How to understand coefficients that reverse sign when you start controlling for things?
Statistical Modeling, Causal Inference, and Social Science 2013-05-26
Summary:
Denis Cote writes: Just read this today and my unsophisticated statistical mind is confused. “Initial bivariate analyses suggest that union membership is actually associated with worse health. This association disappears when controlling for demographics, then reverses and becomes significant when controlling for labor market characteristics.” From my education about statistics, I remember to be suspicious [...]
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