An EM algorithm for proportional odds ordinal regression with outcome-dependent nonignorable missing responses is proposed, simulated, and applied to a Phase III psoriasis trial.
Evaluating methods for handling missing ordinal data in structural equation modeling.Behavior Research Methods2019; 51(5): 2337–2355
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Cumulative Logit Ordinal Regression with Proportional Odds under Nonignorable Missing Response -- Application to Phase III Trial
An EM algorithm for proportional odds ordinal regression with outcome-dependent nonignorable missing responses is proposed, simulated, and applied to a Phase III psoriasis trial.