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  1. hcup-us.ahrq.gov/reports/natstats/commdx/commdx.htm
    October 01, 1999 - summarized the literature on coding errors for hospital administrative data and described a decline in error … Information on age and sex was most reliable (error rates less than 1 percent), and principal diagnosis … discharges is required to assure, with 95 percent confidence, that the reported proportions had a relative error … of less than 30 percent (i.e., if the reported value is p , the error is <.3 p ).
  2. hcup-us.ahrq.gov/reports/trendtables/HCUPSummaryTrendTables_Methods.xlsx
    December 01, 2022 - equal to 10, representing fewer than two hospitals (State tables only), or with a relative standard error … less than 30, representing fewer than two hospitals (State tables only), or with a relative standard error … than 30, or representing fewer than two hospitals (State tables only), or with a relative standard error … than 30, or representing fewer than two hospitals (State tables only), or with a relative standard error … than 30, or representing fewer than two hospitals (State tables only), or with a relative standard error
  3. hcup-us.ahrq.gov/db/vars/dxccsn/nisnote.jsp
    September 01, 2008 - EAGE05, EDX03   Top     State Specific Notes Massachusetts Due to an error
  4. hcup-us.ahrq.gov/tech_assist/index_stu.jsp
    February 01, 2022 - Flags for ICD-9-CM Software Tools - Utilization Flag for ICD-10-PCS Spotlights (HCUP) Standard Error
  5. hcup-us.ahrq.gov/db/nation/nis/tools/stats/MaskedStats_NIS_2022_Core_Weighted.PDF
    January 01, 2022 - Observations 6578372 Sum of Weights 32891849 Statistics Variable Label N Minimum Maximum Mean Std Error … 25, 2024 2 Means of Continuous Data Elements Statistics Variable Label N Minimum Maximum Mean Std Error … of Mean Sum Std Error of Sum FEMALE Indicator of sex 6,576,958 0.00 1.00 0.5537 0.0011 18,208,318 … of Mean Sum Std Error of Sum PAY1 Primary expected payer (uniform) 6,568,727 1.00 6.00 2.0986 0.0059 … of Mean Sum Std Error of Sum PRDAY22 Number of days from admission to I10_PR22 9,872 -3.00 347.00
  6. hcup-us.ahrq.gov/db/nation/nis/tools/stats/MaskedStats_NIS_2021_Core_Weighted.PDF
    January 01, 2021 - Observations 6666752 Sum of Weights 33333720 Statistics Variable Label N Minimum Maximum Mean Std Error … of Mean Sum Std Error of Sum AGE Age in years at admission 6,666,498 0.00 90.00 49.8089 0.1974 1,660,252,156 … 28, 2023 2 Means of Continuous Data Elements Statistics Variable Label N Minimum Maximum Mean Std Error … of Mean Sum Std Error of Sum ELECTIVE Elective versus non-elective admission 6,656,852 0.00 1.00 … of Mean Sum Std Error of Sum PRDAY9 Number of days from admission to I10_PR9 151,425 -4.00 345.00
  7. hcup-us.ahrq.gov/reports/statbriefs/sb19.jsp
    May 19, 2016 - Note: Statistics based on estimates with a relative standard error (standard error/weighted estimate) … greater than 0.30 or with standard error = 0 are not reliable.
  8. hcup-us.ahrq.gov/db/nation/neds/stats/NEDS_2016_Core_MaskedStats.PDF
    January 01, 2016 - Kurtosis 6.57125856 Uncorrected SS 668838410 Corrected SS 26877854.1 Coeff Variation 20.4617668 Std Error … Kurtosis -0.8979735 Uncorrected SS 7.14507E10 Corrected SS 1.95106E10 Coeff Variation 61.2892499 Std Error … Kurtosis 150.704858 Uncorrected SS 1.15509E15 Corrected SS 7.97252E14 Coeff Variation 149.263329 Std Error
  9. hcup-us.ahrq.gov/reports/factsandfigures/figures/2005/2005_1_3a.jsp
    January 01, 2005 - Exhibit 1.3. Reasons for Hospital Stays Exhibit 1.3. Reasons for Hospital Stays Hospital Stays for Males and Females by Major Reason*, 2005   Male and Female** Male Female Reason for Hospital Stay According to Principal Diagnosis Number of Discharges (in Thousands) Percent of All D…
  10. hcup-us.ahrq.gov/reports/factsandfigures/figures/2005/2005_1_3b.jsp
    January 01, 2005 - Exhibit 1.3. Reasons for Hospital Stays Exhibit 1.3. Reasons for Hospital Stays Hospital Stays for Males and Females by Major Reason*, 2005   Male and Female** Male Female Reason for Hospital Stay According to Principal Diagnosis Number of Discharges (in Thousands) Percent of All D…
  11. hcup-us.ahrq.gov/db/nation/nrd/nrdchecklist.jsp
    November 01, 2024 - Standard error calculations should take into account the stratification (data element NRD_STRATUM) and
  12. hcup-us.ahrq.gov/reports/statbriefs/sb109.pdf
    April 01, 2011 - coded in these hospital and ED data:  ―drug poisoning (overdose or wrong drug given or taken in error … www.hcup-us.ahrq.gov/reports/statbriefs/sb29.pdf 2 overdose of drug, wrong drug given or taken in error … Drug poisoning, which often involves accidental drug overdose, wrong drugs taken or given in error, or … biological substances (includes overdose of these substances and wrong substances given or taken in error … medicinal substances, and biologicals (includes accidental overdose, wrong dose given or taken in error
  13. hcup-us.ahrq.gov/db/vars/aweekend/nisnote.jsp
    September 01, 2008 - From data year 1998 to 2000, there may be an error in AWEEKEND.
  14. hcup-us.ahrq.gov/db/nation/nis/corrections_1998_1999.jsp
    January 01, 1998 - NIS Database Documentation - Corrections 1998-1999 An official website of the Department of Health & Human Services Search All AHRQ Websites Careers Contact Us Espanol FAQs …
  15. hcup-us.ahrq.gov/reports/factsandfigures/figures/2005/2005_2_5a.jsp
    January 01, 2005 - Exhibit 2.5 Circulatory Conditions Exhibit 2.5 Circulatory Conditions Number of Discharges, Percent Distribution, and Rank for the Most Frequent Principal Diagnoses of Circulatory Conditions by Sex, 2005 Principal Diagnosis CCS Condition Category and Name Total* Male Female Discharges…
  16. hcup-us.ahrq.gov/db/vars/aweekend/kidnote.jsp
    September 01, 2008 - From data year 1998 to 2000, there may be an error in AWEEKEND.
  17. 2017-01 (pdf file)

    hcup-us.ahrq.gov/reports/methods/2017-01.pdf
    January 01, 2017 - Standard error calculations should take into account the poststratification weights and clustering of … Output for 30-day All-Cause AMI Readmissions Analytic Sample Software Mean Standard Error Sum Standard … Error All NRD discharges SAS 0.001918 4.1 x 10-5 67,717 1,624.8 Stata 0.001918 4.1 x 10-5 67,717 … Unbiased estimates of error variance then are obtained by comparing the actual values to the predicted
  18. Title: (pdf file)

    hcup-us.ahrq.gov/datainnovations/NWAbstractFinal.pdf
    September 29, 2013 - Title: States: Idaho, Oregon, Washington Title: Improving Data & Enhancing Access—(IDEA) Principal Investigator: Victoria Warren-Mears Organization: Northwest Portland Area Indian Health Board Project Dates: September 30, 2010, to September 29, 2013 Grant Number: R01 HS19972-01 Correctly assessing th…
  19. hcup-us.ahrq.gov/reports/factsandfigures/figures/2005/2005_2_3.jsp
    January 01, 2005 - Exhibit 2.3 Most Frequent Diagnoses by Sex Exhibit 2.3 Most Frequent Diagnoses by Sex Number of Discharges,* Percent Distribution, and Rank of Most Frequent Principal Diagnoses for Inpatient Hospital Stays by Sex, 2005 Principal Diagnosis CCS Condition Category and Name Males Females Numb…
  20. hcup-us.ahrq.gov/reports/methods/MS-2021-04-PopulationReport.pdf
    January 01, 2021 - For population counts based on Census data, there is no sampling error. … Step-By-Step Example Consider the following example of calculating a population-based rate and standard error … There is no error associated with the Census population count. … For this example, call the population count "ADULT_US_POP" Step 4: Calculate rate and standard error … Calculate the population-based rate per 100,000 population and the standard error of the rate as follows

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