Publications by authors named "Thomas Stopka"

Objectives: As carceral settings increasingly offer medications for opioid use disorders (MOUD), community-based providers will need to navigate relationships with correctional agencies to ensure continuity of MOUD upon release. Although collaboration has been identified as critical between agencies, limited research is available that details how providers can work with jails. We describe the perspectives of MOUD providers about their experiences collaborating with jails that had recently begun to offer MOUD.

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Background: Prescriber-patient communication plays a crucial role in understanding patients' needs, while reducing risks for developing an opioid use disorder (OUD), yet research on this is sparse. As such, the need to understand healthcare providers' skills, comfort, and confidence when discussing opioids with patients and other providers is an important step in balancing patients' needs from a pain perspective and risks from an OUD perspective.

Method: We interviewed 32 Massachusetts providers (physicians, physician associates, nurse practitioners, and dental practitioners) to assess their communication strategies with patients and other providers.

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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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Illicitly manufactured fentanyl within the drug supply has substantially increased opioid-related overdose deaths and driven infectious disease outbreaks among people who use drugs (PWUD). Local jurisdictions often lack the data and tools necessary to detect and translate such moments into actionable and effective responses. Informed by a risk environment framework, this case study adopted a mixed-methods design spanning two rapid assessment studies with PWUD in Lowell (n = 90) and Lawrence (n = 40), Massachusetts, during an HIV outbreak (2017, Study 1) and following the outbreak (2019, Study 2).

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Importance: The HEALing Communities Study (HCS) evaluated the effectiveness of the Communities That HEAL (CTH) intervention in preventing fatal overdoses amidst the US opioid epidemic.

Objective: To evaluate the impact of the CTH intervention on total drug overdose deaths and overdose deaths involving combinations of opioids with psychostimulants or benzodiazepines.

Design, Setting, And Participants: This randomized clinical trial was a parallel-arm, multisite, community-randomized, open, and waitlisted controlled comparison trial of communities in 4 US states between 2020 and 2023.

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Hepatitis C virus (HCV) disproportionately affects people who inject drugs (PWID). Although HCV has become universally curable since the arrival of direct-acting antivirals, barriers exist to facilitating care and cure in this historically hard-to-reach population, including limited testing and healthcare services and healthcare stigma, issues that are compounded in rural areas. Telehealth is effective in increasing access to HCV care and cure, but innovative approaches of testing and care are required to fully address the need among rural PWID, which led to our study examining a mobile telehealth model for treating HCV.

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The ongoing hepatitis C virus (HCV) epidemic in the United States disproportionately affects rural people who inject drugs (PWID). This study explores the HCV risk environment in rural northern New England by examining PWID experiences and perceptions of HCV and injection equipment-sharing practices. We performed a thematic analysis on semi-structured interviews conducted with 21 adults with a history of injection drug use from rural New Hampshire, Vermont, and Massachusetts between April 2018 and August 2019.

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To inform public health interventions, researchers have developed models to forecast opioid-related overdose mortality. These efforts often have limited overlap in the models and datasets employed, presenting challenges to assessing progress in this field. Furthermore, common error-based performance metrics, such as root mean squared error (RMSE), cannot directly assess a key modeling purpose: the identification of priority areas for interventions.

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Background: Incarceration provides an opportunity for health interventions, including opioid use disorder (OUD) treatment and prevention of opioid-related overdoses post-release. All FDA-approved forms of medication for OUD (MOUD) treatment were mandated in several Massachusetts jails in 2019, with some jails offering extended-release buprenorphine (XR-Bup). Little is known about patient perspectives on and experiences with XR-Bup in carceral settings.

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Article Synopsis
  • Illicitly manufactured fentanyl is a major cause of opioid overdose deaths in the U.S., prompting this study to explore harm reduction strategies among rural drug users.
  • The research included 349 qualitative interviews across 10 states, focusing on drug use behaviors and specific aspects of fentanyl exposure.
  • Participants employed various strategies to minimize overdose risks, such as avoiding certain drugs, using fentanyl test strips, and having naloxone on hand, highlighting the need for improved access to harm reduction resources.
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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: Involuntary civil commitment (ICC) is a court-mandated process to place people who use drugs (PWUD) into substance use treatment. Research on ICC effectiveness is mixed, but suggests that coercive drug treatment like ICC is harmful and can produce a number of adverse outcomes. We qualitatively examined the experiences and outcomes of ICC among PWUD in Massachusetts.

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Importance: Local-level data are needed to understand whether the relaxation of X-waiver training requirements for prescribing buprenorphine in April 2021 translated to increased buprenorphine treatment.

Objective: To assess whether relaxation of X-waiver training requirements was associated with changes in the number of clinicians waivered to and who prescribe buprenorphine for opioid use disorder and the number of patients receiving treatment.

Design, Setting, And Participants: This serial cross-sectional study uses an interrupted time series analysis of 2020-2022 data from the HEALing Communities Study (HCS), a cluster-randomized, wait-list-controlled trial.

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Background: Xylazine, an adulterant in local drug supplies, has been detected in approximately 30% of opioid samples submitted for testing in Massachusetts. A better understanding of local risks, harms, and use preferences is needed to combat xylazine-related impacts on local communities.

Methods: Through the STOP-OD Lowell study, we aimed to assess local xylazine awareness through in-depth interviews with local community stakeholders (n = 15) and local people who use drugs (PWUD; n = 15) and surveys with local PWUD (n = 94).

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Background: Fatal opioid-related overdoses (OOD) continue to be a leading cause of preventable death across the US. Opioid Overdose Education and Naloxone Distribution programs (OENDs) play a vital role in addressing morbidity and mortality associated with opioid use, but access to such services is often inequitable. We utilized a geographic information system (GIS) and spatial analytical methods to inform prioritized placement of OEND services in Massachusetts.

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Article Synopsis
  • The study examines a community-based intervention aimed at reducing opioid-related overdose deaths by increasing the adoption of evidence-based practices including overdose education and naloxone distribution, medication treatment for opioid use disorder, and prescription safety.
  • In a cluster-randomized trial, 67 communities across Kentucky, Massachusetts, New York, and Ohio were assigned to either receive the intervention or serve as a control group during a period marked by the COVID-19 pandemic and an increase in fentanyl overdoses.
  • Results showed no significant difference in opioid-related overdose death rates between the intervention and control groups, with both averaging similar rates, indicating that the community-engaged strategies did not have a measurable impact during the study period.
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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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Article Synopsis
  • Accurate estimates of drug use and related health issues among marginalized populations, especially persons who use drugs (PWUD) in rural areas, are essential for effective intervention and understanding health disparities.* -
  • The study used respondent-driven sampling (RDS) to recruit PWUD and evaluated the assumptions behind RDS to ensure the reliability of its prevalence estimates, analyzing various drug usage variables and health indicators among participants.* -
  • Findings indicated a median participant age of 34, with opioids being the most commonly used drug; however, recruitment chains often lacked sufficient length for reliable sample representation, and different weighting methods showed minimal differences in prevalence estimates.*
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Background: We introduce the concept of harm reduction capital (HRCap) as the combination of knowledge, resources, and skills related to substance use risk reduction, which we hypothesize to predict MOUD use and opioid overdose. In this study, we explored the interrelationships between ethnicity, HRCap, nonfatal overdose, and MOUD use among PWUD.

Methods: Between 2017 and 2019, people who currently or in the past used opioids and who lived in Massachusetts completed a one-time survey on substance use history, treatment experiences, and use of harm reduction services.

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Importance: Buprenorphine significantly reduces opioid-related overdose mortality. From 2002 to 2022, the Drug Addiction Treatment Act of 2000 (DATA 2000) required qualified practitioners to receive a waiver from the Drug Enforcement Agency to prescribe buprenorphine for treatment of opioid use disorder. During this period, waiver uptake among practitioners was modest; subsequent changes need to be examined.

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Dried blood spots (DBS) have emerged as a promising alternative to traditional venous blood for hepatitis C virus (HCV) testing. However, their capacity to accurately reflect the genetic diversity of HCV remains poorly understood. We employed deep sequencing and advanced phylogenetic analyses on paired plasma and DBS samples from two common subtypes to evaluate the suitability of DBS for genomic surveillance.

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Introduction: Opioid-related overdose mortality rates have increased sharply in the U.S. over the past two decades, and inequities across racial and ethnic groups have been documented.

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Synopsis of recent research by authors named "Thomas Stopka"

  • - Thomas Stopka's recent research primarily focuses on the intersection of substance use, particularly opioid and stimulant use, and its impact on public health, emphasizing harm reduction strategies and intervention effectiveness in rural communities affected by the overdose crisis
  • - Key findings from his studies highlight the critical need for innovative approaches to healthcare access, such as mobile telehealth models for treating Hepatitis C among people who inject drugs (PWID), and insights into community-level interventions like the Communities That HEAL initiative aimed at reducing overdose mortality
  • - His work also delves into the lived experiences and perceptions of drug users regarding treatment options and societal stigma, shedding light on challenges like involuntary civil commitment and the implications of xylazine presence in local drug markets