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Case-Control Studies
Case Control Studies; Case-Compeer Studies; Case-Referrent Studies; Case Base Studies; Case Comparison Studies; Case Compeer Studies; Case Control Study; Case Referent Studies; Case Referrent Studies; Case-Base Study; Case-Comparison Study
Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.