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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 19 of 19 Research Studies DisplayedKim D, Swaminathan S, Lee Y
Racial and ethnic disparities in excess deaths after COVID-19 vaccine deployment among persons with kidney failure.
COVID-19 resulted in clear racial/ethnic disparities in excess deaths among persons with kidney failure. It is not clear whether or how these disparities changed throughout the pandemic, especially after the deployment of COVID-19 vaccines. The purpose of this study was to examine disparities in excess mortality for the Medicare population with kidney failure from March 2020, through December 2021. The study found that there were 686,719 patients with kidney failure in January 2020. Researchers reported an increase in excess deaths beginning March 1, 2020, with a peak in January 2021. From March 1, 2020, through January 30, 2021, and there were substantial disparities in excess deaths across racial/ethnic groups. The number of excess deaths was 5582, 4303, and 2679 for non-Hispanic White, non-Hispanic Black, and Hispanic patients, respectively. The percent excess deaths was 31.9% for Hispanic patients, 27.5% for non-Hispanic Black patients, and 16.4% for non-Hispanic White patients. After the wide distribution of COVID-19 vaccines since the end of January 2021, the lowest percent excess deaths was observed among Hispanic patients, followed by Black patients, and White patients.
AHRQ-funded; HS028285.
Citation: Kim D, Swaminathan S, Lee Y .
Racial and ethnic disparities in excess deaths after COVID-19 vaccine deployment among persons with kidney failure.
Clin J Am Soc Nephrol 2023 Sep; 18(9):1207-09. doi: 10.2215/cjn.0000000000000226..
Keywords: COVID-19, Racial and Ethnic Minorities, Disparities, Vaccination, Kidney Disease and Health, Mortality
Cheng TL, Mistry KB
AHRQ Author: Mistry KB
Clarity on disparity: who, what, when, where, why, and how.
This purpose of this article was to explain a comprehensive framework of health disparities descriptors that can offer a systematic approach to advance the understanding of causes of health disparities and facilitate action steps to ensure health equity.
AHRQ-authored.
Citation: Cheng TL, Mistry KB .
Clarity on disparity: who, what, when, where, why, and how.
Pediatr Clin North Am 2023 Aug; 70(4):639-50. doi: 10.1016/j.pcl.2023.03.003..
Keywords: Disparities, Social Determinants of Health, Newborns/Infants, Mortality, Health Status, Racial and Ethnic Minorities, Access to Care
Feyman Y, Avila CJ, Auty S
Racial and ethnic disparities in excess mortality among U.S. veterans during the COVID-19 pandemic.
This study examined whether minority veterans experienced higher rates of all-cause mortality than White veterans during the COVID-19 pandemic. The authors used administrative data from the Veterans Health Administration’s Corporate Data Warehouse. Veterans were excluded in the analysis if they were missing county of residence or race-ethnicity data. Overall, veteran mortality rates were 16% above normal during March-December 2020 which equates to 42,348 excess deaths. Non-Hispanic White veterans experienced the smallest relative increase in mortality (17%), while Native American veterans had the highest increase (40%). Black Veterans (32%) and Hispanic Veterans (26%) had somewhat lower excess mortality, although these changes were significantly higher compared to White veterans. Disparities were smaller compared to the general population.
AHRQ-funded; HS026395.
Citation: Feyman Y, Avila CJ, Auty S .
Racial and ethnic disparities in excess mortality among U.S. veterans during the COVID-19 pandemic.
Health Serv Res 2023 Jun; 58(3):642-53. doi: 10.1111/1475-6773.14112..
Keywords: COVID-19, Mortality, Racial and Ethnic Minorities, Disparities
Lundberg DJ, Wrigley-Field E, Cho A
COVID-19 mortality by race and ethnicity in US metropolitan and nonmetropolitan areas, March 2020 to February 2022.
Previous research has determined that Hispanic and non-Hispanic Black residents in the United States experienced significantly higher COVID-19 mortality rates in 2020 than non-Hispanic White residents due to structural racism. In 2021, these disparities were observed to decrease. The purpose of this study was to evaluate the extent to which national decreases in racial and ethnic disparities in COVID-19 mortality between the initial pandemic wave and the subsequent Omicron wave reflect decreases in mortality vs other factors, such as the changing geography of the pandemic. The researchers conducted this cross-sectional study using data from the United States Centers for Disease Control and Prevention for COVID-19 deaths from March 1, 2020, through February 28, 2022, in U.S. resident adults aged 25 years and older. Deaths were examined by race and ethnicity across metropolitan and nonmetropolitan areas, and the national decrease in racial and ethnic disparities between the initial wave and Omicron waves was decomposed. The study included death certificates for 977, 018 U.S. that included a mention of COVID-19. The rate of COVID-19 deaths among adults residing in nonmetropolitan areas increased 5.4% during the initial wave to a peak of 23.4% during the Delta wave; the proportion was 21.5% during the Omicron wave. The national disparity in age-standardized COVID-19 death rates per 100,000 person-years for non-Hispanic Black compared with non-Hispanic White adults decreased by 293 deaths. After standardizing for age and racial and ethnic differences by metropolitan vs nonmetropolitan residence, increases in death rates among non-Hispanic White adults explained 40.7% of the decrease (40.7%); 19.6% of the decrease was explained by shifts in mortality to nonmetropolitan areas, where a disproportionate share of non-Hispanic White adults resided. The remaining 39.6% of the decrease was explained by decreases in death rates in non-Hispanic Black adults. The researchers concluded that the majority of the national decrease in racial and ethnic disparities in COVID-19 mortality between the initial wave and Omicron waves was explained by increased mortality among non-Hispanic White adults and changes in the geographic distribution of the pandemic.
AHRQ-funded; HS013853.
Citation: Lundberg DJ, Wrigley-Field E, Cho A .
COVID-19 mortality by race and ethnicity in US metropolitan and nonmetropolitan areas, March 2020 to February 2022.
JAMA Netw Open 2023 May; 6(5):e2311098. doi: 10.1001/jamanetworkopen.2023.11098..
Keywords: COVID-19, Mortality, Racial and Ethnic Minorities
Song Zhang, Zhang X, Patterson LJ
Racial and ethnic disparities in hospitalization outcomes among Medicare beneficiaries during the COVID-19 pandemic.
This study assessed assess racial and ethnic differences in hospitalization outcomes during the COVID-19 pandemic among Medicare beneficiaries. Medicare claims from the Social Security Administration was used to determine in-hospital mortality and mortality inclusive of discharges to hospice and discharges to postacute care. Over 31 million Medicare recipients in the database were analyzed with over 14 million hospitalizations from January 2019 to February 2021. There was a decline in non-COVID-19 and an emergence of COVID-19 hospitalizations among beneficiaries of different racial and ethnic minority groups through February 2021. In-hospital mortality was not significantly different among Black patients relative to White patients but was 3.5 percentage points higher among Hispanic patients and other racial and ethnic minority groups. There were disparities in discharges to hospice and postacute care as well.
AHRQ-funded; HS024072.
Citation: Song Zhang, Zhang X, Patterson LJ .
Racial and ethnic disparities in hospitalization outcomes among Medicare beneficiaries during the COVID-19 pandemic.
JAMA Health Forum 2021 Dec 23;2(12):e214223. doi: 10.1001/jamahealthforum.2021.4223..
Keywords: COVID-19, Racial and Ethnic Minorities, Disparities, Medicare, Hospitalization, Outcomes, Mortality
Dixon BE, Grannis SJ, Lembcke LR
The synchronicity of COVID-19 disparities: statewide epidemiologic trends in SARS-CoV-2 morbidity, hospitalization, and mortality among racial minorities and in rural America.
Researchers sought to examine trends in COVID-19 morbidity, hospitalization, and mortality over time for minority and rural populations, especially during the U.S. fall surge. Data were taken from a statewide cohort of adult residents in Indiana tested for SARS-CoV-2 infection. The researchers found that, by the fall of 2020, hospitalization and mortality rates in rural areas surpassed those of urban areas, and gaps between black/brown and white populations narrowed. Cumulative morbidity and mortality were highest among minority groups and in rural communities. They concluded that the synchronicity of disparities in COVID-19 by race and geography suggested that health officials explicitly measure disparities and adjust mitigation as well as vaccination strategies to protect those sub-populations with greater disease burden.
AHRQ-funded; HS025502.
Citation: Dixon BE, Grannis SJ, Lembcke LR .
The synchronicity of COVID-19 disparities: statewide epidemiologic trends in SARS-CoV-2 morbidity, hospitalization, and mortality among racial minorities and in rural America.
PLoS One 2021 Jul 23;16(7):e0255063. doi: 10.1371/journal.pone.0255063..
Keywords: COVID-19, Disparities, Racial and Ethnic Minorities, Hospitalization, Mortality, Rural Health
Burris HH, Passarella M, Handley SC
Black-white disparities in maternal in-hospital mortality according to teaching and black-serving hospital status.
This study’s objective was to determine whether black-white disparities in maternal in-hospital mortality during delivery vary across hospital types (black-serving vs non-black and teaching vs non-teaching) and whether overall maternal mortality differs across hospital types. The authors performed a population-based, retrospective cohort study of 5,679,044 deliveries among black (14.2%) and white patients (85.8%) in 3 states (California, Missouri, and Pennsylvania) from 1995 to 2009. Examination of black-white disparities found that after risk adjustment, black patients had significantly greater risk of death and that the disparity was similar within each of the hospital types. At teaching hospitals, mortality was similar in black-serving and nonblack-serving hospitals. Among non-teaching hospitals, mortality was significantly higher in black-serving vs nonblack-serving hospitals. Over half (53%) of black patients delivered in nonteaching black-serving hospitals compared with just 19% of white patients.
AHRQ-funded; HS018661.
Citation: Burris HH, Passarella M, Handley SC .
Black-white disparities in maternal in-hospital mortality according to teaching and black-serving hospital status.
Am J Obstet Gynecol 2021 Jul;225(1):83.e1-83.e9. doi: 10.1016/j.ajog.2021.01.004..
Keywords: Maternal Care, Pregnancy, Mortality, Women, Racial and Ethnic Minorities, Disparities, Hospitals
Coley RY, Johnson E, Simon GE
Racial/ethnic disparities in the performance of prediction models for death by suicide after mental health visits.
This study looked at racial/ethnic disparities in the performance of prediction models for death by suicide after mental health visit. The main outcome measured was the suicide rate within 90 days after a mental health visit. The study used a 50% sample of visits from a random set of outpatients at 7 large integrated health care systems by patients 13 years and older (6,984,184 visits). Suicide rates were highest for visits by patients with no race/ethnicity recorded, followed by Asian, White, American Indian/Alaskan Native, Hispanic, and Black. Sensitivity of both models used were high for White, Hispanic, and Asian patients and poor for Black and American Indian/Alaskan Native patients and patients with no race/ethnicity recorded.
AHRQ-funded; HS026369.
Citation: Coley RY, Johnson E, Simon GE .
Racial/ethnic disparities in the performance of prediction models for death by suicide after mental health visits.
JAMA Psychiatry 2021 Jul;78(7):726-34. doi: 10.1001/jamapsychiatry.2021.0493..
Keywords: Disparities, Racial and Ethnic Minorities, Behavioral Health, Mortality, Risk
Hollingsworth JM, Yu X, Yan PL
Provider care team segregation and operative mortality following coronary artery bypass grafting.
The purpose of this study was to examine whether provider care team segregation within hospitals contributes to the higher mortality rate of Black patients following coronary artery bypass grafting compared to their White counterparts. Using national Medicare data, findings showed that Black patients who undergo coronary artery bypass grafting at a hospital with a higher level of provider care team segregation die more frequently after surgery than Black patients treated at a hospital with a lower level.
AHRQ-funded; HS026908.
Citation: Hollingsworth JM, Yu X, Yan PL .
Provider care team segregation and operative mortality following coronary artery bypass grafting.
Circ Cardiovasc Qual Outcomes 2021 May;14(5):e007778. doi: 10.1161/circoutcomes.120.007778..
Keywords: Surgery, Heart Disease and Health, Cardiovascular Conditions, Mortality, Teams, Healthcare Delivery, Racial and Ethnic Minorities
Kim D, Lee Y, Thorsness R
Racial and ethnic disparities in excess deaths among persons with kidney failure during the COVID-19 pandemic, March-July 2020.
This national study estimated excess deaths for the kidney failure population by race and ethnicity from March 1 through August 1, 2020. Findings showed that, among the US kidney failure population, the number of excess deaths was 16% higher than expected, similar to reports for the general population. However, results showed that the relative increase in deaths among Black and Hispanic patients was more than 4-fold higher than that observed among White patients. The magnitude of these disparities was larger than corresponding relative ratios reported among COVID-19–associated deaths in the general population.
AHRQ-funded; HS028285.
Citation: Kim D, Lee Y, Thorsness R .
Racial and ethnic disparities in excess deaths among persons with kidney failure during the COVID-19 pandemic, March-July 2020.
Am J Kidney Dis 2021 May;77(5):827-29. doi: 10.1053/j.ajkd.2021.02.003..
Keywords: COVID-19, Racial and Ethnic Minorities, Disparities, Mortality, Kidney Disease and Health, Chronic Conditions, Social Determinants of Health
Patel SA, Krasnow M, Long K
Excess 30-day heart failure readmissions and mortality in black patients increases with neighborhood deprivation.
Researchers examined whether neighborhood environment modifies the disparity in 30-day heart failure (HF) readmissions and mortality between Black and White patients in the Southeastern United States. They created a geocoded retrospective cohort of patients hospitalized for acute HF from 2010-2018 within Emory Healthcare. They found that excess 30-day HF readmissions and mortality were present among Black patients in every neighborhood strata and increased with progressive neighborhood socioeconomic deprivation.
AHRQ-funded; HS026081.
Citation: Patel SA, Krasnow M, Long K .
Excess 30-day heart failure readmissions and mortality in black patients increases with neighborhood deprivation.
Circ Heart Fail 2020 Dec;13(12):e007947. doi: 10.1161/circheartfailure.120.007947..
Keywords: Heart Disease and Health, Cardiovascular Conditions, Hospital Readmissions, Racial and Ethnic Minorities, Mortality, Social Determinants of Health, Low-Income, Disparities
Althoff KN, Leifheit KM, Park JN
Opioid-related overdose mortality in the era of fentanyl: monitoring a shifting epidemic by person, place, and time.
Investigators described US trends in opioid-related overdose mortality rates by race, age, urbanicity, and opioid type before and after the emergence of fentanyl. Using the CDC’s WONDER database, they found a disproportionate increase in opioid-related overdose deaths among urban non-Hispanic Black Americans and recommended interventions for this population in order to halt the increase in overdose deaths.
AHRQ-funded; HS000046.
Citation: Althoff KN, Leifheit KM, Park JN .
Opioid-related overdose mortality in the era of fentanyl: monitoring a shifting epidemic by person, place, and time.
Drug Alcohol Depend 2020 Nov 1;216:108321. doi: 10.1016/j.drugalcdep.2020.108321..
Keywords: Opioids, Medication, Substance Abuse, Mortality, Racial and Ethnic Minorities, Social Determinants of Health
Li Y, Temkin-Greener H, Shan G
COVID-19 infections and deaths among Connecticut nursing home residents: facility correlates.
This study looked at the relationship between higher registered nurse (RN) staffing, quality ratings, the concentration of Medicaid residents or racial/ethnic minorities; and the number of COVID-19 confirmed cases and deaths at nursing homes. All Connecticut nursing homes (n = 215) were included in the study. As of April 16, 2020, the average number of confirmed cases was 8 per nursing home (zero in 107 facilities) and the number of confirmed deaths was 1.7 per nursing (zero in 131 facilities). In nursing homes with at least one death, every 20-minute increase in RN staffing significantly predicted 26% fewer COVID-19 deaths and was associated with 22% fewer confirmed cases. Facilities with a high concentration of Medicaid residents or racial/ethnic minority residents had 16% and 15% more confirmed cases.
AHRQ-funded; HS024923; HS026893.
Citation: Li Y, Temkin-Greener H, Shan G .
COVID-19 infections and deaths among Connecticut nursing home residents: facility correlates.
J Am Geriatr Soc 2020 Sep;68(9):1899-906. doi: 10.1111/jgs.16689..
Keywords: Elderly, COVID-19, Nursing Homes, Long-Term Care, Mortality, Racial and Ethnic Minorities
Jannat-Khah DP, Khodneva Y, Bryant K
Depressive symptoms do not discriminate: racial and economic influences between time-varying depressive symptoms and mortality among REGARDS participants.
This study examined whether time-varying depressive symptoms (TVDS) predict mortality and if racial and income differences moderate the association in a large cohort. The cohort from the REGARDS study was used to look at that determination. The REGARDS study used community-dwelling U.S. adults aged 45 years or older. They found that there was similar and statistically significant differences with white, black, and low-income ($35,000 or less) participants for the association between TVDS and mortality. High-income participants were found to have a lower hazard.
AHRQ-funded; HS025198.
Citation: Jannat-Khah DP, Khodneva Y, Bryant K .
Depressive symptoms do not discriminate: racial and economic influences between time-varying depressive symptoms and mortality among REGARDS participants.
Ann Epidemiol 2020 Jun;46:31-40.e2. doi: 10.1016/j.annepidem.2020.04.004..
Keywords: Depression, Behavioral Health, Racial and Ethnic Minorities, Cardiovascular Conditions, Cancer, Low-Income, Social Determinants of Health, Mortality
Jones JM, Fingar KR, Miller MA
AHRQ Author: Miller MA; Heslin KC
Racial disparities in sepsis-related in-hospital mortality: using a broad case capture method and multivariate controls for clinical and hospital variables, 2004-2013.
The objective of this study was to use a broad method of capturing sepsis cases to estimate 2004-2013 trends in in-hospital sepsis mortality rates by race/ethnicity. Mortality rates adjusted for patient characteristics were higher for all minority groups than for white patients. After adjusting for hospital characteristics, sepsis mortality rates in 2013 were similar for white, black, and Hispanic patients.
AHRQ-authored.
Citation: Jones JM, Fingar KR, Miller MA .
Racial disparities in sepsis-related in-hospital mortality: using a broad case capture method and multivariate controls for clinical and hospital variables, 2004-2013.
Crit Care Med 2017 Dec;45(12):e1209-e17. doi: 10.1097/ccm.0000000000002699.
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Keywords: Disparities, Healthcare Cost and Utilization Project (HCUP), Mortality, Racial and Ethnic Minorities, Sepsis
Jolley SE, Hough CL, Clermont G
Relationship between race and the effect of fluids on long-term mortality after acute respiratory distress syndrome. secondary analysis of the National Heart, Lung, and Blood Institute Fluid and Catheter Treatment Trial.
Short-term follow-up in the Fluid and Catheter Treatment Trial (FACTT) suggested differential mortality by race with conservative fluid management, but no significant interaction. A post hoc analysis of FACTT and the Economic Analysis of Pulmonary Artery Catheters (EAPAC) study was performed. The researchers found that in their cohort, conservative fluid management may have improved 1-year mortality for non-Hispanic black patients with ARDS. However, they found no long-term benefit of conservative fluid management in white subjects.
AHRQ-funded; HS011620.
Citation: Jolley SE, Hough CL, Clermont G .
Relationship between race and the effect of fluids on long-term mortality after acute respiratory distress syndrome. secondary analysis of the National Heart, Lung, and Blood Institute Fluid and Catheter Treatment Trial.
Ann Am Thorac Soc 2017 Sep;14(9):1443-49. doi: 10.1513/AnnalsATS.201611-906OC..
Keywords: Racial and Ethnic Minorities, Respiratory Conditions, Mortality
Farias AJ, Du XL
Racial differences in adjuvant endocrine therapy use and discontinuation in association with mortality among Medicare breast cancer patients by receptor status.
The purpose of this study was to determine whether racial/ethnic differences in use and discontinuation of adjuvant endocrine therapy (AET) differed by hormone receptor status and whether discontinuation was associated with mortality. There are racial/ethnic differences in AET use and discontinuation. Discontinuing treatment was associated with higher risk of all-cause and cancer-specific mortality regardless of hormone receptor status.
AHRQ-funded; HS018956.
Citation: Farias AJ, Du XL .
Racial differences in adjuvant endocrine therapy use and discontinuation in association with mortality among Medicare breast cancer patients by receptor status.
Cancer Epidemiol Biomarkers Prev 2017 Aug;26(8):1266-75. doi: 10.1158/1055-9965.epi-17-0280.
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Keywords: Cancer: Breast Cancer, Disparities, Elderly, Mortality, Racial and Ethnic Minorities
Rice WS, Goldfarb SS, Brisendine AE
Disparities in infant mortality by race among Hispanic and non-Hispanic infants.
This study explored possible implications of racial identification for the health of U.S. born Hispanic compared to non-Hispanic infants. It concluded that the risk of infant mortality varies among Hispanic infants by race, with poorer outcomes experienced by Hispanic black infants. Compared to non-Hispanic infants of the same race, Hispanic black infants experience a smaller health disadvantage and Hispanic white infants have better or similar infant health outcomes.
AHRQ-funded; HS013852.
Citation: Rice WS, Goldfarb SS, Brisendine AE .
Disparities in infant mortality by race among Hispanic and non-Hispanic infants.
Matern Child Health J 2017 Jul;21(7):1581-88. doi: 10.1007/s10995-017-2290-3.
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Keywords: Disparities, Newborns/Infants, Mortality, Newborns/Infants, Racial and Ethnic Minorities
Hines AL, Andrews RM, Moy E
AHRQ Author: Andrews RM, Moy E
Disparities in rates of inpatient mortality and adverse events: race/ethnicity and language as independent contributors.
The authors investigated inpatient mortality rates and obstetric trauma for self-reported speakers of English, Spanish, and languages of Asia and the Pacific Islands (API) and compared quality of care by language with patterns by race/ethnicity. They found that speaking a non-English principal language and having a non-White race/ethnicity did not place patients at higher risk for inpatient mortality, except for a higher stroke mortality for Japanese-speaking patients. Patients who spoke API languages or had API race/ethnicity had higher risk for obstetric trauma than English-speaking White patients, while Spanish-speaking Hispanic patients had more obstetric trauma than English-speaking Hispanic patients.
AHRQ-authored; AHRQ-funded; 290201300002C.
Citation: Hines AL, Andrews RM, Moy E .
Disparities in rates of inpatient mortality and adverse events: race/ethnicity and language as independent contributors.
Int J Environ Res Public Health 2014 Dec;11(12):13017-34. doi: 10.3390/ijerph111213017.
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Keywords: Communication, Disparities, Healthcare Cost and Utilization Project (HCUP), Mortality, Racial and Ethnic Minorities