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Search All Research Studies
AHRQ Research Studies Date
Topics
- Access to Care (3)
- Disparities (2)
- Emergency Department (4)
- (-) Healthcare Cost and Utilization Project (HCUP) (9)
- Healthcare Utilization (2)
- (-) Health Insurance (9)
- Hospitalization (3)
- Hospital Readmissions (3)
- Hospitals (1)
- Labor and Delivery (1)
- Maternal Care (1)
- Medicaid (5)
- Newborns/Infants (1)
- Opioids (1)
- Policy (2)
- Pregnancy (1)
- Racial and Ethnic Minorities (1)
- Surgery (1)
- Women (1)
- Young Adults (1)
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 9 of 9 Research Studies DisplayedDecker S, Dworsky M, Gibson TB
AHRQ Author: Decker S
The Impact of the Affordable Care Act Insurance Expansions on Opioid-Related Emergency Department Visits.
The authors leveraged ACA coverage expansions, including Medicaid expansion and Marketplaces, to study the impact of health insurance on opioid-related emergency department (ED) visits. They used ZIP-code–level ED utilization data from HCUP’s State Inpatient Databases (SID) and State Emergency Department Databases (SEDD) for 29 states. They found evidence of a dose-response relationship between pre-ACA uninsured and changes in ED visit rates in both expansion and non-expansion states: areas with higher uninsured rates prior to ACA saw larger reductions in opioid-related ED visits after the ACA took effect. The authors concluded that these findings suggest that increased insurance coverage may to help mitigate the opioid crisis.
AHRQ-authored.
Citation: Decker S, Dworsky M, Gibson TB .
The Impact of the Affordable Care Act Insurance Expansions on Opioid-Related Emergency Department Visits.
American Journal of Health Economics 2023 Sum; 9(3):405–34..
Keywords: Healthcare Cost and Utilization Project (HCUP), Opioids, Policy, Health Insurance, Emergency Department, Access to Care, Medicaid, Healthcare Utilization
Steenland MW, Wherry LR
Medicaid expansion led to reductions in postpartum hospitalizations.
The purpose of this study was to assess whether the Medicaid expansions of the Affordable Care Act (ACA) affected rates of postpartum hospitalization. The researchers compared states that did and did not expand Medicaid under the ACA as they related to changes in hospitalizations among birthing people with a Medicaid-financed delivery. The study found a 17% reduction in hospitalizations during the first 60 days postpartum associated with the Medicaid expansions, and evidence of a lesser decrease in hospitalizations between 61 days and 6 months postpartum. The researchers concluded that Medicaid coverage expansion under the ACA resulted in improved postpartum health for low-income birthing people.
AHRQ-funded; HS027464.
Citation: Steenland MW, Wherry LR .
Medicaid expansion led to reductions in postpartum hospitalizations.
Health Aff 2023 Jan; 42(1):18-25. doi: 10.1377/hlthaff.2022.00819..
Keywords: Healthcare Cost and Utilization Project (HCUP), Medicaid, Hospitalization, Maternal Care, Women, Health Insurance, Access to Care
Moriya AS, Chakravarty S
AHRQ Author: Moriya AS
Racial and ethnic disparities in preventable hospitalizations and ED visits five years after ACA Medicaid expansions,.
This AHRQ-authored paper examined whether the 2014 Affordable Care Act (ACA) Medicaid expansions mitigated existing racial or ethnic disparities in preventable hospitalizations and emergency department (ED) visits. The authors used inpatient data from twenty-nine states and ED data from twenty-six states for the period 2011 to 2018. They found that Medicaid expansions decreased disparities in preventable hospitalizations and ED visits between non-Hispanic Black and White nonelderly adults by 10 percent or more. There were no significant effects on disparities between Hispanic and non-Hispanic White nonelderly adults. Their findings highlight sustained improvements in community-level care for non-Hispanic Black populations, but also suggest access barriers experienced by Hispanic adults that need to be addressed beyond Medicaid eligibility expansion.
AHRQ-authored.
Citation: Moriya AS, Chakravarty S .
Racial and ethnic disparities in preventable hospitalizations and ED visits five years after ACA Medicaid expansions,.
Health Aff 2023 Jan; 42(1):26-34. doi: 10.1377/hlthaff.2022.00460..
Keywords: Healthcare Cost and Utilization Project (HCUP), Racial and Ethnic Minorities, Emergency Department, Hospitalization, Disparities, Medicaid, Health Insurance, Access to Care
Nuckols TK, Fingar KR, Barrett ML
AHRQ Author: Steiner CA, Stocks C, Owens PL
Returns to emergency department, observation, or inpatient care within 30 days after hospitalization in 4 states, 2009 and 2010 versus 2013 and 2014.
This study described trends in rates of 30-day, all-cause, unplanned returns to the hospital, including returns for observation stays and ED visits. Increases in observation and ED visits coincided with declines in readmissions for private insurance and Medicare. Return rates rose among patients with Medicaid and the uninsured.
AHRQ-authored.
Citation: Nuckols TK, Fingar KR, Barrett ML .
Returns to emergency department, observation, or inpatient care within 30 days after hospitalization in 4 states, 2009 and 2010 versus 2013 and 2014.
J Hosp Med 2018 May;13(5):296-303. doi: 10.12788/jhm.2883.
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Keywords: Emergency Department, Health Insurance, Healthcare Cost and Utilization Project (HCUP), Hospitalization, Hospital Readmissions
Basu J, Hanchate A, Bierman A
AHRQ Author: Basu J, Bierman A
Racial/ethnic disparities in readmissions in US hospitals: the role of insurance coverage.
This study examined differences in rates of 30-day readmissions across patients by race/ethnicity and the extent to which these differences were moderated by insurance coverage. It found higher readmission risk for non-Hispanic blacks, compared with non-Hispanic whites, among those covered by Medicare and private insurance, but lower risk among uninsured and similar risk among Medicaid.
AHRQ-authored.
Citation: Basu J, Hanchate A, Bierman A .
Racial/ethnic disparities in readmissions in US hospitals: the role of insurance coverage.
Inquiry 2018 Jan-Dec;55:46958018774180. doi: 10.1177/0046958018774180.
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Keywords: Disparities, Health Insurance, Healthcare Cost and Utilization Project (HCUP), Hospitals, Hospital Readmissions
Henke RM, Wier LM, Marder WD
AHRQ Author: Friedman BS, Wong HS
Geographic variation in cesarean delivery in the United States by payer.
This study aimed (1) to determine whether the geographic variation in cesarean delivery rate is consistent for private insurance and Medicaid, and (2) to identify the patient, population, and market factors associated with cesarean rate and determine if these factors vary by payer. It concluded that factors associated with geographic variation in cesarean delivery, a frequent and high-resource inpatient procedure, vary somewhat by payer.
AHRQ-authored; AHRQ-funded; 290200600009C.
Citation: Henke RM, Wier LM, Marder WD .
Geographic variation in cesarean delivery in the United States by payer.
BMC Pregnancy Childbirth 2014 Nov 19;14:387. doi: 10.1186/s12884-014-0387-x.
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Keywords: Healthcare Cost and Utilization Project (HCUP), Health Insurance, Labor and Delivery, Medicaid, Pregnancy
Hernandez-Boussard T, Burns CS, Wang NE
The Affordable Care Act reduces emergency department use by young adults: evidence from three States.
The authors tested the impact of the Affordable Care Act (ACA) on how young adults used ED services. They found that the largest relative decreases were found in women and blacks. This relative decrease in ED use implies a total reduction of more than 60,000 visits from young adults across three states in 2011.
AHRQ-funded; HS018558.
Citation: Hernandez-Boussard T, Burns CS, Wang NE .
The Affordable Care Act reduces emergency department use by young adults: evidence from three States.
Health Aff 2014 Sep;33(9):1648-54. doi: 10.1377/hlthaff.2014.0103.
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Keywords: Emergency Department, Health Insurance, Policy, Healthcare Cost and Utilization Project (HCUP), Young Adults
Ellimoottil C, Miller S, Ayanian JZ
Effect of insurance expansion on utilization of inpatient surgery.
The researchers examined the differential effect of the Massachusetts insurance expansion on the use of discretionary vs. nondiscretionary surgical procedures. They found that discretionary surgery increased 9.3 percent while nondiscretionary surgery decreased by 4.5 percent. The greatest increase in discretionary surgery was observed for nonwhite participants.
AHRQ-funded; HS018346.
Citation: Ellimoottil C, Miller S, Ayanian JZ .
Effect of insurance expansion on utilization of inpatient surgery.
JAMA Surg. 2014 Aug;149(8):829-36. doi: 10.1001/jamasurg.2014.857..
Keywords: Healthcare Cost and Utilization Project (HCUP), Surgery, Health Insurance, Healthcare Utilization
Schiltz NK, Finkelstein Rosenthal B, Crowley MA
Rehospitalization during the first year of life by insurance status.
The authors assessed the association of insurance status on infant rehospitalization in a population-based setting. They found that Medicaid coverage and being uninsured were strong predictors of rehospitalizations, with Medicaid bearing a disproportionate share of the economic burden. Normal birth weight infants had the lowest risk. They further found that jaundice and acute bronchiolitis were the leading causes of rehospitalization within 30 days and 1 year, respectively.
AHRQ-funded; HS000059.
Citation: Schiltz NK, Finkelstein Rosenthal B, Crowley MA .
Rehospitalization during the first year of life by insurance status.
Clin Pediatr 2014 Aug;53(9):845-53. doi: 10.1177/0009922814536924.
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Keywords: Health Insurance, Healthcare Cost and Utilization Project (HCUP), Hospital Readmissions, Newborns/Infants, Medicaid, Newborns/Infants