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Background: Treatment for opioid use disorder (OUD), particularly medication for OUD, is highly effective; however, retention in OUD treatment is a significant challenge. We aimed to identify key risk factors for premature exit from OUD treatment., Methods: We analyzed 2,381,902 cross-sectional treatment episodes for individuals in the U.S., discharged between Jan/1/2015 and Dec/31/2019. We developed classification models (Random Forest, Classification and Regression Trees (CART), Bagged CART, and Boosted CART), and analyzed 31 potential risk factors for premature treatment exit, including treatment characteristics, substance use history, socioeconomic status, and demographic characteristics. We stratified our analysis based on length of stay in treatment and service setting. Models were compared using cross-validation and the receiver operating characteristic area under the curve (ROC-AUC)., Results: Random Forest outperformed other methods (ROC-AUC: 74%). The most influential risk factors included characteristics of service setting, geographic region, primary source of payment, and referral source. Race, ethnicity, and sex had far weaker predictive impacts. When stratified by treatment setting and length of stay, employment status and delay (days waited) to enter treatment were among the most influential factors. Their importance increased as treatment duration decreased. Notably, importance of referral source increased as the treatment duration increased. Finally, age and age of first use were important factors for lengths of stay of 2-7 days and in detox treatment settings., Conclusions: The key factors of OUD treatment attrition identified in this analysis should be more closely explored (e.g., in causal studies) to inform targeted policies and interventions to improve models of care., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)

Background: Reports analyzing drug overdose (OD) mortality data during the COVID-19 pandemic are limited. Outcomes across states are heterogenous, necessitating assessments of associations between COVID-19 and OD deaths on a state-by-state level. This report aims to analyze trends in OD deaths in Massachusetts during COVID-19., Methods: Analyzing 3,924 death records, we characterize opioid-, cocaine-, and amphetamine-involved OD mortality and substance co-presence trends from March 24-November 8 in 2020 as compared to 2018 and 2019., Results: OD deaths involving amphetamines increased by 85% from 2019 to 2020 (61 vs. 113; P<0.001) but were steady from 2018 to 2019. Heroin's presence continued to decrease (341 in 2018, 247 in 2019, 157 in 2020; P<0.001); however, fentanyl was present in more than 85% of all OD deaths across all periods. Among OD deaths, alcohol involvement consistently increased, present in 250 deaths in 2018, 299 in 2019 (P=0.02), and 350 in 2020 (P=0.04). In 2019, 78% of OD decedents were White and 7% were Black, versus 73% and 10% in 2020 (P=0.02)., Conclusion: Increased deaths involving stimulants, alcohol, and fentanyl reflect concerning trends in the era of COVID-19. Rising OD death rates among Black residents underscore that interventions focused on racial equity are necessary., Competing Interests: Declarations of Interest The authors declare no competing interests., (Copyright © 2021 Elsevier B.V. All rights reserved.)

This article is concerned with the processes of doing research with people who use drugs, as someone who has a history of using drugs. It offers a brief introductory review to autoethnographic research methods and how they might be used to enhance the practice of drugs research. Through illustrative examples from the author's own experiences of researching heroin use, the article cautiously makes the case for an increased focus upon our drug-using experiences in drugs research. The positive and negative implications of this for research methods in drug studies are discussed, as well as their potential intersections with drug policy debates., Competing Interests: Declarations of Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Background: Cigarette smoking may increase the risk of COVID-19 complications, reinforcing the urgency of smoking cessation in populations with high smoking prevalence such as individuals with opioid use disorder (OUD). Whether the COVID-19 pandemic has altered perceptions, motivation to quit, or tobacco use among cigarette smokers and nicotine e-cigarette vapers with OUD is unknown., Methods: A telephone survey was conducted in March-July 2020 of current cigarette smokers or nicotine vapers with OUD who were stable on buprenorphine treatment at five Boston (MA) area community health centers. The survey assessed respondents' perceived risk of COVID-19 due to smoking or vaping, interest in quitting, quit attempts and change in tobacco consumption during the pandemic., Results: 222/520 patients (43 %) completed the survey, and 145 were asked questions related to COVID-19. Of these, 61 % smoked cigarettes only, 13 % vaped nicotine only, and 26 % were dual users. Nearly 80 % of participants believed that smoking and vaping increased their risk of COVID-19 infection or complications. Smokers with this belief reported an increased interest in quitting (AOR 4.6, 95 % CI:1.7-12.4). Overall, 49 % of smokers and 42 % of vapers reported increased interest in quitting due to the pandemic; 24 % and 20 %, respectively, reported attempting to quit since the pandemic. However, 35 % of smokers and 27 % of vapers reported increasing smoking and vaping, respectively, during the pandemic., Conclusions: Most patients with OUD believed that smoking and vaping increased their vulnerability to COVID-19, half reported increased interest in quitting, but others reported increasing smoking and vaping during the COVID-19 pandemic., (Copyright © 2020 Elsevier B.V. All rights reserved.)

Opioid use disorder (OUD) is an increasing public health problem. Transplant centers worldwide are being confronted with increasing numbers of patients with opioid use disorder and end stage organ disease. Opioid agonist therapy (OAT; ie, methadone, buprenorphine, and buprenorphine/naloxone) is a scientifically proven, effective, physician-prescribed treatment for OUD. Although data in transplant populations remain limited, studies suggest that OAT does not appear to negatively affect graft or patient survival. Policies that require discontinuation of OAT for purposes of listing or transplantation contradict the evidence base for efficacy of OAT. Additional prospective outcomes studies on OAT and transplantation are needed. In the meantime, centers should not be asking patients to come off these effective treatments., (© 2018 The American Society of Transplantation and the American Society of Transplant Surgeons.)