Some strata were sampled at a rate of 80% or more to account for small sample sizes, expected response rate, and possible VSP ineligibility. There were 39 primary strata based on geography and VSP types, and samples were drawn independently from each stratum. The sample was also designed to produce sub-national estimates based on Census regions (South, West, Midwest, and Northeast). This includes the 10 largest states based on population size (California, Texas, Florida, New York, Illinois, Pennsylvania, Ohio, Georgia, North Carolina, and Michigan) as well as Virginia, Indiana, Missouri, and Colorado. The NSVSP sample was selected using a single-stage stratified design to produce estimates for the nation as a whole and for the 14 U.S. After removing the ineligible and duplicate VSPs from the roster, 11,879 VSPs were left in the NSVSP sample frame, from which 7,237 VSPs were sampled. Informal and for-profit VSPs were considered ineligible for the NSVSP. The final NCVSP frame included 12,196 organizations in the United States that served victims as their primary function or with dedicated staff or programs. Using the 2017 National Census of Victim Service Providers (NCVSP) as the known universe of victim service providers (VSPs), the 2019 National Survey of Victim Service Providers (NSVSP) is the first follow-up survey that aims to collect detailed information on (1) services provided to crime victims, (2) staffing, and (3) organizational constraints to providing services from a nationally representative sample of victim service providers.
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