This RFP requests a Contractor with statistical expertise to conduct the following work as detailed below: development of a data analytic plan in communication with core research team; preparation of the data for analyses (data cleaning); derivation of composite variables and measure scores; compilation and provision to the study team of data dictionaries, variable codes and syntax; execution of analyses; and summaries of results to include text-based descriptions of study findings for summary reports/ publications as well as graphs, charts, and tables.