Incidence rate is measured by-
Coho study is also known as incidence study Features of coho study: Coho identified prior to the disease under investigation Study group so defined are observed over a period of time to determine the frequency of disease among them Study proceeds forward from cause to effect (pg no : 75 park 23 rd edition)
Case control study
Coho study
Cross sectional study
Cross over study
Epidemiology