National Healthcare Quality and Disparities Report
Latest available findings on quality of and access to health care
Data
- Data Infographics
- Data Visualizations
- Data Tools
- Data Innovations
- All-Payer Claims Database
- Healthcare Cost and Utilization Project (HCUP)
- Medical Expenditure Panel Survey (MEPS)
- AHRQ Quality Indicator Tools for Data Analytics
- State Snapshots
- United States Health Information Knowledgebase (USHIK)
- Data Sources Available from AHRQ
Search All Research Studies
Topics
- (-) Access to Care (12)
- Behavioral Health (4)
- Cancer (2)
- Care Management (1)
- Community-Based Practice (1)
- Disparities (1)
- Elderly (1)
- Emergency Department (1)
- Healthcare Cost and Utilization Project (HCUP) (1)
- Healthcare Delivery (3)
- Healthcare Utilization (1)
- Health Insurance (2)
- Implementation (3)
- Medicaid (6)
- Medication (11)
- (-) Opioids (12)
- Pain (1)
- Palliative Care (1)
- Patient-Centered Healthcare (1)
- Policy (2)
- Practice Patterns (3)
- Primary Care (5)
- Racial and Ethnic Minorities (1)
- Rural Health (4)
- Social Stigma (1)
- Substance Abuse (9)
- Vulnerable Populations (1)
AHRQ Research Studies
Sign up: AHRQ Research Studies Email updates
Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 12 of 12 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
Enzinger AC, Ghosh K, Keating NL
Racial and ethnic disparities in opioid access and urine drug screening among older patients with poor-prognosis cancer near the end of life.
This research characterized racial and ethnic disparities and trends in opioid access and urine drug screening (UDS) among older patients dying of cancer, and to explore potential mechanisms. Among 18,549 non-Hispanic White (White), Black, and Hispanic Medicare decedents older than 65 years with poor-prognosis cancers, the authors examined 2007-2019 trends in opioid prescription fills and potency (morphine milligram equivalents [MMEs] per day [MMEDs]) near the end of life (EOL), defined as 30 days before death or hospice enrollment. They found that between 2007 and 2019, White, Black, and Hispanic decedents experienced steady declines in EOL opioid access and rapid expansion of UDS. Compared with White patients, Black and Hispanic patients were less likely to receive any opioid (Black, -4.3 percentage points; Hispanic, -3.6 percentage points) and long-acting opioids (Black, -3.1 percentage points; Hispanic, -2.2 percentage points). They also received lower daily doses (Black, -10.5 MMED; Hispanic, -9.1 MMED) and lower total doses (Black, -210 MMEs; Hispanic, -179 MMEs). Black patients were also more likely to undergo UDS (0.5 percentage points).
AHRQ-funded; HS024072.
Citation: Enzinger AC, Ghosh K, Keating NL .
Racial and ethnic disparities in opioid access and urine drug screening among older patients with poor-prognosis cancer near the end of life.
J Clin Oncol 2023 May 10; 41(14):2511-22. doi: 10.1200/jco.22.01413..
Keywords: Elderly, Opioids, Medication, Cancer, Racial and Ethnic Minorities, Disparities, Access to Care
Grove LR, Rao N, Domino ME
Are North Carolina clinicians delivering opioid use disorder treatment to Medicaid beneficiaries?
This study’s goal was to inform efforts to increase prescriptions of medications for opioid use disorder (MOUD) among Medicaid beneficiaries. A retrospective study of North Carolina licensed physicians, physician assistants, and nurse practitioners was conducted to estimate Medicaid participation prevalence among clinicians authorized to prescribe buprenorphine and to estimate the association between clinician characteristics and OUD care delivery to Medicaid beneficiaries. Outcomes looked for were indicators of any Medicaid professional claims and Medicaid claims data for buprenorphine and naltrexone. Licensure data from 2018 was merged with 2019 US Drug Enforcement Administration to identify clinicians who used the DEA waiver required to prescribe buprenorphine (n = 1714). Services by waivered clinicians to Medicare beneficiaries ranged from 67% of behavioral health clinicians to 82.9% of specialist physicians. Prevalence of prescribing buprenorphine to Medicaid beneficiaries ranged from 30.3% among specialist physicians to 51.6% among behavioral health clinicians.
AHRQ-funded; HS000032.
Citation: Grove LR, Rao N, Domino ME .
Are North Carolina clinicians delivering opioid use disorder treatment to Medicaid beneficiaries?
Addiction 2022 Nov;117(11):2855-63. doi: 10.1111/add.15854..
Keywords: Opioids, Substance Abuse, Behavioral Health, Vulnerable Populations, Medication, Access to Care, Medicaid
Wyse JJ, Mackey K, Lovejoy TI
Expanding access to medications for opioid use disorder through locally-initiated implementation.
The purpose of this study was to identify and describe locally- and internally-developed approaches to improve patient access to medication treatment for opioid use disorder (MOUD). The researchers utilized the Consolidated Framework for Implementation Research (CFIR) to guide qualitative interviews and ethnographic observations to examine the planning, design, and implementation of a locally-initiated process to expand access to MOUD. The study found that a self-appointed local team successfully developed and implemented a Primary Care-based Buprenorphine Clinic and E-Consult Service to expand access to MOUD to patients across the health care system, including national and local policy changes, identifying appropriate and widely supported models of care delivery and consultation, and increasing staff investment in the efforts by including them in collaborative planning and problem-solving. The study concluded that a local team can plan, develop and build new processes of care that are customized to meet local needs and contribute to long-term sustainability in the community.
AHRQ-funded; HS026370.
Citation: Wyse JJ, Mackey K, Lovejoy TI .
Expanding access to medications for opioid use disorder through locally-initiated implementation.
Addict Sci Clin Pract 2022 Jun 20;17(1):32. doi: 10.1186/s13722-022-00312-7..
Keywords: Opioids, Substance Abuse, Behavioral Health, Medication, Access to Care, Practice Patterns, Implementation
Meiselbach MK, Drake C, Saloner B
Medicaid managed care: access to primary care providers who prescribe buprenorphine.
This study examined variation in access to in-network buprenorphine-prescribing primary care providers that can treat opioid use disorder among Medicaid managed care enrollees. Approximately 32.2% of Medicaid enrollees had fewer than one in-network network buprenorphine-prescribing primary care providers per 100,000 county residents. There was on average a greater number of in-network buprenorphine-prescribing primary care providers in states with higher compared with lower overdose death rates, but most enrollees lived in areas with a shortage of these providers. The authors found that a 25 percent higher network participation rate by prescribers compared with nonprescribers could improve the probability that enrollees see a prescriber by approximately 25 percent.
AHRQ-funded; HS000029.
Citation: Meiselbach MK, Drake C, Saloner B .
Medicaid managed care: access to primary care providers who prescribe buprenorphine.
Health Aff 2022 Jun;41(6):901-10. doi: 10.1377/hlthaff.2021.01719..
Keywords: Medicaid, Primary Care, Access to Care, Medication, Care Management, Opioids, Substance Abuse, Behavioral Health
Enzinger AC, Ghosh K, Keating NL
US trends in opioid access among patients with poor prognosis cancer near the end-of-life.
This study looked at trends in opioid prescriptions for cancer patients near the end-of-life (EOL) defined as the 30 days before death or hospice enrollment. The authors looked at Medicare part D data from 2007 to 2017 for 270,632 Medicare fee-for-service decedents with poor prognosis cancers. During that time, the proportion of decedents with poor prognosis cancers receiving 1 or greater opioid prescriptions near EOL declined 15.5% and the proportion receiving 1 or greater long-acting opioid prescriptions declined 36.5% to 18.1%. The mean daily dose fell from 24.5%, from 85.6 morphine milligram equivalents per day (MMED) to 64.6. The total amount of opioids prescribed fell from 1,075 morphine milligram equivalents per decedent to 666 morphine milligram equivalents per decedents. At the same time, the proportion of patients with pain-related ED visits increase 50.8% from 13.2% to 19.9%.
AHRQ-funded; HS024072.
Citation: Enzinger AC, Ghosh K, Keating NL .
US trends in opioid access among patients with poor prognosis cancer near the end-of-life.
J Clin Oncol 2021 Sep 10;39(26):2948-58. doi: 10.1200/jco.21.00476..
Keywords: Cancer, Opioids, Palliative Care, Pain, Access to Care, Medication, Practice Patterns
Cole ES, DiDomenico E, Green S
The who, the what, and the how: a description of strategies and lessons learned to expand access to medications for opioid use disorder in rural America.
This study looked at the problems of treatment access for opioid use disorder (OUD) in rural areas within the United States. Providers must complete 8-24 hours of training to obtain the Drug Addiction Treatment Act (DATA) 2000 waiver to have the legal authority to prescribe buprenorphine. The authors executed 5 AHRQ-funded dissemination and implementation grants to study and address barriers to providing Medications for Opioid Use Disorder Treatment (MOUD), including psychosocial supports. Obtaining the DATA 2000 waiver was found to be just one component of meaningful treatment using MOUD, and there are other significant barriers that providers face daily. The researchers’ initiatives and common lessons learned across their grants are summarized and recommendations are offered how primary care providers can be better supported to expand access to MOUD across rural America.
AHRQ-funded.
Citation: Cole ES, DiDomenico E, Green S .
The who, the what, and the how: a description of strategies and lessons learned to expand access to medications for opioid use disorder in rural America.
Subst Abus 2021;42(2):123-29. doi: 10.1080/08897077.2021.1891492..
Keywords: Opioids, Medication, Primary Care, Rural Health, Substance Abuse, Access to Care
Salvador JG, Bhatt SR, Jacobsohn VC
Feasibility and acceptability of an online ECHO intervention to expand access to medications for treatment of opioid use disorder, psychosocial treatments and supports.
This study examined acceptability and feasibility of an online Extensions for Community Healthcare Outcomes (ECHO) model intervention developed to support rural primary care clinics to expand treatment and is part of a larger study tracking the impact of participation in this ECHO on expansion of medications for opioid use disorder (MOUD) in rural primary care. Using qualitative interviews and post-session questionnaires across 27 rural clinics in New Mexico, findings suggested evidence of feasibility and acceptability of MOUD ECHO to support expansion of this treatment.
AHRQ-funded; HS025345.
Citation: Salvador JG, Bhatt SR, Jacobsohn VC .
Feasibility and acceptability of an online ECHO intervention to expand access to medications for treatment of opioid use disorder, psychosocial treatments and supports.
Subst Abus 2021;42(4):610-17. doi: 10.1080/08897077.2020.1806184..
Keywords: Opioids, Substance Abuse, Behavioral Health, Medication, Access to Care, Rural Health, Primary Care, Patient-Centered Healthcare
Green TC, Donovan E, Klug B
Revisiting pharmacy-based naloxone with pharmacists and naloxone consumers in 2 states: 2017 perspectives and evolving approaches.
The authors sought to examine similarities and differences in experiences obtaining naloxone at the pharmacy over a 1-year period in 2 states, and to explore reactions from people with opioid use disorder, patients taking opioids for chronic pain, caregivers of opioid users, and pharmacists to communication tools and patient outreach materials designed to improve naloxone uptake. Through focus groups in Massachusetts and Rhode Island, they found that experiences dispensing naloxone are quickly evolving, and a greater diversity of patients are obtaining pharmacy naloxone. They concluded that persistent stigma-related concerns underscore the need for tools to help pharmacists offer naloxone, facilitate patient requests, and provide reassurance when getting naloxone.
AHRQ-funded; HS024021.
Citation: Green TC, Donovan E, Klug B .
Revisiting pharmacy-based naloxone with pharmacists and naloxone consumers in 2 states: 2017 perspectives and evolving approaches.
J Am Pharm Assoc (2003) 2020 Sep-Oct;60(5):740-49. doi: 10.1016/j.japh.2020.03.005..
Keywords: Opioids, Medication, Substance Abuse, Community-Based Practice, Healthcare Delivery, Social Stigma, Access to Care
Springer R, Marino M,, Bailey SR
Prescription opioid use patterns, use disorder diagnoses and addiction treatment receipt after the 2014 Medicaid expansion in Oregon.
This study compared the prevalence of receipt of opioid prescriptions and opioid use disorder (OUD), along with time from OUD diagnosis to medication-assisted treatment (MAT) receipt between Oregon residents who had been continuously insured by Medicaid, were newly insured after Medicaid expansion in 2014 or returned to Medicaid coverage after expansion.
AHRQ-funded; HS024270.
Citation: Springer R, Marino M,, Bailey SR .
Prescription opioid use patterns, use disorder diagnoses and addiction treatment receipt after the 2014 Medicaid expansion in Oregon.
Addiction 2019 Oct;114(10):1775-84. doi: 10.1111/add.14667..
Keywords: Opioids, Medication, Substance Abuse, Medicaid, Practice Patterns, Health Insurance, Access to Care, Policy
Cochran G, Cole ES, Warwick J
Rural access to MAT in Pennsylvania (RAMP): a hybrid implementation study protocol for medication assisted treatment adoption among rural primary care providers.
This paper reports the design and protocol of an implementation study seeking to advance availability of medication-assisted treatment (MAT) for opioid use disorder (OUD) in rural Pennsylvania counties for patients insured by Medicaid in primary care settings. Results showed an urgent need in the US to expand access to high quality, evidence-based OUD treatment, particularly in rural areas where capacity is limited for service delivery, in order to improve patient health and protect lives. Further, results of this study will provide needed evidence in the field for appropriate methods for implementing MAT among a large number of rural primary care providers.
AHRQ-funded; HS025072.
Citation: Cochran G, Cole ES, Warwick J .
Rural access to MAT in Pennsylvania (RAMP): a hybrid implementation study protocol for medication assisted treatment adoption among rural primary care providers.
Addict Sci Clin Pract 2019 Aug 1;14(1):25. doi: 10.1186/s13722-019-0154-4..
Keywords: Opioids, Substance Abuse, Rural Health, Medication, Access to Care, Implementation, Primary Care, Healthcare Delivery, Medicaid
Cole ES, DiDomenico E, Cochran G
The role of primary care in improving access to medication-assisted treatment for rural Medicaid enrollees with opioid use disorder.
The authors examined the degree to which rural residents with opioid use disorder (OUD) are engaged with primary care providers (PCPs); they also described the role of rural PCPs in medication-assisted treatment (MAT) delivery, and estimated the association between enrollee distance to MAT prescribers and MAT utilization. They concluded that PCP utilization among rural Medicaid enrollees diagnosed with OUD is high, presenting a potential intervention point to treat OUD, particularly if the enrollee's PCP is located nearer than their MAT prescriber.
AHRQ-funded; HS025072.
Citation: Cole ES, DiDomenico E, Cochran G .
The role of primary care in improving access to medication-assisted treatment for rural Medicaid enrollees with opioid use disorder.
J Gen Intern Med 2019 Jun;34(6):936-43. doi: 10.1007/s11606-019-04943-6..
Keywords: Opioids, Substance Abuse, Rural Health, Medication, Access to Care, Implementation, Primary Care, Healthcare Delivery, Medicaid