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61. HCUP Nationwide Inpatient Sample Design Report 1997
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1997_Design_Report.jsp
    January 01, 1997 - Zero-Weight Hospitals Beginning in 1993, the NIS samples contain no zero-weight hospitals. … The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … The number of hospitals in the NIS hospital samples that continue across multiple sample years is shown … Potthoff, Woodbury, and Manton 4 ) have been developed to draw inferences using weights from complex samples

62. Introduction To The HCUP Nationwide Ambulatory Surgery Sample (pdf file)
    hcup-us.ahrq.gov/db/nation/nass/NASSIntroduction2021.pdf
    April 01, 2024 - Introduction To The HCUP Nationwide Ambulatory Surgery Sample HEALTHCARE COST AND UTILIZATION PROJECT — HCUP A FEDERAL-STATE-INDUSTRY PARTNERSHIP IN HEALTH DATA Sponsored by the Agency for Healthcare Research and Quality INTRODUCTION TO THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2021 …

63. HCUP Nationwide Inpatient Sample Design Report 1996
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1996_Design_Report.jsp
    January 01, 1996 - Zero-Weight Hospitals Beginning in 1993, the NIS samples contain no zero-weight hospitals. … The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … The number of hospitals in the NIS hospital samples that continue across multiple sample years is shown … Potthoff, Woodbury, and Manton 4 ) have been developed to draw inferences using weights from complex samples

64. HCUP_methods_series_cover.ai (pdf file)
    hcup-us.ahrq.gov/reports/methods/2005_03_del_379.pdf
    January 01, 2005 - Both the NIS and NHDS are samples, and statistics derived from them are estimates. … The report cautions that estimates cannot be expected to be identical when two different samples are … These include: • Random variation between the two samples • Differences in sampling strategies … Considering all of these possible reasons for significant differences among the samples, data analyses … The NIS and NHDS samples aligned closely across most age groups, gender, and payer categories.

65. C:\HCUP\NIS_1997_Design_Report.wpd (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1997_Design_Report.pdf
    January 01, 1997 - . 30 November 1999 Design of the NIS, 19979 Zero-Weight Hospitals Beginning in 1993, the NIS samples … The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … The number of hospitals in the NIS hospital samples that continue across multiple sample years is shown … of the NIS, 199718 and Manton4) have been developed to draw inferences using weights from complex samples

66. HCUP Nationwide Inpatient Sample Design Report 1993
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1993_Design_Report.jsp
    January 01, 1993 - The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … 128 128 85 TOTAL 2,348 2,168 913 The number of hospitals in the NIS hospital samples … Potthoff, Woodbury, and Manton 2 ) have been developed to draw inferences using weights from complex samples

67. HCUP Nationwide Inpatient Sample Design Report 1995
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1995_Design_Report.jsp
    January 01, 1995 - The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … The number of hospitals in the NIS hospital samples that continue across multiple sample years is shown … Potthoff, Woodbury, and Manton 4 ) have been developed to draw inferences using weights from complex samples

68. HCUP Nationwide Inpatient Sample Design Report 1994
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1994_Design_Report.jsp
    January 01, 1994 - The two samples can be combined to form a single, generalizable 20 percent subsample of discharges. … The number of hospitals in the NIS hospital samples that continue across multiple sample years is shown … Potthoff, Woodbury, and Manton 4 ) have been developed to draw inferences using weights from complex samples

69. Calculating Variances Using the 1999 Nationwide Inpatient Sample (pdf file)
    hcup-us.ahrq.gov/reports/methods/2015-09.pdf
    January 01, 2015 - Prior to the 2012 NIS, the samples included all discharges from a sample of hospitals in the sampling … Starting with the 2012 NIS, the discharge samples are self-weighted, meaning that the discharge weight … superpopulation (stochastic) model, procedures have been developed to draw inferences using weights from complex samples

70. HCUP Methods Series Calculating National Inpatient Sample (NIS) Variances for Data Years 2012 and Later
    hcup-us.ahrq.gov/reports/methods/2015_09.jsp
    January 01, 2015 - Prior to the 2012 NIS, the samples included all discharges from a sample of hospitals in the sampling … Starting with the 2012 NIS, the discharge samples are self-weighted, meaning that the discharge weight … superpopulation (stochastic) model, procedures have been developed to draw inferences using weights from complex samples

71. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2006
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2006.jsp
    January 01, 2006 - However, these NIS samples were not designed to yield a representative sample of hospitals at the State … The two samples could be combined to form a single, generalizable 20% subsample of discharges. … an equal probability of selection for the sample, regardless of whether they appeared in prior NIS samples … This deviates from the procedure used for earlier samples, which maximized the longitudinal component … For a description of zero-weight hospitals in the 1988-1992 samples, refer to the special report: Design

72. Figure 5: Number of Hospitals Sampled, by Year
    hcup-us.ahrq.gov/figures/5_05.jsp
    January 01, 2005 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Year Regular Sample of Hospitals Total Sample of Hospitals 2005 1,054 (no value) 2004 1,004 (no value) 2003 994 (no value) 2002 995 (no value) 2001 986 (no …

73. Figure 5: Number of Hospitals Sampled, by Year
    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…

74. Figure 5: Number of Hospitals Sampled, by Year
    hcup-us.ahrq.gov/figures/nis_figure5_2008.jsp
    January 01, 2008 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Years Regular Sample Hospitals Total Sample Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913   1994 …

75. Figure 5: Number of Hospitals Sampled, by Year
    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) …

76. Figure 5: Number of Hospitals Sampled, by Year
    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…

77. Figure 5: Number of Hospitals Sampled, by Year
    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…

78. Figure 5: Number of Hospitals Sampled, by Year
    hcup-us.ahrq.gov/figures/nis_figure5_2010.jsp
    January 01, 2010 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Years Regular Sample Hospitals Total Sample Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913   1994 …

79. Figure 5: Number of Hospitals Sampled, by Year
    hcup-us.ahrq.gov/figures/nis_figure5_2013.jsp
    January 01, 2013 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Years Regular Sample Hospitals Total Sample Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913   1994 …

80. Figure 5: Number of Hospitals Sampled, by Year
    hcup-us.ahrq.gov/figures/nis_figure5_2012.jsp
    January 01, 2012 - Figure 5: Number of Hospitals Sampled, by Year Figure 5: Number of Hospitals Sampled, by Year Years Regular Sample Hospitals Total Sample Hospitals 1988 758 759 1989 875 882 1990 861 871 1991 847 859 1992 838 856 1993 913   1994 …