The following are several files from HLM, MLwiN, and SAS for the sparse data design. The files are as follows: HLM Simspar3.dat - Visit Level Data Simspar2.dat - Patient Level Data Simspar1.dat - Doctor Level Data Sparse.rsp - Response file to create the HLM ssm file. You will need to change the directory names in this file. Sparse.hlm - The command file to run the model. SAS You will need the glimmix macro for these programs to run. Simspar.sd2 - Sas dataset (PC) for sparse data design Sparmql.sas - Program file for running the mql model Sparpql.sas - Program file for running the pql model Sparmqlr.sas - Program file for running the mql model, restricted likelihood Sparpqlr.sas - Program file for running the pql model, restricted likelihood MLwiN Simsparw.ws - MLwiN worksheet. There aren't any command files associated with this file. To run the models, do the following steps. After opening the data file, click on the Equations window option under the Window menu. If you click on estimates at the bottom of the window twice, you will get the results from the first order pql model. To rerun this model, click the start button. To change the nonlinear options, click on the nonlinear button to change approximation (mql or pql), order of approximation, and other options. To change between restricted and full estimation, click on estimation control. After changing options, click on start to get results for the new model.