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  1. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1997_Design_Report.jsp
    January 01, 1997 - NIS Release Calendar Year States Sample Hospitals Sample Discharge (millions) 1 1988 … of the resultant hospital sample. … to enter the sample. … NIS Hospital Sample Regular Sample Total Sample Year Number of Hospitals Number of … N s (sample) was the number of sample hospitals selected for the NIS in stratum s.
  2. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1993_Design_Report.jsp
    January 01, 1993 - of the resultant hospital sample. … to enter the sample. … NIS Hospital Sample   Regular Sample Total Sample Year Number of Hospitals Number … ) = N s (frame) ÷ N s (sample). … N s (sample) was the number of sample hospitals selected for the NIS in stratum s.
  3. hcup-us.ahrq.gov/tech_assist/sampledesign/508_compliance/index508_2018.jsp
    January 01, 2018 - Sample Strata : The Sample Strata are relatively homogeneous groups from the sample frame. … Sample Unit : The Sample Unit is the level at which we sample within each strata, such as at the discharge … NIS Sample Unit The NIS sample unit is a systematic random sample of discharges stratified by hospital … On the left, you can see a summary of the target universe, sample frame, sample strata, and sample unit … KID Sample Frame : While the NIS is a sample of discharges and the NEDS is a sample of hospitals and
  4. hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2021.jsp
    January 01, 2021 - HCUP National Inpatient Sample (NIS) ABSTRACT The National Inpatient Sample (NIS) is part of the … Rather than first drawing a sample of hospitals and then keeping all discharges from that sample … The systematic sample starting in 2012 is a self-weighted sample design similar to simple random sampling … Rather than first drawing a sample of hospitals and then keeping all discharges from that sample, … The new systematic sample is a self-weighted sample design similar to simple random sampling, but
  5. hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2020.jsp
    January 01, 2020 - HCUP National Inpatient Sample (NIS) ABSTRACT The National Inpatient Sample (NIS) is part of the … First, the sample design was revised to create a sample of discharge records from all HCUP-participating … Rather than first drawing a sample of hospitals and then keeping all discharges from that sample, in … Rather than first drawing a sample of hospitals and then keeping all discharges from that sample, in … The new systematic sample is a self-weighted sample design similar to simple random sampling, but it
  6. hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2017.jsp
    January 01, 2017 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … On the basis of the set of NASS sample hospitals and universe totals, sample weights are computed that … Computation of sample weights is straightforward. … universe to sample encounter volumes so that the sample volume is inflated to agree with the universe … NASS Target Universe, Sampling Frame, and Final Sample Characteristics, 2017 Sample Description
  7. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2009.jsp
    January 01, 2009 - The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20% sample contains over 29 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  8. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2016.jsp
    January 01, 2016 - ) and N s (sample) were the number of hospital-owned EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide
  9. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2011.jsp
    January 01, 2011 - The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20% sample contains 29 million records … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  10. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2010.jsp
    January 01, 2010 - The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20% sample contains over 29 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  11. hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2016.jsp
    January 01, 2016 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … On the basis of the set of NASS sample hospitals and universe totals, sample weights are computed that … Computation of sample weights is straightforward. … universe to sample encounter volumes so that the sample volume is inflated to agree with the universe … NASS Target Universe, Sampling Frame, and Final Sample Characteristics, 2016 Sample Description
  12. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2017.jsp
    January 01, 2017 - ) and N s (sample) were the number of hospital-owned EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide
  13. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2015.jsp
    January 01, 2015 - ) and N s (sample) were the number of hospital-owned EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide
  14. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2012.jsp
    January 01, 2012 - ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains 31 million … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS)) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  15. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2014.jsp
    January 01, 2014 - ) and N s (sample) were the number of hospital-owned EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide
  16. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2008.jsp
    January 01, 2008 - The main objective of a stratified sample is to ensure that the sample is representative of the target … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users given that a 20% sample contains over 28 million records … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  17. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2019.jsp
    January 01, 2019 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in their … The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in their … and N s (sample) were the number of hospital-owned EDs within stratum s in the universe and sample, … A larger sample would be cumbersome for data users, given that a 20-percent sample contains about 30 … ED visit information from a sample of EDs HCUP Nationwide Emergency Department Sample Nationwide
  18. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2013.jsp
    January 01, 2013 - ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  19. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2007v2.jsp
    November 01, 2015 - The main objective of a stratified sample is to ensure that the sample is representative of the target … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users given that a 20% sample contains over 25 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample
  20. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2006v2.jsp
    November 01, 2015 - The main objective of a stratified sample is to ensure that the sample is representative of the target … ) and N s (sample) were the number of hospital-based EDs within stratum s in the universe and sample … A larger sample would be cumbersome for data users given that a 20% sample contains over 25 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … ED visit information from a sample of hospital-based EDs HCUP Nationwide Emergency Department Sample

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