This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Framingham Hea study is an example of 
Select and explain. 
A. Case control study, B. Coho study, C. Cross sectional study, D. Interventional study
B: Coho study
Answer: B: Coho study 
Explanation: Framingham hea study is an example of a coho study.Initiated in 1948, to study the relationship of a number of risk factors to the subsequent development of cardiovascular disease.The study showed an increased risk of CHD with increasing serum cholesterol levels in 45-54 age group.Risk factors have been found to include male sex, advancing age, high serum lipid concentrate, high blood pressure, cigarette smoking, diabetes mellitus, obesity, low vital capacity and ceain ECG abnormalities.Park 23e pg: 80