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  1. hcup-us.ahrq.gov/reports/methods/2005_06.pdf
    January 01, 2005 - Thus, to develop the QI rates, we needed national-level data for the QI denominators by each reporting … Statistical Methods for Rates and Proportions. New York: Wiley, 1973 Houchens R, Elixhauser A. … We adjusted rates for age and sex using the method of direct standardization (Fleiss, 1973). … We estimated the observed rates for each of 36 age/sex categories. … Let SE1 and SE2 be the corresponding standard errors for the two rates.
  2. hcup-us.ahrq.gov/reports/methods/2004-05.pdf
    January 01, 2004 - Thus, to develop the QI rates, we needed national-level data for the QI denominators by each reporting … Statistical Methods for Rates and Proportions. New York: Wiley, 1973 HCUP. … We adjusted rates for age and sex using the method of direct standardization (Fleiss, 1973). … We estimated the observed rates for each of 36 age/sex categories. … Let SE1 and SE2 be the corresponding standard errors for the two rates.
  3. hcup-us.ahrq.gov/reports/methods/2006_8.pdf
    January 01, 2006 - Thus, to develop the QI rates, we needed national-level data for the QI denominators by each reporting … Statistical Methods for Rates and Proportions. New York: Wiley, 1973 Houchens R, Elixhauser A. … We adjusted rates for age and sex using the method of direct standardization (Fleiss, 1973). … We estimated the observed rates for each of 36 age/sex categories. … Let SE1 and SE2 be the corresponding standard errors for the two rates.
  4. hcup-us.ahrq.gov/reports/statbriefs/sb243-Severe-Maternal-Morbidity-Delivery-Trends-Disparities.pdf
    February 01, 2018 - ■ Hispanics and Asian/Pacific Islanders also had higher rates of severe maternal morbidity than … Finally, disparities in rates of severe maternal morbidity and in-hospital mortality are examined over … Percentage change was calculated from unrounded rates; thus, the rounded rates may appear the same in … Rates of severe maternal morbidity also were higher for mothers who were uninsured or whose delivery … /ethnic groups, rates of in-hospital mortality decreased for each group.
  5. hcup-us.ahrq.gov/db/nation/nrd/nrdrelatedreports.jsp
    June 01, 2020 - links below provide additional information on the impact of the ICD-10-CM/PCS transition on readmission rates … Impact of the ICD-10-CM/PCS Transition on Readmission Rates, 2015-2017 (PDF file, 359 KB)
  6. hcup-us.ahrq.gov/reports/statbriefs/sb112.pdf
    May 01, 2011 - Figure 1 shows that the highest rates of ED visits related to eye injuries were for 18 to 44 year olds … The highest rates of eye injury-related ED visits resulting in hospital admission were for adults 65 … Age-specific rates of eye injury ED visits mirrored the age-specific rates of ED visits for other types … Regional variation for eye injury ED visits mirrored the regional rates of ED visits for other types … This is consistent with other types of injury where ED visit rates for rural patients were nearly 6
  7. hcup-us.ahrq.gov/reports/statbriefs/sb147.pdf
    March 01, 2012 - Influenza hospitalization rates are also depicted from 2005–2010. … However, in younger age groups, ED visit rates for influenza were higher in 2009 compared to 2008. … In comparison, in both 2008 and 2009, rates for non-influenza visits were the highest among adults aged … Rates* of hospitalizations for influenza during the influenza season,** 2005–2010 16.1 9.7 25.9 … Denominator data for rates were based on the U.S.
  8. hcup-us.ahrq.gov/reports/methods/2008_06.pdf
    January 01, 2008 - Because each of these software modules was developed for State and hospital-level rates, rather than … national rates, some changes to the QI calculations were necessary. … We adjusted rates for age and sex using the method of direct standardization (Fleiss, 1973). … We estimated the observed rates for each of 36 age/sex categories. … Let SE1 and SE2 be the corresponding standard errors for the two rates.
  9. hcup-us.ahrq.gov/reports/methods/2016-01.pdf
    January 01, 2016 - Because of ICD- 9-CM coding changes for COPD for data prior to 2005 rates are not compatible with ratesRates were not risk-adjusted. … Rates were not risk-adjusted. … Variation Among State QI Rates: Variation in State rates can be caused by many factors, including differences … To understand some of the variation in State rates, we analyzed the 2001 State-level QI rates in relation
  10. hcup-us.ahrq.gov/reports/methods/2017-03.pdf
    January 01, 2017 - Because of ICD- 9-CM coding changes for COPD for data prior to 2005 rates are not compatible with ratesRates were not risk-adjusted. … Rates were not risk-adjusted. … Variation Among State QI Rates: Variation in State rates can be caused by many factors, including differences … To understand some of the variation in State rates, we analyzed the 2001 State-level QI rates in relation
  11. hcup-us.ahrq.gov/reports/statbriefs/sb106.pdf
    February 14, 2011 - ■ Hospitalization rates for acute exacerbation of COPD were highest among patients 75–84 years ( … ■ Hospitalization rates for COPD with acute exacerbation were highest in the Midwest (436 stays … 438 stays per 100,000) and lowest in the West (218 stays per 100,000), mirroring regional smoking rates … As shown in figure 1, hospitalization rates for acute exacerbation increased with age up to 75–84 years … Although the definitions may not be identical, research indicates that smoking rates are higher among
  12. hcup-us.ahrq.gov/reports/statbriefs/sb194-Inpatient-Mortality-High-Volume-Conditions.pdf
    November 01, 2014 - Previous trends in inpatient mortality suggest that rates have been decreasing for high-volume conditions … Cost and Utilization Project (HCUP) Statistical Brief examines trends in observed inpatient mortality rates … for AMI, CHF, stroke, and pneumonia for adults aged 18 years and older, as well as changes in these rates … Agency for Healthcare Research and Quality Highlights ■ Observed inpatient mortality rates … Mortality rates for these conditions reflect deaths that occurred while a patient was in a hospital
  13. hcup-us.ahrq.gov/reports/statbriefs/sb106.jsp
    February 01, 2011 - Hospitalization rates for acute exacerbation of COPD were highest among patients 75–84 years (1,075 stays … Hospitalization rates for COPD with acute exacerbation were highest in the Midwest (436 stays per 100,000 … Hospitalization rates were also highest in the poorest communities (533 versus 312 stays per 100,000) … As shown in figure 1, hospitalization rates for acute exacerbation increased with age up to 75–84 years … Although the definitions may not be identical, research indicates that smoking rates are higher among
  14. hcup-us.ahrq.gov/reports/statbriefs/sb147.jsp
    January 01, 2013 - Influenza hospitalization rates are also depicted from 2005-2010. … *Denominator data for rates were based on the U.S. … Figure 2 - Rates* of Hospitalizations for Influenza during the Influenza Season, ** 2005-2010. … *The rates are based on hospital. … Denominator data for rates were based on the U.S.
  15. hcup-us.ahrq.gov/reports/statbriefs/sb45.pdf
    January 01, 2008 - Specifically, variations in circumcision rates by payer and region are presented. … While the male rate did not fluc substantially acr regional rates o circumcision var Nearly three-qu … Rates of circumcision were not influenced by overall birth rates in each region. … The regional differences in circumcision rates may be explained by variations in racial, ethnic, and … Note: The denominator for the rates is the total U.S. population. U.S.
  16. hcup-us.ahrq.gov/reports/statbriefs/SB307-508.pdf
    November 03, 2021 - presents national estimates on clinical conditions with the highest hospital readmission counts, rates … Both conditions also had one of the highest readmission rates—schizophrenia: 23.1 and 18.0 per 100 index … Stays for hepatitis also had one of the highest readmission rates (21.4 per 100 index admissions), albeit … Both rates were higher than those for stays with an expected payer of private insurance (27.2 per 100 … Complications of transplanted organs or tissue had higher readmission rates for stays with an expected
  17. hcup-us.ahrq.gov/reports/statbriefs/sb169-Asthma-Trends-Hospital-Stays.jsp
    January 01, 2014 - However, differences in rates of hospitalization for asthma suggest that there is significant room for … Rates of asthma-related admission were more than three times higher among African American children and … Across both age groups, African American and Hispanic patients had higher rates of asthma relative to … Pediatric and adult patients in the lowest income communities had higher rates of hospital stays for … PQI rates can also be affected by other factors such as disease prevalence.
  18. hcup-us.ahrq.gov/reports/statbriefs/sb169-Asthma-Trends-Hospital-Stays.pdf
    August 01, 2013 - However, differences in rates of hospitalization for asthma suggest that there is significant room for … ■ Pediatric and adult patients in the lowest income communities had consistently higher rates of … Across both age groups, African American and Hispanic patients had higher rates of asthma relative to … Rates were adjusted by age and sex using the 2000 United States population as the standard4. … PQI rates can also be affected by other factors such as disease prevalence.
  19. hcup-us.ahrq.gov/reports/methods/2011_05.pdf
    January 01, 2011 - Risk-adjustment models were presented for inpatient mortality rates following craniotomy and rates of … Of the 13 PSIs identified, rates for all but one were lower when POA values were used. … Again using California SID data, they calculated risk-adjusted hospital mortality rates using either … • Moriarty and colleagues (2010) found that rates of the AHRQ failure to rescue (FTR) PSIs were … Mandatory public reporting of hospital-acquired infection rates: a report from California.
  20. hcup-us.ahrq.gov/reports/factsandfigures/2009/exhibit5_5.jsp
    January 01, 2009 - Among 1 to 9 year olds, males had 64- to 75-percent higher rates of stays for asthma compared to females … Hospitalization rates for fracture of lower limb and intracranial injury were more than twice as high … With the exception of children 3 to 5 years, males had 36- to 50-percent higher rates of appendectomy … Males 6 to 9 years old had higher rates of blood transfusion compared to females (2 male stays versus … Among stays not related to pregnancy and childbirth, males had higher rates of procedures than females

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