a study wants to evaluate the effect of an anti-inflammatory diet on the risk of developing coronary heart disease. it enrolled 1560 participants without coronary heart disease (aged 40 years or older) and will follow them for 40 years. the diet of the participants is being assessed with a food frequency questionnaire and then they will be classified as having a pro-inflammatory diet or anti-inflammatory diet. over the 40 year study period, the incidence of coronary heart disease will be evaluated and compared between the two different diet groups. Question : a. Which type of cohort study is it? b. How could you turn this study into a clinical trial? Which other factors would you need to consider



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