Source:http://linkedlifedata.com/resource/umls/id/C0002783
MSH: 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.,NCI: The study of human populations to identify causes of disease and factors determining and influencing the frequency and distribution of disease, injury, and other health related events.