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  1. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1997RECLWT.txt
    November 12, 1999 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  2. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1995RECLWT.txt
    February 12, 1998 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  3. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1994RECLWT.txt
    December 06, 1996 - 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  4. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1996RECLWT.txt
    February 12, 1998 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  5. hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_1998.pdf
    January 01, 1998 - GA GHA: An Association of Hospitals & Health Systems Confidentiality of Hospitals The sample … 1998 3 HI Hawaii Health Information Corporation Confidentiality of Hospitals The sample … Confidentiality of Hospitals Sources of NIS Data and State-Specific Restrictions 1998 4 The sample … SC South Carolina State Budget & Control Board Confidentiality of Hospitals The sample … TN Tennessee Hospital Association Confidentiality of Hospitals The sample of Tennessee hospitals
  6. hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_1999.pdf
    January 01, 1999 - GA GHA: An Association of Hospitals & Health Systems Confidentiality of Hospitals The sample … 1999 3 HI Hawaii Health Information Corporation Confidentiality of Hospitals The sample … restrictions MO Hospital Industry Data Institute Confidentiality of Hospitals The sample … SC South Carolina State Budget & Control Board Confidentiality of Hospitals The sample … TN Tennessee Hospital Association Confidentiality of Hospitals The sample of Tennessee hospitals
  7. hcup-us.ahrq.gov/HCUP_Overview/HCUP_Overview/index508.jsp
    October 01, 2022 - Sample Size The NIS contains a sample of over 7 million hospital discharge records taken from more … the Nationwide Inpatient Sample. … " Inpatient Sample (NIS). … Sample The NIS is a sample of discharges while the SID includes all discharges from all or nearly all … Sample vs.
  8. hcup-us.ahrq.gov/db/nation/kid/tools/stats/KID_2009_MaskedStats_Hospital.PDF
    January 01, 2009 - hospital discharges, 20 years old or younger 4,024 97 0.04 100.00 15.38 13.89 S_BRTH_U : Number of sample … births in KID_STRATUM 4,121 0 178.00 108,374.00 21,633.54 26,777.95 S_CHLD_U : Number of sample pediatric … non-births in KID_STRATUM 4,121 0 878.00 353,233.00 42,376.31 65,089.32 S_CMPB_U : Number of sample … complicated births in KID_STRATUM 4,121 0 140.00 87,817.00 16,643.25 21,244.10 S_DISC_U : Number of sample … hospitals in KID_STRATUM 4,121 0 12.00 229.00 95.83 55.14 S_UNCB_U : Number of sample uncomplicated
  9. hcup-us.ahrq.gov/news/exhibit_booth/hcup_90_min_pres.jsp
    December 01, 2022 - Nationwide Ambulatory Surgery Sample (NASS) Generate national and regional estimates of major … Design The NIS approximates a 20 percent stratified sample of discharges from all hospitals … Slide 29 KID Sample Design Starting HCUP Database The KID is drawn from … Design The KID is a systematic random sample design, 10 percent uncomplicated births and 80 … Design The NRD is a 100 percent sample of discharges from the SID, after certain discharge
  10. hcup-us.ahrq.gov/figures/5_01.jsp
    Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Year Number of Hospitals Total Number of Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913 (no value) 1994…
  11. hcup-us.ahrq.gov/figures/5_02.jsp
    Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Year Number of Hospitals Total Number of Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913 (no value) 1994…
  12. hcup-us.ahrq.gov/figures/5_04.jsp
    January 01, 2004 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Year Number of Regular Hospitals Total Number of Hospitals 2004 1,004 (no value) 2003 994 (no value) 2002 995 (no value) 2001 986 (no value) 2000 994 (no va…
  13. hcup-us.ahrq.gov/figures/5_03.jsp
    Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Year Number of Regular Hospitals Total Number of Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913 (no value) …
  14. hcup-us.ahrq.gov/reports/infographics/SAMSHA_opioids.pdf
    January 18, 2022 - Infographic - More Opioid-Related Emergency Visits, No Change in Illicit Drug Use Treatment This Is a Sample … for Healthcare Research and Quality, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample … and Nationwide Emergency Department Sample, 2017. 2014 177.7 18.3% 2015 *Change not statistically
  15. hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2020_Hospital.PDF
    January 01, 2020 - Number of universe hospitals in NRD_STRATUM 2,539 0 3.00 352.00 84.65 56 214,930 S_DISC_U : Number of sample … discharges in NRD_STRATUM 2,539 0 3,750.00 1,259,548.00 233,111.50 101,616 591,870,098 S_HOSP_U : Number of sample … November 23, 2022 8 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 23, 2022 9 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 23, 2022 10 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample
  16. hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2019_Hospital_V2.PDF
    January 01, 2019 - Number of universe hospitals in NRD_STRATUM 2,507 0 5.00 351.00 87.66 65 219,773 S_DISC_U : Number of sample … discharges in NRD_STRATUM 2,507 0 3,168.00 1,425,462.00 260,649.49 132,395 653,448,281 S_HOSP_U : Number of sample … November 30, 2022 8 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 30, 2022 9 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 30, 2022 10 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample
  17. hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2021_Hospital.PDF
    January 01, 2021 - Number of universe hospitals in NRD_STRATUM 2,505 0 4.00 359.00 86.64 61 217,028 S_DISC_U : Number of sample … discharges in NRD_STRATUM 2,505 0 3,020.00 1,403,374.00 236,463.82 110,789 592,341,861 S_HOSP_U : Number of sample … December 29, 2023 8 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … December 29, 2023 9 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … December 29, 2023 10 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample
  18. hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2022_Hospital.PDF
    January 01, 2022 - Number of universe hospitals in NRD_STRATUM 2,505 0 4.00 367.00 88.10 62 220,690 S_DISC_U : Number of sample … discharges in NRD_STRATUM 2,505 0 2,670.00 1,383,293.00 237,058.74 115,261 593,832,135 S_HOSP_U : Number of sample … November 4, 2024 8 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 4, 2024 9 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … November 4, 2024 10 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample
  19. hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2000.pdf
    January 01, 2000 - GA GHA: An Association of Hospitals & Health Systems Confidentiality of Hospitals The sample … ethnicity HI Hawaii Health Information Corporation Confidentiality of Hospitals The sample … IL Illinois Health Care Cost Containment Council Confidentiality of Hospitals The sample … restrictions MO Hospital Industry Data Institute Confidentiality of Hospitals The sample … VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  20. hcup-us.ahrq.gov/db/nation/kid/kid_2006_introduction.jsp
    January 01, 2006 - Hospital Sample Design Design Considerations The overall design objective was to select a sample … In some instances, strata were collapsed for sample weight calculations. … summarize the final KID sample. … hospitals, and sample discharges. … "KID Sample Hospitals" lists the hospitals selected for the KID.