Additional File 1.In this file we present sample codes for a few of the models presented in the paper. The estimation mostly has been done in SAS, while the graphing (and some model-fitting) has been done in R. Format: DOC Size: 192KB Download file This file can be viewed with: Microsoft Word Viewer Siadaty et al. BMC Medical Research Methodology 2004 4:27 doi:10.1186/1471-2288-4-27 |