500 smokers developed lung cancer. Of the remaining people (1,500 non-smokers), 105 developed lung cancer by the end of the study. Set up your 2x2 table and calculate the relative risk. a. What type of study is this (cohort or case control)? b. Complete the 2x2 table Exposed Nonexposed Disease No Disease c. Calculate the relative risk (RR) and interpret it in a sentence Hint: RR = 1/