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The Stata Journal
Volume 7 Number 2: pp. 221-226

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predict and adjust with logistic regression

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Amsterdam, The Netherlands
Abstract.   Within Stata there are two ways of getting average predicted values for different groups after an estimation command: adjust and predict. After OLS regression (regress), these two ways give the same answer. However, after logistic regression, the average predicted probabilities differ. This article discusses where that difference comes from and the consequent subtle difference in interpretation.
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