Gifford, JaniceHorton, NickCobb, GeorgeBerry, Katharine Fischer2011-02-162011-02-162011-02-162007-06-29http://hdl.handle.net/10166/616en-USmissing datagastric bypass surgeryhierarchical loglinear modelsimputing valuesThe Effect of Missing Data in the Analysis of a Bariatric Surgery ProgramThesispublic