Introduction: We present an ordinal logistic regression model for identification of items with differential item functioning (DIF) and apply this model to a Mini-Mental State Examination (MMSE) ...

Consider a study of the effects on taste of various cheese additives. Researchers tested four cheese additives and obtained 52 response ratings for each additive. Each response was measured on a scale ...

This is the log odds of success to failure for the hth subpopulation. A nice property of the logistic model is that all possible values of in map into (0,1) for . Note that are the odds ratios.