Through its data linkage program, NCHS has been able to expand the analytic utility of the data collected from the 2021 National Ambulatory Medical Care Survey (NAMCS) by augmenting it with mortality data from the National Death Index (NDI). Linkage of NAMCS data with the NDI mortality data provides the opportunity to conduct a vast array of outcome studies designed to investigate the association of a wide variety of health factors with mortality.
