%0 Journal Article
%T Predicting the Effect of a Predictor When Controlling for Baseline
%A Bo Melin
%A Kimmo Sorjonen
%A Michael Ingre
%J Educational and Psychological Measurement
%@ 1552-3888
%D 2019
%R 10.1177/0013164418822112
%X The present simulation study indicates that a method where the regression effect of a predictor (X) on an outcome at follow-up (Y1) is calculated while adjusting for the outcome at baseline (Y0) can give spurious findings, especially when there is a strong correlation between X and Y0 and when the test¨Cretest correlation between Y0 and Y1 is relatively weak. Researchers wishing to avoid spurious findings and Type 1 errors should be aware of this phenomenon and are recommended to verify found effects by an unadjusted effect of X on the Y1¨CY0 difference
%K adjusting for baseline
%K correlation
%K follow-up
%K regression effect
%K Type 1 error
%U https://journals.sagepub.com/doi/full/10.1177/0013164418822112