《英文msh词典》Study,Epidemiologic
[入口词] Study,Epidemiologic
[主题词] Epidemiologic Studies
[英文释义] Studies designed to examine associations,commonly,hypothesized causal relations. They are usually concerned with identifying or measuring the effects of risk factors or exposures. The common types of analytic study are CASE-CONTROL STUDIES; COHORT STUDIES; and CROSS-SECTIONAL STUDIES.