Missing data: new Stat-JR functionality to support analyses of incomplete datasets
24 November 2016
New Stat-JR functionality to support analyses of incomplete datasets.
There are now three principal Stat-JR templates available to support handling missing data in multilevel generalised linear models; these use two different approaches.
The first two templates use ‘multiple imputation’ which is a widely used procedure that will handle a large number of models: a 2-level (2LevelImpute; available since 2014) and a new N-level (NLevelImpute) version are now available.
The second (one pass) approach is a more recent generalisation with a more robust theoretical justification (see Goldstein et al, 2014 for further details); this has been implemented in the new 2LevelMissingOnePass template.
To use these templates, you will first need to install Stat-JR (http://www.bristol.ac.uk/cmm/
software/statjr/order-statjr/) , and then download the zipped file containing the templates from CMM's missing data page (http://www.bristol.ac.uk/cmm/ research/missing-data/).
Goldstein, H., Carpenter, J. R. and Browne, W. J. (2014), Fitting multilevel multivariate models with missing data in responses and covariates that may include interactions and non-linear terms. Journal of the Royal Statistical Society: Series A (Statistics in Society). 177(2), 553-564 doi: 10.1111/rssa.12022