Dealing with Separation in Logistic Regression Models

@inproceedings{Rainey2015DealingWS,
  title={Dealing with Separation in Logistic Regression Models},
  author={Carlisle Rainey},
  year={2015}
}
When facing small numbers of observations or rare events, political scientists often encounter separation, in which explanatory variables perfectly predict binary events or non-events. In this situation, maximum likelihood provides implausible estimates and the researcher might want incorporate some form of prior information into the model. The most sophisticated research uses Jeffreys’ invariant prior to stabilize the estimates. While Jeffreys’ prior has the advantage of being automatic, I… CONTINUE READING
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