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81. Healthcare Cost and Utilization Project (HCUP) NRD Notes
    hcup-us.ahrq.gov/db/vars/aweekend/nrdnote.jsp
    August 01, 2015 - General Notes   An indicator of whether the admission day is on the weekend (AWEEKEND) is calculated … If AWEEKEND cannot be calculated (ADATE is missing or invalid), then AWEEKEND is missing (.) if ADATE

82. C (pdf file)
    hcup-us.ahrq.gov/reports/methods/2010_05.pdf
    January 01, 2010 - There is no sampling error associated with this calculated ALOS. … standard deviation of length of stay, which would be the true population standard deviation, also calculated … For example, the population ALOS might be estimated based on the ALOS calculated from the lengths of … Rather, it is meant to emphasize the specificity of the population for which the statistics are calculated … However, each ALOS is specific to the year for which it was calculated.

83. Facts and Figures Exhibit 5.1
    hcup-us.ahrq.gov/reports/factsandfigures/2008/exhibit5_1.jsp
    January 01, 2008 - * Calculated using resident population for July 2008 from the U.S. … Costs are calculated from charges using cost-to-charge ratios calculated from hospital-reported Medicare

84. Filespecifications Neds 2012 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2012_IP.TXT
    January 01, 2012 - discharge date NEDS 2012 IP 6 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2012 IP 9 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

85. Filespecifications Nedsv2 2011 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDSv2_2011_IP.TXT
    January 01, 2011 - discharge date NEDS 2011 IP 6 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2011 IP 9 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

86. Filespecifications Neds 2011 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2011_IP.TXT
    January 01, 2011 - discharge date NEDS 2011 IP 6 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2011 IP 9 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

87. Healthcare Cost and Utilization Project (HCUP) KID Notes
    hcup-us.ahrq.gov/db/vars/adaywk/kidnote.jsp
    September 01, 2008 - Values State Specific Notes General Notes   Admission day of the week (ADAYWK) is calculated … If ADAYWK cannot be calculated (ADATE is missing or invalid), then: ADAYWK is set to the supplied

88. Healthcare Cost and Utilization Project (HCUP) NEDS Notes
    hcup-us.ahrq.gov/db/vars/los_ip/nedsnote.jsp
    May 01, 2015 - General Notes   Length of stay for the inpatient hospitalization (LOS_IP) is calculated … LOS_IP is missing (.) if the length of stay cannot be calculated.

89. State Variation in Inpatient Stays Involving Sepsis, 2021 (pdf file)
    hcup-us.ahrq.gov/reports/statbriefs/sb310-state-variation-sepsis-2021.pdf
    January 01, 2021 - Percentage of inpatient stays related to sepsis The percentage of inpatient stays related to sepsis was calculated … The percentage of inpatient stays related to sepsis involving COVID-19 was calculated as follows: … hospital costs The percentage of aggregate hospital costs attributable to sepsis inpatient stays was calculated … charges were imputed using the average total hospital charges for the Diagnosis Related Group (DRG) calculated … The in-hospital mortality rate per 100 sepsis stays involving COVID-19 was calculated as follows: ■

90. Filespecifications Neds 2013 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2013_IP.TXT
    January 01, 2013 - discharge date NEDS 2013 IP 8 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2013 IP 11 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

91. Filespecifications Neds 2010 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2010_IP.TXT
    January 01, 2010 - discharge date NEDS 2010 IP 8 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2010 IP 11 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

92. Filespecifications Neds 2009 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2009_IP.TXT
    January 01, 2009 - discharge date NEDS 2009 IP 8 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2009 IP 11 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

93. Filespecifications Neds 2014 Ip
    hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2014_IP.TXT
    January 01, 2014 - discharge date NEDS 2014 IP 8 DRG_NOPOA 3 Num DRG in use on discharge date, calculated … discharge date NEDS 2014 IP 11 MDC_NOPOA 2 Num MDC in use on discharge date, calculated

94. HCUP_methods_series_cover.ai (pdf file)
    hcup-us.ahrq.gov/reports/methods/2005_05.pdf
    January 01, 2005 - The adjusted rate was calculated as follows (and subsequently multiplied by 100,000): . … The estimates for the numerator, S*, and its standard error, SES*, were calculated in similar fashion … We calculated the observed rate as follows: .000,1000,1 1 1 N S w xw R n i i n i ii ⋅=⋅= … We calculated the directly adjusted rate: .ˆ000,1 ˆ ˆ 000,1A )( 1 , )( 1 ,,36 1 ,36 1 , )( … We calculated the test statistic and (two-sided) p-value: )Prob(*2 2 2 2 1 21 tZp SESE RRt >

95. C:\unzipped\Methods Series Reports to Convert\Comparison_Report_NIS4 1995.wpd (pdf file)
    hcup-us.ahrq.gov/reports/methods/Comparison_Report_NIS41995Final.pdf
    December 21, 1998 - Most statistics calculated from the NIS are consistent with those from the NHDS, particularly those for … NIS statistics were mainly compared with those calculated from these two data sources: 1. … Statistics calculated from the NHDS do have sampling error. … For NHDS statistics, standard errors were calculated as described in the Appendix. … The standard errors were calculated as follows.

96. Microsoft Word - CaseforPOAIndicator_final_060806 _2_.doc (pdf file)
    hcup-us.ahrq.gov/reports/methods/2006_7.pdf
    January 01, 2006 - The adjusted rate was calculated as follows (and subsequently multiplied by 100,000): . … The estimates for the numerator, S*, and its standard error, SES*, were calculated in similar fashion … We calculated the observed rate as follows: .000,1000,1 1 1 N S w xw R n i i n i ii ⋅=⋅= … We calculated the directly adjusted rate: .ˆ000,1 ˆ ˆ 000,1A )( 1 , )( 1 ,,36 1 ,36 1 , )( … We calculated the test statistic and (two-sided) p-value: )Prob(*2 2 2 2 1 21 tZp SESE RRt >

97. Methods Applying AHRQ Quality Indicators to Healthcare Cost and Utilization Project (HCUP) Data for the Tenth (2012) NHQR and NHDR (pdf file)
    hcup-us.ahrq.gov/reports/methods/2012-02.pdf
    January 01, 2012 - For a benchmark to be calculated, rates for at least 30 States needed to be available. … Volume measure PDI 7 (pediatric heart surgery) is also not calculated. … Volume measures IQI 1 to 7 are not calculated. … **Calculated using Kaiser Family Foundation, statehealthfacts.org. … The adjusted rate was calculated as follows (and subsequently multiplied by 100,000): .

98. Figure 9: Percentage of U.S. Population in 2011 NIS States, by Region
    hcup-us.ahrq.gov/figures/nis_figure9_2013.jsp
    January 01, 2013 - Population in 2011 NIS States, by Region Calculated using the estimated U.S. population on July 2,

99. Stataload Neds 2011 Ip
    hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2011_IP.Do
    January 01, 2011 - version used on discharge date" ; label var drg_nopoa "DRG in use on discharge date, calculated … MDC in effect on discharge date" ; label var mdc_nopoa "MDC in use on discharge date, calculated

100. Stataload Neds 2011V2 Ip
     hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2011v2_IP.Do
     February 25, 2015 - version used on discharge date" ; label var drg_nopoa "DRG in use on discharge date, calculated … MDC in effect on discharge date" ; label var mdc_nopoa "MDC in use on discharge date, calculated