The National Assessment of Educational Progress (NAEP) uses latent trait item response models to summarize performance of students on assessments of educational proficiency in different subject areas ...

This is a preview. Log in through your library . Abstract We present a framework for generating multiple imputations for continuous data when the missing data mechanism is unknown. Imputations are ...

Missing data are a frequently encountered problem in epidemiologic and clinical research.1, 2 One approach is to include in the analysis only those participants without missing observations (complete ...

The Centre for Multilevel Modelling has a long-standing interest in developing methods and software to aid researchers in handling missing data. As discussed below, we have developed functionality in ...