Secondary data sources for public health a practical guide secondary data play an increasingly important role in epidemiology and pub lic health research and practice examples of secondary data sources include national surveys such as the brfss and nhis claims data for the medicare and medicaid systems and public vital statistics records. Secondary data play an increasingly important role in epidemiology and public health research and practice examples of secondary data sources include national surveys such as the brfss and nhis claims data for the medicare and medicaid systems and public vital statistics records although a wealth of secondary data is available it is not always easy to locate and access appropriate data to . Secondary data play an increasingly important role in epidemiology and public health research and practice examples of secondary data sources include national surveys such as the brfss and nhis claims data for the medicare and medicaid systems and public vital statistics records. Secondary data sources for public health a practical guide practical guides to biostatistics and epidemiology sarah boslaugh secondary data analysis plays an increasingly important role in epidemiology and public health research and practice but many difficulties confront researchers and analysts who wish to use secondary data to address a research or policy question. Secondary data sources for public health book read reviews from worlds largest community for readers secondary data play an increasingly important rol