Publications by authors named "Korthuis P"

Background: The COVID-19 pandemic spurred relaxation of opioid treatment program (OTP) in-person daily dosing requirements. This policy change was met with widespread enthusiasm by patients and providers and did not increase illicit opioid use, overdose, or medication diversion. However, it is not known whether the policy change was effective at mitigating the COVID-19 public health emergency among people with opioid use disorder (OUD) receiving treatment at OTPs.

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Background: Insurance possession facilitates healthcare engagement. Though people who use drugs (PWUD) experience substantial health risks, a large proportion are un/underinsured. Medicaid/other insurance eligibility varies by state and criminal legal involvement (CLI), and a better understanding of their association is important to inform policy.

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Background: The increase in opioid use disorder among young, nonurban people has fueled sharp rises in hepatitis C virus (HCV) infections. Innovative treatment models are needed that circumvent healthcare system barriers for people who use drugs (PWUD), particularly in rural areas. The Oregon HOPE TeleHCV study randomized PWUD living with HCV in rural Oregon to peer-facilitated and streamlined telemedicine HCV treatment (Peer TeleHCV) versus enhanced usual care (EUC) and assessed sustained virologic response at 12 weeks post treatment (SVR12).

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New legal frameworks for supervised psychedelic services are emerging, with Oregon and Colorado implementing programs to train and license psilocybin facilitators. This study describes Oregon's early psilocybin facilitator workforce and assesses state-approved training programs. The Open Psychedelic Evaluation Nexus (OPEN) reviewed Oregon Health Authority-approved training programs and surveyed facilitators who had completed or were enrolled in these programs between July and November 2023.

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Introduction: People who use drugs (PWUD) are at risk of HIV infection, but the frequency and distribution of transmission-associated behaviors within rural communities is not well understood. Further, while interventions designed to more explicitly affirm individuals' sexual orientation and behaviors may be more effective, descriptions of behavior variability by orientation are lacking. We sought to describe how disease transmission behaviors and overdose risk vary by sexual orientation and activity among rural PWUD.

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Background: There is great interest in intensive primary care interventions to address high utilization among medically and socially complex patients. How patients experience these interventions has received less attention.

Objective: To better understand patients' experience of intensive primary care, we interviewed patients receiving care from the Streamlined Unified Meaningfully Managed Interdisciplinary Team (SUMMIT), an ambulatory intensive care intervention at an urban federally qualified health center.

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Article Synopsis
  • The study is focused on the increasing issue of hospitalizations related to opioid use disorder (OUD), comparing standard addiction consultation services to a specific treatment involving a long-lasting buprenorphine injection to improve post-hospital care engagement.
  • Patients in six U.S. hospitals who were not on medication for OUD before admission will be randomly assigned either to continue usual care or receive a single dose of a 28-day extended-release buprenorphine upon discharge.
  • Outcomes will be assessed at multiple follow-up points, with the primary goal of seeing if the XR-BUP group shows higher engagement in ongoing treatment 34 days after leaving the hospital, while also monitoring for safety and various secondary effects.
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Article Synopsis
  • In recent rural U.S. studies, individuals who use drugs (PWUD) are increasingly combining opioids with stimulants like methamphetamine and cocaine.
  • Among 2,705 PWUD surveyed, 74% reported using both opioids and stimulants, with 76% having undergone hepatitis C virus (HCV) testing.
  • Those who used opioids alone had lower rates of HCV testing, and those using both opioids and stimulants were less likely to have received anti-HCV medication compared to those using other drugs.
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Background: Hepatitis C virus (HCV) elimination requires treating people who use drugs (PWUD), yet fewer than 10% of PWUD in the United States access HCV treatment and access is especially limited in rural communities.

Methods: We randomized PWUD with HCV viremia and past 90-day injection drug or non-prescribed opioid use in seven rural Oregon counties to peer-assisted telemedicine HCV treatment (TeleHCV) versus peer-assisted referral to local providers (enhanced usual care; EUC). Peers supported screening and pre-treatment laboratory evaluation for all participants and facilitated telemedicine visits, medication delivery, and adherence for TeleHCV participants.

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Background: Over the last two decades, houselessness and drug-related epidemics both have expanded from urban to rural regions across the United States (US). However, our understanding of the relationship between rural houselessness, drug use, and drug-related harms has not kept pace. The current study addresses this gap by describing houselessness among a large cohort of people who use drugs (PWUD) from rural communities across 10 states.

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Article Synopsis
  • Previous studies showed limited evidence on how buprenorphine versus methadone affects different groups of people using opioids, particularly with the rise of fentanyl use.
  • The study aimed to compare the risks of treatment discontinuation and mortality between individuals using buprenorphine/naloxone versus those using methadone for opioid use disorder in British Columbia from 2010 to 2020.
  • Findings revealed that users of buprenorphine/naloxone had a significantly higher likelihood of discontinuing treatment after 24 months compared to those on methadone, with 88.8% versus 81.5% discontinuing, indicating that methadone may be more effective in retaining users.
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Hepatitis C (HCV) treatment for people who use drugs (PWUD) decreases injection drug use and injection equipment sharing. We examined changes in injection drug use and injection equipment sharing following HCV treatment in a randomized trial comparing peer-assisted telemedicine for HCV treatment (TeleHCV) versus peer-assisted usual care in rural PWUD. We hypothesize that TeleHCV reduces risky behaviors and peers facilitate this change.

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Emerging legal frameworks in Oregon and Colorado license facilitators to support adults receiving psychedelic services. The current legal frameworks are silent regarding facilitators' personal experience with psychedelics. An e-Delphi process recruited 36 experts with at least 5 years' experience facilitating psilocybin experiences in ceremonial settings, indigenous practices, or clinical trials.

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Introduction: The opioid crisis and the hepatitis C virus epidemic perpetuate and potentiate each other in a syndemic with escalating morbidity. Policy-driven funding can help resolve the syndemic through collaborative solutions that rapidly translate evidence-based interventions into real-world applications.

Methods: We report development and programmatic evaluation of Peer-Assisted Telemedicine for Hepatitis C (PATHS), which utilizes State Opioid Response (SOR) funding to scale-up a positive randomized trial of peer-assisted telemedicine HCV treatment.

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Introduction: At the beginning of the COVID-19 pandemic, federal agencies permitted telehealth initiation of buprenorphine treatment for opioid use disorder (OUD) without in-person assessment. It remains unclear how telehealth-only buprenorphine treatment impacts time to discontinuation and patient reported treatment outcomes.

Methods: A longitudinal observational cohort study conducted September 2021 through March, 2023 enrolled participants with OUD initiating buprenorphine (≤ 45 days) with internet and phone access in Oregon and Washington.

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Background: The United States' (US) opioid overdose epidemic has evolved into a combined stimulant/opioid epidemic, a pattern driven in part by mitigating opioid overdose risk, variable substance availability, and personal preferences. This study aimed to investigate the association between self-reported substance preference (heroin or methamphetamine) and behavioral/health outcomes among individuals who used both heroin and methamphetamine in the rural US.

Methods: The Rural Opioid Initiative is a consortium of 8 research cohorts from 10 states and 65 rural counties that recruited individuals reporting past 30-day injection of any substance or opioid substance use by any route from 1/2018 to 3/2020.

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Background: Medications for opioid use disorder (MOUD) including buprenorphine are effective, but underutilized. Rural patients experience pronounced disparities in access. To reach rural patients, the US Department of Veterans Affairs (VA) has sought to expand buprenorphine prescribing beyond specialty settings and into primary care.

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Objective: To describe a learning health care system research process designed to increase buprenorphine prescribing for the treatment of opioid use disorder (OUD) in rural primary care settings within U.S. Department of Veterans Affairs (VA) treatment facilities.

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Background: Patients with opioid use disorder (OUD) experience various forms of stigma at the individual, public, and structural levels that can affect how they access and engage with healthcare, particularly with medications for OUD treatment. Telehealth is a relatively new form of care delivery for OUD treatment. As reducing stigma surrounding OUD treatment is critical to address ongoing gaps in care, the aim of this study was to explore how telehealth impacts patient experiences of stigma.

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Article Synopsis
  • Voter initiatives in Oregon and Colorado allow for psilocybin services but lack safety and outcome monitoring systems.
  • A study aimed to create best practice measures for these services, involving 36 experts in the psilocybin field through a multi-phase e-Delphi process.
  • The experts identified and prioritized 11 process measures, 11 outcome measures, and 17 structure measures that could help ensure safety, quality, and effectiveness in psilocybin service delivery.
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Article Synopsis
  • Efforts to distribute naloxone are improving overdose reversal abilities, yet individuals using drugs in rural areas are often hesitant to call 911 due to fears of legal repercussions and stigma.
  • The Rural Opioid Initiative involves eight studies in various rural US communities, analyzing how contextual factors impact drug use and health behaviors through qualitative interviews with drug users.
  • Findings reveal that many respondents prefer non-evidence-based methods for reversing overdoses, emphasizing the need for better education on effective strategies and addressing concerns about law enforcement to encourage seeking emergency help.
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