Safety strategies and harm reduction for methamphetamine users in the era of fentanyl contamination: A qualitative analysis.

INTRODUCTION: In the United States, methamphetamine use is increasing and the context of its use has changed, with reports of illicitly manufactured fentanyl being mixed with methamphetamine (either deliberately or inadvertently). We explore risk-mitigating actions taken by people who use drugs to protect their health when using methamphetamine in that context. METHODS: We conducted qualitative interviews with 48 adults (18+) who used methamphetamine in the past three months at two sites in Nevada, USA and two sites in New Mexico, USA. Interviews were recorded, transcribed, and analyzed using thematic analysis. RESULTS: Respondents described two rationales for employing harm reduction strategies. First, to prevent harm from methamphetamine containing illicit fentanyl, and second, to maintain their general wellbeing while using methamphetamine. Regarding methamphetamine containing illicit fentanyl, our findings highlight how respondents employ primary strategies like buying from trusted sources and secondary strategies such as spotting and selective use of harm reduction tools (i.e., fentanyl test strips) to reduce risks. To maintain their general wellbeing, participants reduced their use of methamphetamine as reasonably as possible, and used other substances like marijuana and alcohol alongside methamphetamine to counter the unwanted side effects of methamphetamine (i.e., hallucinations and paranoia). Use of these harm reduction strategies varied within situational and social contexts, and respondents usually developed these strategies based on their lived experiences. CONCLUSION: Our findings uniquely demonstrate that people who use methamphetamine prioritize community driven, trust-based strategies within their social networks to mitigate risks in a fentanyl-contaminated drug environment. Additionally, our results indicate that harm reduction behaviors are influenced by multilevel risk environments, which include social, physical, economic, and political factors. Overall, these results highlight the potential for targeted interventions at the network level, which are responsive to complexities and shifts in drug market dynamics- such as illicit fentanyl in methamphetamine.

Loneliness and fearfulness are associated with non-fatal drug overdose among people who inject drugs.

BACKGROUND: People who inject drugs (PWID) experience high rates of drug overdose death with the risk of mortality increasing after each non-fatal event. Racial differences exist in drug overdose rates, with higher rates among Black people who use drugs. Psychological factors may predict drug overdose. METHODS: Cross-sectional data from a survey administered to PWID in Baltimore, MD enrolled in a social network-based intervention were analyzed. Linear regression methods with generalized estimating equations were used to analyze data from indexes and network members to assess for psychological factors significantly associated with self-reported number of lifetime drug overdoses. Factors associated with number of overdoses were assessed separately by race. RESULTS: Among 111 PWID enrolled between January 2018 and January 2019, 25.2% were female, 65.7% were Black, 98.2% reported use of substances in addition to opioids, and the mean age was 49.0 ± 8.3 years. Seventy-five individuals (67.6%) had a history of any overdose with a mean of 5.0 ± 9.7 lifetime overdoses reported. Reports of feeling fearful (ß = 9.74, P = 0.001) or feeling lonely all of the time (ß = 5.62, P = 0.033) were independently associated with number of drug overdoses. In analyses disaggregated by race, only the most severe degree of fearfulness or loneliness was associated with overdose among Black participants, whereas among White participants, any degree of fearfulness or loneliness was associated with overdose. CONCLUSIONS: In this study of PWID loneliness and fearfulness were significantly related to the number of reported overdose events. These factors could be targeted in future interventions.

What makes a peer? Characteristics of certified peer recovery support specialists in an emergency department-based intervention.

Providing brief interventions by certified peer recovery support specialists (CPRSS) in the emergency department (ED) following a drug related visit is a promising method of service engagement and has garnered national attention. This study examines CPRSS's perceptions of the qualities that enable them to deliver interventions in the ED. We conducted qualitative interviews with 14 CPRSSs working in EDs. Interview topics included how the participants became involved with CPRSS work, experiences working in the ED, how the ED differs from other settings, and what interactions with patients look like. Interviews were digitally recorded, transcribed, and analyzed for emerging categories. Three categories were identified relating to CPRSS work: (1) how they approach peer work, (2) inherent qualities required to do the work, regardless of the setting, and (3) context-specific skills required to do the work in the ED. When describing their approach to this work, participants talked about CPRSS work as their life calling and their passion. Participants also identified certain qualities that all CPRSS workers possess, regardless of the setting, including the ability to build rapport, strong listening skills, and a shared lived experience. Lastly, participants identified how specific hard and soft skills help them to navigate organizational and structural challenges in the ED. The unique conditions of the ED and the required qualities of a CPRSS should be considered when implementing an ED-based intervention.

Prevalence of fentanyl in methamphetamine and cocaine samples collected by community-based drug checking services.

BACKGROUND: Overdose deaths involving stimulants and opioids simultaneously have raised the specter of widespread contamination of the stimulant supply with fentanyl. METHODS: We quantified prevalence of fentanyl in street methamphetamine and cocaine, stratified by crystalline texture, analyzing samples sent voluntarily to a public mail-in drug checking service (May 2021-June 2023). Samples from 77 harm reduction programs and clinics originated in 25 US states. Sample donors reported expected drug and physical descriptions. Substances were identified by gas chromatography-mass spectrometry. Negative binomial models were used to calculate fentanyl prevalence, adjusting for potential confounders related to sample selection. We also examined if xylazine changed donors' accuracy of detecting fentanyl. RESULTS: We analyzed 718 lab-confirmed samples of methamphetamine (64%) and cocaine (36%). The adjusted prevalence of fentanyl was 12.5% (95% CI: 2.2%, 22.9%) in powder methamphetamine and 14.8% (2.3%, 27.2%) in powder cocaine, with notable geographic variation. Crystalline forms of both methamphetamine (Chisq=57, p<0.001) and cocaine (Chisq=18, p<0.001) were less likely to contain fentanyl: less than 1% of crystal methamphetamine (2/276) and no crack cocaine (0/53). Heroin was present in 6.6% of powder cocaine samples. Xylazine reduced donors' ability to detect fentanyl, with correct classification dropping from 92% to 42%. CONCLUSIONS: Fentanyl was detected primarily in powder forms of methamphetamine and cocaine. Recommended interventions include expanding community-based drug checking, naloxone and fentanyl test strip distribution for people who use stimulants , and supervised drug consumption sites. New strategies to dampen variability in street drug composition are needed to reduce inadvertent fentanyl exposure.

A qualitative study of interest in and preferences for potential medications to treat methamphetamine use disorder.

INTRODUCTION: We examined acceptability of and preferences for potential medications for treating methamphetamine use disorder (MUD) among people who use methamphetamine and examined how benefits and drawbacks of methamphetamine use affect perceived acceptability and preferences. METHODS: We conducted qualitative interviews as part of a larger study in 2019-2020. The interview assessed patterns of substance use (including methamphetamine), benefits and drawbacks of methamphetamine use, and interest in a medication to treat MUD. Analysis used an inductive thematic approach, guided by three primary questions: (1) would participants be interested in taking a potential medication for MUD?; (2) what effects would they would like from such a medication?; and (3) what would their ideal treatment route and schedule be (e.g. daily pill, monthly injection)?. RESULTS: We interviewed 20 people reporting methamphetamine use in the past 3 months (10 from Reno, Nevada, USA and 10 from Rio Arriba County, New Mexico, USA). Seven used exclusively methamphetamine, while thirteen used other substances in addition to methamphetamine. Most were enthusiastic about a potential medication to treat MUD. Of those who were not interested (n = 5), all indicated no current concerns about their methamphetamine use. Perceived functional benefits of methamphetamine use (i.e., energy, counteracting opioid sedation, and improved social and emotional wellbeing) informed preferences for a replacement-type medication that would confer the same benefits while mitigating drawbacks (e.g., psychosis, hallucinations, withdrawal). Opinions on preferred dosing varied, with some preferring longer acting medications for convenience, while others preferred daily dosing that would align with existing routines. CONCLUSION: Participants were excited about a potential for a medication to treat MUD. Their preferences were informed by the functional role of methamphetamine in their lives and a desire to maintain the stimulant effects while mitigating harms of illicit methamphetamine. Treatment outcomes that emphasize functioning and wellbeing, rather than abstinence, should be explored.

Adverse childhood experiences, antenatal stressful life events, and marijuana use during pregnancy: A population-based study.

Cumulative exposure to adverse childhood experiences (ACEs) and antenatal stressful life events (ASLEs) are independently associated with marijuana use during pregnancy. However, research has not explored how both exposures may influence marijuana use jointly. Assessing the joint associations of ACEs and recent ASLEs on marijuana use can identify people who may benefit from early intervention. Data come from the Nevada Pregnancy Risk Assessment Monitoring System, 2017-2020 (N = 2483). We assessed eight measures of ACEs before age 18 and fourteen measures of ASLEs twelve months before giving birth. Generalized estimating equations estimated the direct and joint associations (additive and multiplicative interaction) of ACEs and ASLEs on marijuana use during pregnancy. 9.8% used marijuana during the most recent pregnancy. Compared to people who reported no ACEs, those reporting 1 ACE (adjusted prevalence ratio[aPR] = 1.96, 95% confidence interval [CI] = 1.30-2.94), 3 ACEs (aPR = 3.58, 95%CI = 2.69-4.77), and 4+ ACEs (aPR = 3.67, 95%CI = 2.36-5.72) were more likely to use marijuana. Compared to people reporting no ASLEs, those reporting 4+ ASLEs (aPR = 3.12, 95% CI = 1.64-5.92) were more likely to use marijuana. There was evidence of interaction for high ACE and ASLE exposure on an additive scale. ACEs and ASLEs were independently associated with marijuana use during pregnancy, and there was evidence of additive interaction. Screening for ACEs and ASLEs during pregnancy, referrals to appropriate behavioral health services, and trauma-informed approaches are important to address marijuana use during pregnancy.

Protective Environmental Factors and Opioid Use Among Sexual Minority Youth.

Objectives: Nonmedical use of prescription opioids (NMUPO) is a pressing public health concern and affects sexual minority youth (SMY) at greater rates than heterosexual youth. We investigated whether protective environmental factors-(1) Human Rights Campaign's state equality index (SEI) and (2) supportive school environments for LGBTQ youth, influenced NMUPO among SMY and non-SMY students. Methods: We combined data from the 2017-2019 Youth Risk Behavior Survey, 2016-2018 School Health Profiles, state-level socio-demographic and SEI data across 24 states (N=156,149). Generalized linear mixed models examined associations between (1) SEI and (2) supportive school environments for LGBTQ youth, with NMUPO, accounting for clustering at the school-and state-level. Results: Before adjustment, we found that youth in states with higher SEI were significantly less likely to engage in NMUPO compared to students in states with lower SEI, a relationship that became non-significant after adjustment. After adjusting for individual-and state-level indicators, SMY in states with supportive school environments for LGBTQ youth were less likely to engage in NMUPO. Conclusions: Supportive school environments for LGBTQ youth may play an important role in the health of SMY. Establishing more inclusive policies and supportive environments within schools may reduce NMUPO among SMY.

Characteristics of Individuals Seen as Sources of Social Support in Populations at Increased Risk for HIV.

Access to social support from one's social network can serve as a protective factor against HIV infection; however, research exploring the availability of support in diverse populations that include high proportions of people at increased risk for HIV and the characteristics of network members associated with access to such support is limited. Multi-level dyadic analyses of social network data collected from women at risk for HIV and their network members reveal which individual and relationship characteristics of network members are associated with providing emotional, material, and/or health informational support. Results indicate that access to all three types of support was associated with a network member being a friend, a member of a participant's 'core' group, someone whose opinion matters to the respondent, and the respondent trusting them. These findings have implications for interventions designed to increase access to support among individuals at risk for HIV.

Social support and the effects of the COVID-19 pandemic among a cohort of people living with HIV (PLWH) in Western Kenya.

As coronavirus disease (COVID-19) was declared a pandemic in 2020, countries around the world implemented various prevention strategies, such as banning of public and social gatherings, restriction in movement, etc. These efforts may have had a deleterious effect on already vulnerable populations, including people living with HIV (PLWH). PLWH were concerned about contracting COVID-19, the impact of COVID-19 on their social networks that provide social support, and the continued availability of antiretroviral medications during the pandemic. In addition, their mental health may have been exacerbated by the pandemic. The purpose of this study was to explore pandemic-related concerns among a cohort of PLWH in Kenya and investigate social support factors associated with symptoms of depression and anxiety. This study is part of a larger cohort study that recruited from two clinics in Western Kenya. Data are drawn from 130 PLWH who participated in two phone surveys about experiences during the pandemic in 2020 and 2021. Participants reported a variety of concerns over the course of the pandemic and we documented statistically significant increases in symptoms of depression and anxiety over time, which affected some participants' ability to adhere to their antiretroviral medication. However, a small but statistically significant group of participants reached out to expand their networks and mobilize support in the context of experiencing mental health and adherence challenges, speaking to the importance of social support as a coping strategy during times of stress. Our findings call for holistic approaches to HIV care that consider the broader political, economic, and social contexts that shape its effectiveness.

Associations between Circumstances Surrounding Overdose and Underlying Classes of Polysubstance Overdose Deaths.

BACKGROUND: The overdose crisis is worsening, with polysubstance overdose deaths involving psychostimulants increasing in the U.S. Substance-specific prevention and intervention activities may not be as effective for polysubstance use, so we sought to classify substances used among overdose decedents to identify unique factors related to these classes. METHODS: We used data from the Nevada State Unintentional Drug Overdose Reporting System, Jan 2019-Jun 2021, which comes from death certificates, coroner/medical examiner reports, and postmortem toxicology. Latent class analysis, multinomial logistic regression, and Chi-squared tests determined underlying drug use classes, differences in characteristics and circumstances surrounding overdose, and assessed relationships between circumstances and drug use classes. RESULTS: We identified four latent classes: (1) prescription drugs (19.1%), (2) predominately methamphetamine (31.4%), (3) multi-drug (28.9%), and (4) opioid and stimulant (20.6%). Compared to other classes, the prescription drug class had a higher percentage of female decedents, from rural counties, with mental health diagnoses, who died at home. The predominately methamphetamine class had a higher percentage of decedents experiencing homelessness. The multi-drug use class had higher percentage of younger and Hispanic decedents. Those in the opioid and stimulant class had higher odds of being recently released from an institutional setting, compared to the multi drug class. CONCLUSIONS: These underlying classes were associated with several characteristics and circumstances that can prove useful for prevention, treatment, and harm reduction agencies when designing programs and interventions to target specific groups of people at-risk for drug overdose.

The group-based law enforcement mistrust scale: psychometric properties of an adapted scale and implications for public health and harm reduction research.

BACKGROUND: Negative encounters with law enforcement-direct and vicarious-fuel mistrust. When considered as part of the 'risk environment' in public health and harm reduction research, law enforcement mistrust may have broad implications. For example, fearing arrest may prevent someone from calling 911 when witnessing an overdose or lead to syringe-sharing and community spread of HIV. For people in the US who identify as Black or African American, these effects may compound, given the ways in which communities of color have been overpoliced. The purpose of this study is to investigate the psychometrics of an adapted scale of law enforcement mistrust-the Group-Based Law Enforcement Mistrust Scale (GBLEMS)-and evaluate its associations with racial and ethnic identity and experiences with law enforcement. METHODS: This cross-sectional survey took place in a small city in the Western United States where only 3% of the population is Black or African American. The sample included Black or African American and Hispanic and Latina women at risk of HIV, and members of their social networks, yielding a diverse sample across racial, ethnic, and gender identities (N = 219). The GBLEMS is a 12-item scale adapted from the Group-Based Medical Mistrust Scale (GBMMS; Thompson et al. 2004). The current analysis evaluated the psychometric properties of the GBLEMS (reliability, exploratory factor analysis) and its associations with demographics, other race-based constructs, and experiences with law enforcement. RESULTS: The GBLEMS demonstrated strong reliability (Cronbach's alpha = 0.92) and exploratory factor analysis indicated that items loaded onto two factors-mistrust and disparities in treatment. There was also support for the scale's construct validity. As hypothesized, GBLEMS scores were higher among respondents who identify as Black or African American, and among those who reported other experiences of racial discrimination, medical mistrust, and negative encounters with law enforcement. CONCLUSIONS: This study yielded support for the reliability and validity of the GBLEMS as a multi-item, two-factor scale measuring group-based law enforcement mistrust. When framing public health and harm reduction research in terms of the risk environment, law enforcement mistrust may be important to measure as part of a comprehensive approach that addresses persistent racial disparities.

Patterns of and Rationale for the Co-use of Methamphetamine and Opioids: Findings From Qualitative Interviews in New Mexico and Nevada.

Introduction: Methamphetamine use and methamphetamine-involved deaths have increased dramatically since 2015, and opioid-related deaths now frequently involve methamphetamine. Nevada and New Mexico are states with elevated rates of opioid and methamphetamine use. In this paper, we report results from a qualitative analysis that examined patterns of methamphetamine and opioid co-use over participants' lifespan, factors that influence those patterns, and implications for health outcomes among users. Methods: Project AMPED was a multisite, mixed-methods study of methamphetamine use in Northern New Mexico and Northern Nevada. Between December 2019 and May 2020, qualitative interview participants were asked to describe their patterns of and reasons for co-administration of opioids and methamphetamine. Results: We interviewed 21 people who reported using methamphetamine in the past 3 months. Four primary patterns of methamphetamine and opioid co-use were identified: [1] using both methamphetamine and heroin, either simultaneously or sequentially (n = 12), [2] using methamphetamine along with methadone (n = 4), [3] using prescription opioids and methamphetamine (n = 1), and [4] using only methamphetamine (n = 4). Among those who used methamphetamine and heroin simultaneously or sequentially, motivations drew from a desire to enhance the effect of one drug or another, to feel the "up and down" of the "perfect ratio" of a goofball, or to mitigate unwanted effects of one or the other. Among those who used methamphetamine and methadone, motivations focused on alleviating the sedative effects of methadone. Conclusion: To address the emergent trend of increasing methamphetamine-related deaths, researchers, health care professionals, and community health workers must acknowledge the decision-making processes behind co-use of opioids and methamphetamine, including the perceived benefits and harms of co-use. There is an urgent need to address underlying issues associated with drug use-related harms, and to design interventions and models of treatment that holistically address participants' concerns.

Who Can I Ask? Who Would I Tell? An Egocentric Network Analysis Among a Sample of Women At-Risk to Explore Anticipated Advice Seeking and Disclosure Around Pre-exposure Prophylaxis (PrEP).

Pre-Exposure Prophylaxis (PrEP) health campaigns invite women to talk with their provider, partner, and peers about PrEP, though they do not offer specific guidance about who and how to engage. This study uses egocentric network methods in a sample of women at risk for HIV to understand what characteristics of women (egos), their networks, and network members (alters) were associated with anticipated PrEP advice-seeking and anticipated PrEP disclosure. Multivariable generalized linear mixed models revealed that women often consider close, supportive, and trusted network members as PrEP discussants while ego-level, network-level, and cross-level interactions depict the complexity of anticipated network activation. Findings highlight the importance of considering women at risk for HIV in a broader social context. Anticipated advice-seeking and disclosure related to PrEP were associated but distinct forms of network activation, which highlights the need to develop specific recommendations about who and how women should engage with their networks around PrEP.

"It's called overamping": experiences of overdose among people who use methamphetamine.

BACKGROUND: The USA is experiencing increases in methamphetamine use and methamphetamine-related or attributed deaths. In the current study, we explore qualitative narratives of methamphetamine overdose and strategies used by people who use drugs to reduce the undesirable effects associated with methamphetamine use. METHODS: We conducted 21 qualitative interviews with people over the age of 18 who reported using methamphetamine in the previous 3 months in Nevada and New Mexico. Interviews were recorded, transcribed, and analyzed using qualitative thematic analysis. RESULTS: Respondents described a constellation of psychological and physical symptoms that they characterized as "overamping," experienced on a continuum from less to more severe. Reports of acute, fatal methamphetamine overdose were rare. Few reported seeking medical attention for undesirable effects (usually related to psychological effects). General self-care strategies such as sleeping and staying hydrated were discussed. CONCLUSIONS: When asked directly, our respondents claimed that acute, fatal methamphetamine overdose is rare or even impossible. However, they described a number of undesirable symptoms associated with overconsumption of methamphetamine and had few clinical or harm reduction strategies at their disposal. Addressing this current wave of drug-related deaths will require attention to the multiple factors that structure experiences of methamphetamine "overdose," and a collaborative effort with PWUDs to devise effective harm reduction and treatment strategies.

Identification of Non-Fatal Opioid Overdose Cases Using 9-1-1 Computer Assisted Dispatch and Prehospital Patient Clinical Record Variables.

Background: The current epidemic of opioid overdoses in the United States necessitates a robust public health and clinical response. We described patterns of non-fatal opioid overdoses (NFOODs) in a small western region using data from the 9-1-1 Computer Assisted Dispatch (CAD) record and electronic Patient Clinical Records (ePCR) completed by EMS responders. We determined whether CAD and ePCR variables could identify NFOOD cases in 9-1-1 data for intervention and surveillance efforts. Methods: We conducted a retrospective analysis of 1 year of 9-1-1 emergency medical CAD and ePCR (including naloxone administration) data from the sole EMS provider in the response area. Cases were identified based on clinician review of the ePCR, and categorized as definitive NFOOD, probable NFOOD, or non-OOD. Sensitivity, specificity, positive and negative predictive values (PPV and NPV) of the most prevalent CAD and ePCR variables were calculated. We used a machine learning technique-Random-Forests (RF) modeling-to optimize our ability to accurately predict NFOOD cases within census blocks. Results: Of 37,960 9-1-1 calls, clinical review identified 158 NFOOD cases (0.4%), of which 123 (77.8%) were definitive and 35 (22.2%) were probable cases. Overall, 106 (67.1%) received naloxone from the EMS responder at the scene. As a predictor of NFOOD, naloxone administration by paramedics had 67.1% sensitivity, 99.6% specificity, 44% PPV, and 99.9% NPV. Using CAD variables alone achieved a sensitivity of 36.7% and specificity of 99.7%. Combining ePCR variables with CAD variables increased the diagnostic accuracy with the best RF model yielding 75.9% sensitivity, 99.9% specificity, 71.4% PPV, and 99.9% NPV. Conclusion: CAD problem type variables and naloxone administration, used alone or in combination, had sub-optimal predictive accuracy. However, a Random Forests modeling approach improved accuracy of identification, which could foster improved surveillance and intervention efforts. We identified the set of NFOODs that EMS encountered in a year and may be useful for future surveillance efforts.

Association of social network characteristics with HIV knowledge, stigma, and testing: findings from a study of racial and ethnic minority women in a small Western city.

Black and Latina women are disproportionately impacted by HIV/AIDS. Despite existing research linking social networks and HIV risk among men who have sex with men (MSM) and other high-risk populations, little research has examined how ethnic/racial minority women's social networks shape HIV prevention and intervention targets. Using interviews with a sample of 165 predominantly Black and Latina-identifying women from a small city in the Western U.S., this research examines the relationship between egocentric network characteristics and HIV knowledge, attitudes, and testing history. Results reveal that network characteristics play a significant role in shaping HIV-related knowledge, prejudice, and testing intention but not HIV testing history. Individual-level factors like homelessness and perceptions of testing barriers are more salient for explaining testing behaviors than network characteristics. Intervention efforts to improve knowledge and reduce prejudice among Black and Latina women may benefit from mobilizing network ties.

Individual and social network correlates of responding to multiple overdoses among a cohort of people who use drugs.

Background: The purpose of this study was to identify characteristics of people who respond to two or more overdoses (i.e., multiple overdose responders; MOR) compared to those who respond to zero or one, and the association between MOR status and changes in network size. Methods: Secondary analysis of data from a randomized trial among 199 PWUD in Baltimore, MD (2016-2019). We used cross-tabulation, 𝜒 2 , and ANOVA models to identify cross-sectional associations between overdose response and demographic, drug use, and network size; and ANCOVA models to examine the relationship between baseline MOR status and change in network size. Results: From the cohort of 199, 185 people provided data on overdose response at baseline; 197 provided data at 6-month follow-up. At baseline, 27.6% of participants were classified as MORs (ever). Correlates of MOR status included homelessness; age; injecting drug use; quality of interactions with police (respectful vs. not); and use of powder cocaine, prescription opioids, and heroin. MORs had larger networks and their network size decreased more over time, but the association was not statistically significant. At follow-up, 16% were classified as MORs (past 6 months); correlates of follow-up MOR status were similar to those at baseline. Conclusions: Overdose prevention interventions rely on PWUD to respond to overdoses. Identifying factors associated with MOR status could increase intervention efficiency and providing MORs with support could increase sustainability. Our findings suggest that PWUD experiencing homelessness, using cocaine and heroin, and demonstrating increased salience of overdose in their lives would benefit from targeted programs.

The mobile emergency recovery intervention trial (MERIT): Protocol for a 3-year mixed methods observational study of mobile recovery outreach teams in Nevada's emergency departments.

BACKGROUND: The Substance Abuse and Mental Health Administration awarded State Targeted Response grants to support states' efforts to address the opioid epidemic. In Nevada, one component of this grant was mobile recovery outreach teams (MROTs) that utilized peer recovery support specialists to provide care for qualifying patients in emergency departments (EDs). The Mobile Emergency Recovery Intervention Trial (MERIT) is a mixed methods study to assess the feasibility/acceptability and effectiveness of the MROT intervention. This protocol mainly describes the R33 research activities and outcomes. The full protocol can be found protocols.io. METHODS: Data will be derived from state-level data sets containing de-identified emergency department visits, substance use disorder treatment records, and mortality files; in-person mixed methods interviews; participant observation; and self-report process evaluation forms. Primary outcomes include Medication Assisted Treatment (MAT) initiation and non-fatal overdose; secondary outcomes include MAT retention and fatal overdose. Quantitative hypotheses will be tested using generalized linear mixed effects models, Bayesian hierarchical models, and marginal Cox models. Qualitative interview data will be analyzed using an inductive thematic analysis procedure. DISCUSSION: It is impossible to conduct a randomized controlled trial of the effectiveness of the MROTs, given the ethical and logistical considerations of this intervention.This study's innovative design employs a mixed methods formative phase to examine feasibility and acceptability, and a quasi-experimental outcomes evaluation phase employing advanced statistical methods to mitigate bias and suggest causal inference regarding the effectiveness of the MROTs.Innovative interventions have been deployed in many states; evidence regarding their effectiveness is lacking, but critical to informing an effective public health response to the opioid epidemic.