Frequently, ordinal measurement scales are constructed either by coarse measurement of interval or ratio scales, or by assigning numeric scores to ordinal categories. When data on such scales are ...

The good news is that you probably don’t need to do the number crunching yourself (hallelujah!) but you do need to correctly understand and interpret the analysis created by your colleagues.

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) ...