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Health Services Research (HSR) Methods
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Dummy Variable
Related Terms: Regression Analysis

A dummy variable is a binary form of a categorical or non-numeric variable. By transforming the initial variables into dummy variables (typically with values equal to 0 or 1) the effects of each of the levels of the original variable may be included in a regression model.

Further Reading
Gliner, J.A. and G.A. Morgan. 2000. Research Methods in Applied Settings, Mahwah, NJ: Lawrence Erlbaum Associates.

University of Glasgow. Statistics Glossary. Available at http://www.stats.gla.ac.uk/steps/glossary/alphabet.html .