Complete case analysis The simplest method to handle missing covariate data is to omit from the analysis participants with any missing data (i.e., perform an analysis of available or complete data ...

The data collection services of the centre are suited to cooperation in assessment and research, as well as to other projects focused on data collection. We also collaborate in the collection of ...

A subjective rating or ranking questionnaire is generally easy for subjects to understand and can therefore be a simpler method for gathering data than other means.