All are disadvantages of Coho study except
Disadvantages of coho study Time consuming and Expensive Attrition - loss of follow up Hawthorne bias Ethical issues Not useful in rare disease Disadvantages of case control study Calculation of Odds ratio (Relative risk - more accurate than OR) Recall bias
Coho study involve a large number of people
Coho studies are expensive
Recall bias
Attrition
Classification, Coho Study