Which of the following is true about coho study?
Disease to risk factor study
Effect to cause study
Not associated with attributable risk
Associated with antecedent causation
A coho study is a paicular form of longitudinal study that samples a coho (a group of people who share a defining characteristic, typically those who experienced a common event in a selected period, such as bih or graduation), performing a cross-section at intervals through time. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 83
Epidemiology