Click on the links below to view different characteristics of Epiville. Then, click on the various situations to view various selection procedures and their effects. View: Income Smoking Insurance All Select controls and cases for: Situation 1 Situation 2 Situation 3

Situation 3: Epiville General Hospital cases come from the source population around the hospital. Controls selected from the admissions office with diagnoses of cancer other than cancer under study and not related to our exposure or with diagnoses of noncancer diseases.