<prompt> Case - control study is a type of -Descriptive epidemiological studyAnalytical studyLongitudinal studyExperimental epidemiological study  <response>: . case control studies are generally called retrospective studiesare used to test casual hypothesis.they are basically comparison studies.cases and controls must be compared with respect to known confounding factorsother kind of analytical studies include coho study. ref;park;s textbook of preventive and social medicine,22 nd edition,pg no 66 