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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.
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1 to 4 of 4 Research Studies DisplayedRaven MC, Guzman D, Chen AH
Out-of-network emergency department use among managed Medicaid beneficiaries.
The researchers examined factors associated with out-of-network ED use among Medicaid beneficiaries. They concluded that there are a number of factors related to out-of-network ED use, including the proximity and density of out-of-network EDs, race and ethnicity, a prior history of out-of-network ED use, and individuals' connection to primary care.
AHRQ-funded; HS021700.
Citation: Raven MC, Guzman D, Chen AH .
Out-of-network emergency department use among managed Medicaid beneficiaries.
Health Serv Res 2017 Dec;52(6):2156-74. doi: 10.1111/1475-6773.12604.
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Keywords: Emergency Department, Emergency Medical Services (EMS), Medicaid, Primary Care, Social Determinants of Health
O'Malley JP, O'Keeffe-Rosetti M, Lowe RA
Health care utilization rates after Oregon's 2008 Medicaid expansion: within-group and between-group differences over time among new, returning, and continuously insured enrollees.
The authors sought to assess changes in emergency department, primary care, mental and behavioral health care, and specialist care visit rates among individuals gaining Medicaid over 24 months postinsurance gain and also to evaluate the association of previous insurance with utilization. They found that primary care visit rates in both newly and returning insured individuals significantly exceeded those of the continuously insured in months 4 through 12, but were not significantly elevated in the second year. In contrast, emergency department utilization rates were significantly higher in returning insured compared with newly or continuously insured individuals and remained elevated over time. New visits to primary and specialist care were higher among those who gained Medicaid compared with the continuously insured throughout the study period. They concluded that expansion evaluations should allow for rate stabilization.
AHRQ-funded; HS021522.
Citation: O'Malley JP, O'Keeffe-Rosetti M, Lowe RA .
Health care utilization rates after Oregon's 2008 Medicaid expansion: within-group and between-group differences over time among new, returning, and continuously insured enrollees.
Med Care 2016 Nov;54(11):984-91. doi: 10.1097/mlr.0000000000000600.
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Keywords: Medicaid, Healthcare Delivery, Healthcare Utilization, Emergency Department, Emergency Medical Services (EMS)
Kindermann DR, Mutter RL, Houchens RL
AHRQ Author: Mutter RL
The transfer instability index: a novel metric of emergency department transfer relationships.
The researchers developed the “transfer instability index” to describe sending hospitals’ relationships with receiving hospitals. They found that emergency departments with a greater share of publicly insured patients had a greater transfer instability index, which may indicate less stable, protocolized, and regionalized transfer relationships.
AHRQ-funded; 290201300002C.
Citation: Kindermann DR, Mutter RL, Houchens RL .
The transfer instability index: a novel metric of emergency department transfer relationships.
Acad Emerg Med 2015 Feb;22(2):166-71. doi: 10.1111/acem.12589..
Keywords: Emergency Medical Services (EMS), Emergency Department, Transitions of Care, Medicaid, Medicare
Malhotra K, Baltrus P P, Zhang S
Geographic and racial variation in asthma prevalence and emergency department use among Medicaid-enrolled children in 14 southern states.
Using 2007 Medicaid claims data from 556 counties in 14 southern states, the researchers described the local area variation in 1-year asthma prevalence rates, emergency department visit rates, and racial disparity rate ratios. They found much local area variation in asthma prevalence and asthma ED visit rates among Medicaid-enrolled children. Between black and white children, more counties had higher prevalence of asthma and higher ED visit rates among blacks.
AHRQ-funded; HS022444; HS019470
Citation: Malhotra K, Baltrus P P, Zhang S .
Geographic and racial variation in asthma prevalence and emergency department use among Medicaid-enrolled children in 14 southern states.
J Asthma. 2014 Nov;51(9):913-21. doi: 10.3109/02770903.2014.930479..
Keywords: Asthma, Medicaid, Social Determinants of Health, Emergency Department, Emergency Medical Services (EMS)