Fitting Weighted Multilevel Models to Complex Sample Survey Data in SAS: A Case Study - Dr. Brady T. West, Survey Research Center, Institute for Social Research, University of Michigan-Ann Arbor
Recent advances in statistical software have enabled analysts to fit multilevel models to complex sample survey data, using a framework for estimation and inference that has been in place since the mid-1990s. These advances have included developments in SAS PROC GLIMMIX, where appropriate methods have now been implemented to fit these types of models to survey data from complex samples. This presentation will consider a case study of this type of approach, using PROC GLIMMIX to analyze data from a national survey of HIV providers.
About the Presenter
Brady T. West is a Research Assistant Professor in the Survey Methodology Program, located within the Survey Research Center at the Institute for Social Research on the University of Michigan-Ann Arbor (U-M) campus. He also serves as a Statistical Consultant at the U-M Center for Statistical Consultation and Research (CSCAR). He earned his PhD from the Michigan Program in Survey Methodology in 2011. Before that, he received an MA in Applied Statistics from the U-M Statistics Department in 2002, being recognized as an Outstanding First-year Applied Masters student, and a BS in Statistics with Highest Honors and Highest Distinction from the U-M Statistics Department in 2001. His current research interests include the implications of measurement error in auxiliary variables and survey paradata for survey estimation, survey nonresponse, interviewer variance, and multilevel regression models for clustered and longitudinal data. He is the lead author of a book comparing different statistical software packages in terms of their mixed-effects modeling procedures (Linear Mixed Models: A Practical Guide using Statistical Software, Second Edition, Chapman Hall/CRC Press, 2014), and he is a co-author of a second book entitled Applied Survey Data Analysis (with Steven Heeringa and Pat Berglund), which was published by Chapman Hall in April 2010 and has a second edition slated to be available in late 2016 or early 2017.