If you desire to study the incidence of diarrhea in a community which study method would you like to opt for: (A) Cross-sectional study, (B) Coho study, (C) Case control study, (D) Double blind placebo study
Answer is B. The aim of study would be to find risk factors. It is a prospective study.In the coho study, we can determine incidence rates.&;A well-designed coho study is considered the most reliable means of showing an association between a suspected risk factor and subsequent disease"Park 23rd edition pg: 76