Pub Date : 2026-02-01Epub Date: 2026-01-12DOI: 10.1016/j.drugalcdep.2026.113043
Rachel L. Gunn , Alexander W. Sokolovsky , Lindy K. Howe , Nancy P. Barnett , Kristina M. Jackson , Sharon Lipperman-Kreda , Robert Miranda Jr. , Timothy Trull , Jane Metrik
Background
Alcohol and cannabis are commonly used substances for young adults, and person-level co-use (i.e., concurrent or simultaneous use of both) is associated with increased likelihood of experiencing positive and negative alcohol-related consequences. However, findings regarding within-person effects (i.e.,day-level) co-use on consequences are mixed, possibly due to inconsistency in including alcohol quantity (i.e., total number of standard drinks consumed) when examining the association between co-use and consequences. In the present study, we examined whether the number of drinks mediates the association between co-use and positive or negative alcohol consequences at the day level.
Methods
Data from morning reports in a 28-day field-based study of young adults reporting frequent past 60-day alcohol and cannabis use (N = 115) were used to test multilevel mediation models.
Results
We found significant mediation for both positive and negative alcohol consequences; consuming more alcoholic drinks on co-use days, relative to alcohol-only days, was associated with a higher likelihood of experiencing negative consequences and a lower likelihood of positive consequences. These results suggest that daily number of drinks is a significant driver of the relationship between co-use and alcohol-related consequences at the day-level.
Conclusions
In the context of increased cannabis use among young adults, this finding provides critical information for prevention and intervention efforts aimed at reducing the alcohol-related consequences associated with co-use days. Overall, reducing total alcohol consumption remains a prominent harm-reduction strategy among this population.
{"title":"Alcohol quantity mediates the association between daily alcohol and cannabis co-use and alcohol consequences","authors":"Rachel L. Gunn , Alexander W. Sokolovsky , Lindy K. Howe , Nancy P. Barnett , Kristina M. Jackson , Sharon Lipperman-Kreda , Robert Miranda Jr. , Timothy Trull , Jane Metrik","doi":"10.1016/j.drugalcdep.2026.113043","DOIUrl":"10.1016/j.drugalcdep.2026.113043","url":null,"abstract":"<div><h3>Background</h3><div>Alcohol and cannabis are commonly used substances for young adults, and person-level co-use (i.e., concurrent or simultaneous use of both) is associated with increased likelihood of experiencing positive and negative alcohol-related consequences. However, findings regarding within-person effects (i.e.,day-level) co-use on consequences are mixed, possibly due to inconsistency in including alcohol quantity (i.e., total number of standard drinks consumed) when examining the association between co-use and consequences. In the present study, we examined whether the number of drinks mediates the association between co-use and positive or negative alcohol consequences at the day level.</div></div><div><h3>Methods</h3><div>Data from morning reports in a 28-day field-based study of young adults reporting frequent past 60-day alcohol and cannabis use (N = 115) were used to test multilevel mediation models.</div></div><div><h3>Results</h3><div>We found significant mediation for both positive and negative alcohol consequences; consuming more alcoholic drinks on co-use days, relative to alcohol-only days, was associated with a higher likelihood of experiencing negative consequences and a lower likelihood of positive consequences. These results suggest that daily number of drinks is a significant driver of the relationship between co-use and alcohol-related consequences at the day-level.</div></div><div><h3>Conclusions</h3><div>In the context of increased cannabis use among young adults, this finding provides critical information for prevention and intervention efforts aimed at reducing the alcohol-related consequences associated with co-use days. Overall, reducing total alcohol consumption remains a prominent harm-reduction strategy among this population.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113043"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-13DOI: 10.1016/j.drugalcdep.2026.113045
George Pro , Jonathan Cantor , Mofan Gu , Kari Weber , Brooke Montgomery
Background
Private acquisition of public and nonprofit healthcare facilities is increasing throughout the United States (US). While privatization can be beneficial, growing evidence has demonstrated higher costs, larger patient volumes, and worsening outcomes. These trends are also apparent in substance use disorder (SUD) treatment facilities at a time when overdose and treatment demand are at an all time high. This study was designed to measure whether increases in private acquisitions of nonprofit substance use treatment facilities are happening faster in underrepresented and underresourced communities.
Methods
We used the Mental health and Addiction Treatment Tracking Repository (MATTR) to identify SUD treatment facilities that were nonprofit/public owned in 2019 (N = 2826 facilities). Our outcome was whether a facility became privatized and owned by a for-profit company by 2024. We linked MATTR to demographic census data and modeled privatization using a generalized estimating equation with a modified Poisson distribution, log link function, and robust standard errors.
Results
Twenty percent (n = 572) of public/nonprofit SUD treatment facilities were privatized between 2019 and 2024. Privatization of nonprofit/public facilities was more common in communities with lower household incomes (p < 0.01).
Conclusion
Private acquisition of nonprofit/public SUD treatment facilities increased between 2019 and 2024. Acquisitions were disproportionately located in communities with higher rates of low-income households. Private acquisition can be beneficial for some facilities, but a growing evidence base is demonstrating how privatization is generally followed by worsening health outcomes in the process of restructuring and reselling at a profit. Treatment systems must not be extractive. Oversight and community involvement may help ensure mutual beneficence.
{"title":"Rising and disparate trends in the private/for-profit acquisition of nonprofit substance use treatment facilities, US, 2019–2024","authors":"George Pro , Jonathan Cantor , Mofan Gu , Kari Weber , Brooke Montgomery","doi":"10.1016/j.drugalcdep.2026.113045","DOIUrl":"10.1016/j.drugalcdep.2026.113045","url":null,"abstract":"<div><h3>Background</h3><div>Private acquisition of public and nonprofit healthcare facilities is increasing throughout the United States (US). While privatization can be beneficial, growing evidence has demonstrated higher costs, larger patient volumes, and worsening outcomes. These trends are also apparent in substance use disorder (SUD) treatment facilities at a time when overdose and treatment demand are at an all time high. This study was designed to measure whether increases in private acquisitions of nonprofit substance use treatment facilities are happening faster in underrepresented and underresourced communities.</div></div><div><h3>Methods</h3><div>We used the Mental health and Addiction Treatment Tracking Repository (MATTR) to identify SUD treatment facilities that were nonprofit/public owned in 2019 (N = 2826 facilities). Our outcome was whether a facility became privatized and owned by a for-profit company by 2024. We linked MATTR to demographic census data and modeled privatization using a generalized estimating equation with a modified Poisson distribution, log link function, and robust standard errors.</div></div><div><h3>Results</h3><div>Twenty percent (n = 572) of public/nonprofit SUD treatment facilities were privatized between 2019 and 2024. Privatization of nonprofit/public facilities was more common in communities with lower household incomes (p < 0.01).</div></div><div><h3>Conclusion</h3><div>Private acquisition of nonprofit/public SUD treatment facilities increased between 2019 and 2024. Acquisitions were disproportionately located in communities with higher rates of low-income households. Private acquisition can be beneficial for some facilities, but a growing evidence base is demonstrating how privatization is generally followed by worsening health outcomes in the process of restructuring and reselling at a profit. Treatment systems must not be extractive. Oversight and community involvement may help ensure mutual beneficence.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113045"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-13DOI: 10.1016/j.drugalcdep.2026.113042
Cecilia Nunez , Benedicta Anighoro , Jin H. Yoon , Margaret C. Wardle
Background
People who use cocaine are at increased risk of overdose related to fentanyl in the cocaine supply, yet few interventions address fentanyl risks among this population. Demand tasks use hypothetical decisions about drug purchases to quantify likely real-world behavior. Our cocaine demand task, the Adulterated Cocaine Purchasing Task, contrasts planned purchases of cocaine when there is 0 % probability (no chance) the cocaine is mixed with fentanyl vs. 10 % probability (in 10 chance) the cocaine is mixed with fentanyl.
Methods
Using a between-subjects design, participants who reported purchasing cocaine in the past year (N = 58) were randomly assigned to complete test measures either following (intervention group; n = 30) or before receiving (control group; n = 28) fentanyl education. Test measures consisted of the Adulterated Cocaine Purchasing Task, self-reported fentanyl knowledge, and harm reduction strategies. Demographics and substance use history were also assessed.
Results
Findings suggested providing brief fentanyl education significantly increased fentanyl knowledge. Results also indicated higher probability (1 in 10 chance) of fentanyl admixture was consistently related to decreased cocaine demand across multiple demand indices (e.g., reducing their consumption when cocaine is free). However, providing brief education did not lead to reduced demand for cocaine mixed with fentanyl relative to those in the control group. Results also showed fentanyl education did not affect endorsement of harm reduction behaviors.
Conclusion
Our findings further suggest the urgent need to prioritize strategies aside from education to address overdose risk among people who use cocaine.
{"title":"Impact of a brief fentanyl educational intervention on demand for cocaine mixed with fentanyl","authors":"Cecilia Nunez , Benedicta Anighoro , Jin H. Yoon , Margaret C. Wardle","doi":"10.1016/j.drugalcdep.2026.113042","DOIUrl":"10.1016/j.drugalcdep.2026.113042","url":null,"abstract":"<div><h3>Background</h3><div>People who use cocaine are at increased risk of overdose related to fentanyl in the cocaine supply, yet few interventions address fentanyl risks among this population. Demand tasks use hypothetical decisions about drug purchases to quantify likely real-world behavior. Our cocaine demand task, the Adulterated Cocaine Purchasing Task, contrasts planned purchases of cocaine when there is 0 % probability (no chance) the cocaine is mixed with fentanyl vs. 10 % probability (in 10 chance) the cocaine is mixed with fentanyl.</div></div><div><h3>Methods</h3><div>Using a between-subjects design, participants who reported purchasing cocaine in the past year (N = 58) were randomly assigned to complete test measures either following (intervention group; n = 30) or before receiving (control group; n = 28) fentanyl education. Test measures consisted of the Adulterated Cocaine Purchasing Task, self-reported fentanyl knowledge, and harm reduction strategies. Demographics and substance use history were also assessed.</div></div><div><h3>Results</h3><div>Findings suggested providing brief fentanyl education significantly increased fentanyl knowledge. Results also indicated higher probability (1 in 10 chance) of fentanyl admixture was consistently related to decreased cocaine demand across multiple demand indices (e.g., reducing their consumption when cocaine is free). However, providing brief education did not lead to reduced demand for cocaine mixed with fentanyl relative to those in the control group. Results also showed fentanyl education did not affect endorsement of harm reduction behaviors.</div></div><div><h3>Conclusion</h3><div>Our findings further suggest the urgent need to prioritize strategies aside from education to address overdose risk among people who use cocaine.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113042"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146004878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-03DOI: 10.1016/j.drugalcdep.2026.113021
Mubashir Farooq , Asif Ali Banka
Purpose
The rising misuse of opioids, overdose deaths, and opioid use disorder (OUD) associated with chronic pain treatment present a significant public health challenge, continuing to fuel the opioid epidemic. Since opioid-related aberrant behaviours (ORABs) are early indicators of potential misuse, it is crucial to develop advanced predictive models for safe opioid management.
Methods
This study introduces an explainable machine learning framework to predict confirmed aberrant behaviours by integrating clinical text with structured data from the Opioid-Related Aberrant Behavior Detection Dataset (ODD). A multimodal, clinically applicable, and explainable predictive model is developed in this study. The study used GloVe (Global Vectors for Word Representation) embeddings and ClinicalBERT contextual embeddings for EHR text, applied Synthetic Minority Oversampling Technique (SMOTE) for data balancing, and trained various machine learning algorithms.
Results
The performance of models was assessed using multiple evaluation metrics. Additionally, SHAP (Shapley Additive exPlanations) was employed to address explainability concerns and to assess feature importance via an ablation study. Results demonstrated that Opioid Risk Ensemble achieved an AUROC of 96.0 % and an accuracy of 98.8 %, indicating that opioids, benzodiazepine prescriptions, and factors related to the central nervous system are significant predictors, as confirmed by SHAP analysis. Furthermore, the Opioid Risk Neural Network, applied with ClinicalBERT embeddings, achieved an AUROC of 98.75 % and an accuracy of 98.47 % on the held-out test set, with SHAP interpretation providing insights into the most influential clinical note terms.
Conclusion
The multimodal, explainable AI approach will be valuable for modern healthcare decision-making, supporting risk prediction for ORABs.
目的:与慢性疼痛治疗相关的阿片类药物滥用、过量死亡和阿片类药物使用障碍(OUD)的增加是一项重大的公共卫生挑战,继续助长阿片类药物的流行。由于阿片类药物相关异常行为(ORABs)是潜在滥用的早期指标,因此开发先进的阿片类药物安全管理预测模型至关重要。方法:本研究引入了一个可解释的机器学习框架,通过整合临床文本和阿片类药物相关异常行为检测数据集(ODD)的结构化数据来预测已确认的异常行为。本研究建立了一个多模态、临床适用且可解释的预测模型。该研究使用GloVe (Global Vectors for Word Representation)嵌入和ClinicalBERT上下文嵌入用于EHR文本,应用合成少数派过采样技术(SMOTE)进行数据平衡,并训练了各种机器学习算法。结果:采用多种评价指标对模型的性能进行评价。此外,采用Shapley加性解释(Shapley Additive explanation)来解决可解释性问题,并通过消融研究评估特征的重要性。结果表明,阿片类药物风险集合的AUROC为96.0%,准确率为98.8%,表明阿片类药物、苯二氮卓类药物处方和与中枢神经系统相关的因素是重要的预测因子,SHAP分析证实了这一点。此外,应用ClinicalBERT嵌入的阿片类风险神经网络在hold out测试集中实现了98.75%的AUROC和98.47%的准确率,SHAP解释提供了对最具影响力的临床笔记术语的见解。结论:多模式、可解释的人工智能方法将为现代医疗保健决策提供价值,支持orab的风险预测。
{"title":"Explainable machine learning for predicting opioid-related aberrant behavior: A multimodal approach using clinical text and structured data","authors":"Mubashir Farooq , Asif Ali Banka","doi":"10.1016/j.drugalcdep.2026.113021","DOIUrl":"10.1016/j.drugalcdep.2026.113021","url":null,"abstract":"<div><h3>Purpose</h3><div>The rising misuse of opioids, overdose deaths, and opioid use disorder (OUD) associated with chronic pain treatment present a significant public health challenge, continuing to fuel the opioid epidemic. Since opioid-related aberrant behaviours (ORABs) are early indicators of potential misuse, it is crucial to develop advanced predictive models for safe opioid management.</div></div><div><h3>Methods</h3><div>This study introduces an explainable machine learning framework to predict confirmed aberrant behaviours by integrating clinical text with structured data from the Opioid-Related Aberrant Behavior Detection Dataset (ODD). A multimodal, clinically applicable, and explainable predictive model is developed in this study. The study used GloVe (Global Vectors for Word Representation) embeddings and ClinicalBERT contextual embeddings for EHR text, applied Synthetic Minority Oversampling Technique (SMOTE) for data balancing, and trained various machine learning algorithms.</div></div><div><h3>Results</h3><div>The performance of models was assessed using multiple evaluation metrics. Additionally, SHAP (Shapley Additive exPlanations) was employed to address explainability concerns and to assess feature importance via an ablation study. Results demonstrated that Opioid Risk Ensemble achieved an AUROC of 96.0 % and an accuracy of 98.8 %, indicating that opioids, benzodiazepine prescriptions, and factors related to the central nervous system are significant predictors, as confirmed by SHAP analysis. Furthermore, the Opioid Risk Neural Network, applied with ClinicalBERT embeddings, achieved an AUROC of 98.75 % and an accuracy of 98.47 % on the held-out test set, with SHAP interpretation providing insights into the most influential clinical note terms.</div></div><div><h3>Conclusion</h3><div>The multimodal, explainable AI approach will be valuable for modern healthcare decision-making, supporting risk prediction for ORABs.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113021"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146013862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-16DOI: 10.1016/j.drugalcdep.2026.113051
Elias M. Klemperer , Xianghua Luo , Qing Cao , Dana M. Carroll , F. Joseph McClernon , Neal L. Benowitz , Andrew A. Strasser , Jennifer W. Tidey , Eric C. Donny , Dorothy K. Hatsukami
Introduction
The US FDA has proposed a nicotine-reducing standard for cigarettes. A recent trial found that, with access to alternative nicotine delivery systems (ANDS; i.e., e-cigarettes, nicotine medicines), participants randomized to very low nicotine content (VLNC) vs normal nicotine content (NNC) cigarettes achieved greater smoking reduction. This secondary analysis compared effects of the VLNC+ANDS-access versus NNC+ANDS-access conditions on post-intervention cigarette smoking.
Methodology
Adults who smoke were randomized to 12 weeks of an experimental marketplace with VLNC (0.4 mg nicotine/gram tobacco) vs NNC (15.8 mg/g) cigarettes. All participants had access to non-combusted ANDS. Multivariable regressions were used to examine effects of VLNC vs NNC condition and co-use of ANDS with cigarettes on smoking and cessation-related outcomes during follow-up, when no study products were provided (weeks 12–16).
Results
Among those who completed follow-up (n = 336), VLNC vs NNC participants achieved more 7-day point-prevalence smoking abstinence (VLNC=19.6 % vs NNC=11.0 %; p = 0.031), had more smokefree days (VLNC mean=9.7 vs NNC mean=4.9; p = 0.043), and smoked fewer cigarettes/day (VLNC mean=7.3 vs NNC mean=10.7; p < 0.001). Among participants smoking at week-12 (n = 281), co-use of ANDS vs exclusive smoking was associated with more quit attempts (25.5 % vs 13.0 %; p = 0.005) and fewer cigarette/day (mean=9.3 vs mean=12.4; p < 0.001) during follow-up.
Conclusions
Switching to VLNC cigarettes with access to non-combusted ANDS produced sustained effects on smoking abstinence. Among those who continued smoking, co-use of ANDS was associated with fewer cigarettes/day and more attempts to quit. Findings provide further support for a nicotine-reducing standard for cigarettes in the context of a marketplace which includes ANDS.
导语:美国食品和药物管理局提出了一项减少香烟尼古丁的标准。最近的一项试验发现,通过使用替代尼古丁传递系统(即电子烟、尼古丁药物),参与者被随机分配到尼古丁含量极低(VLNC)和尼古丁含量正常(NNC)的香烟中,吸烟量减少得更多。这一次要分析比较了VLNC+ and - and -access条件与NNC+ and -access条件对干预后吸烟的影响。方法:吸烟的成年人被随机分为VLNC (0.4mg尼古丁/克烟草)和NNC (15.8mg/克烟草)香烟的实验市场,为期12周。所有参与者都能接触到未燃烧的手。在随访期间(第12-16周),当没有提供研究产品时,采用多变量回归来检查VLNC与NNC状况以及ANDS与香烟共同使用对吸烟和戒烟相关结果的影响。结果:在完成随访的参与者中(n = 336), VLNC与NNC参与者实现了更多的7天点流行戒烟(VLNC= 19.6% vs NNC= 11.0%; p = 0.031),有更多的无烟天数(VLNC平均=9.7 vs NNC平均=4.9;p = 0.043),每天吸烟更少(VLNC平均=7.3 vs NNC平均=10.7;p结论:切换到可获得非燃烧源的VLNC香烟对戒烟产生了持续的影响。在那些继续吸烟的人中,共同使用ANDS与每天吸烟的减少和更多的戒烟尝试有关。研究结果进一步支持在包括ANDS在内的市场背景下制定减少香烟尼古丁的标准。
{"title":"Sustained effects of reduced nicotine cigarettes and co-use of non-combusted alternative nicotine delivery systems: A one-month follow-up to a randomized clinical trial","authors":"Elias M. Klemperer , Xianghua Luo , Qing Cao , Dana M. Carroll , F. Joseph McClernon , Neal L. Benowitz , Andrew A. Strasser , Jennifer W. Tidey , Eric C. Donny , Dorothy K. Hatsukami","doi":"10.1016/j.drugalcdep.2026.113051","DOIUrl":"10.1016/j.drugalcdep.2026.113051","url":null,"abstract":"<div><h3>Introduction</h3><div>The US FDA has proposed a nicotine-reducing standard for cigarettes. A recent trial found that, with access to alternative nicotine delivery systems (ANDS; i.e., e-cigarettes, nicotine medicines), participants randomized to very low nicotine content (VLNC) vs normal nicotine content (NNC) cigarettes achieved greater smoking reduction. This secondary analysis compared effects of the VLNC+ANDS-access versus NNC+ANDS-access conditions on post-intervention cigarette smoking.</div></div><div><h3>Methodology</h3><div>Adults who smoke were randomized to 12 weeks of an experimental marketplace with VLNC (0.4<!--> <!-->mg nicotine/gram tobacco) vs NNC (15.8<!--> <!-->mg/g) cigarettes. All participants had access to non-combusted ANDS. Multivariable regressions were used to examine effects of VLNC vs NNC condition and co-use of ANDS with cigarettes on smoking and cessation-related outcomes during follow-up, when no study products were provided (weeks 12–16).</div></div><div><h3>Results</h3><div>Among those who completed follow-up (n = 336), VLNC vs NNC participants achieved more 7-day point-prevalence smoking abstinence (VLNC=19.6 % vs NNC=11.0 %; <em>p</em> = 0.031), had more smokefree days (VLNC mean=9.7 vs NNC mean=4.9; <em>p</em> = 0.043), and smoked fewer cigarettes/day (VLNC mean=7.3 vs NNC mean=10.7; <em>p</em> < 0.001). Among participants smoking at week-12 (n = 281), co-use of ANDS vs exclusive smoking was associated with more quit attempts (25.5 % vs 13.0 %; <em>p</em> = 0.005) and fewer cigarette/day (mean=9.3 vs mean=12.4; <em>p</em> < 0.001) during follow-up.</div></div><div><h3>Conclusions</h3><div>Switching to VLNC cigarettes with access to non-combusted ANDS produced sustained effects on smoking abstinence. Among those who continued smoking, co-use of ANDS was associated with fewer cigarettes/day and more attempts to quit. Findings provide further support for a nicotine-reducing standard for cigarettes in the context of a marketplace which includes ANDS.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113051"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146032097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alcohol contributes to global morbidity and mortality. This study aimed to describe the prevalence and patterns of alcohol use, its correlates with health related quality of life (HRQoL) and chronic medical conditions in the Western Province of Sri Lanka.
Methods
A cross-sectional study (2018–2020) was conducted in Western Province recruited 1800 adults (>20 years) via multi-stage stratified cluster sampling. Data collection included interviewer-administered questionnaires, physiological, anthropometric, and biochemical measurements. Alcohol consumption patterns were assessed with Alcohol Use Disorders Identification Test and CAGE tools, and HRQoL with RAND-36.
Results
A total of 1333 adults participated. Alcohol consumption at any point in their life was reported by 25.5 % of participants (95 %CI:18.9–32.1), and 21.3 % (95 %CI:16.8–25.7) had consumed alcohol in the past year. The prevalence was highest among males (56.8 %;95 %CI:46.2–67.4), those aged 40–49 (27.9 %;95 %CI:20.9–34.6), residents of Gampaha district (33.2 %;95 %CI:21.4–44.9), rural dwellers (27.9 %;95 %CI:18.3–37.6), and those earning $300–400 monthly (46.5 %;95 %CI:28.4–64.6). Daily consumption was 5.2 % (95 %CI:1.9–8.3), harmful alcohol use was 28.1 % (95 %CI:19.5–36.7), and clinical alcoholism was 26.6 % (95 %CI:19.5–33.8) among alcohol consumers. Those without clinical alcoholism had higher quality of life than those with the condition. Comorbidities among consumers included dyslipidemia (81.3 %, undiagnosed:58.5 %), hypertension (61.6 %, undiagnosed:33.9 %), diabetes (41.4 %, undiagnosed:11.3 %), and prediabetes (33.8 %).
Conclusions
One-fourth of Western Province adults reported alcohol consumption, highest among middle-aged, middle-income, and residents in Gampaha district. Cardio-metabolic diseases were high among individuals who consume alcohol, many remaining undiagnosed. Non-communicable diseases programs should focus high-risk screening, alcohol control, and preventive community initiatives.
{"title":"Alcohol consumption in the Western Province of Sri Lanka: Prevalence, patterns, and health implications","authors":"Prasad Katulanda , Sanduni Gamage , Tharindu Bandara , Akhila Imantha Nilaweera , Desha Rajni Fernando , Gaya Wijeweera Katulanda , Vithanage Pujitha Wickramasinghe , Eranga Wijewickrama","doi":"10.1016/j.drugalcdep.2026.113049","DOIUrl":"10.1016/j.drugalcdep.2026.113049","url":null,"abstract":"<div><h3>Introduction</h3><div>Alcohol contributes to global morbidity and mortality. This study aimed to describe the prevalence and patterns of alcohol use, its correlates with health related quality of life (HRQoL) and chronic medical conditions in the Western Province of Sri Lanka.</div></div><div><h3>Methods</h3><div>A cross-sectional study (2018–2020) was conducted in Western Province recruited 1800 adults (>20 years) via multi-stage stratified cluster sampling. Data collection included interviewer-administered questionnaires, physiological, anthropometric, and biochemical measurements. Alcohol consumption patterns were assessed with Alcohol Use Disorders Identification Test and CAGE tools, and HRQoL with RAND-36.</div></div><div><h3>Results</h3><div>A total of 1333 adults participated. Alcohol consumption at any point in their life was reported by 25.5 % of participants (95 %CI:18.9–32.1), and 21.3 % (95 %CI:16.8–25.7) had consumed alcohol in the past year. The prevalence was highest among males (56.8 %;95 %CI:46.2–67.4), those aged 40–49 (27.9 %;95 %CI:20.9–34.6), residents of Gampaha district (33.2 %;95 %CI:21.4–44.9), rural dwellers (27.9 %;95 %CI:18.3–37.6), and those earning $300–400 monthly (46.5 %;95 %CI:28.4–64.6). Daily consumption was 5.2 % (95 %CI:1.9–8.3), harmful alcohol use was 28.1 % (95 %CI:19.5–36.7), and clinical alcoholism was 26.6 % (95 %CI:19.5–33.8) among alcohol consumers. Those without clinical alcoholism had higher quality of life than those with the condition. Comorbidities among consumers included dyslipidemia (81.3 %, undiagnosed:58.5 %), hypertension (61.6 %, undiagnosed:33.9 %), diabetes (41.4 %, undiagnosed:11.3 %), and prediabetes (33.8 %).</div></div><div><h3>Conclusions</h3><div>One-fourth of Western Province adults reported alcohol consumption, highest among middle-aged, middle-income, and residents in Gampaha district. Cardio-metabolic diseases were high among individuals who consume alcohol, many remaining undiagnosed. Non-communicable diseases programs should focus high-risk screening, alcohol control, and preventive community initiatives.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113049"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146032136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-12DOI: 10.1016/j.drugalcdep.2026.113047
Lena Lundholm , Johan Skånberg , Sara Wallhed-Finn , Fabian Lenhard
Background
Phosphatidylethanol (PEth) is a reliable biomarker of recent hazardous alcohol use but is resource-intensive and not always feasible in routine mental health care. The Alcohol Use Disorders Identification Test (AUDIT-10) and its short form, AUDIT-C, are widely used self-report tools that may offer practical alternatives. This study examined whether AUDIT scores can serve as proxies for PEth and whether machine learning models enhance prediction.
Methods
Data were collected from 4063 psychiatric outpatients who completed both PEth testing and AUDIT assessments. Regression models evaluated associations between AUDIT scores and PEth concentrations. Receiver Operating Characteristic (ROC) analyses determined cut-offs for hazardous alcohol use (PEth ≥ 0.3 µmol/L). Logistic regression, random forest, and XGBoost models were trained using AUDIT-10/AUDIT-C scores, age, and gender.
Results
AUDIT-10 and AUDIT-C correlated strongly with PEth (pseudo-R² = 30–47 %). ROC analyses showed good discrimination for hazardous use: AUDIT-10 AUC = 0.80 (optimal cut-off ≥5) and AUDIT-C AUC = 0.83 (optimal cut-off ≥4). XGBoost models improved classification modestly, yielding AUCs of 0.90 (AUDIT-10) and 0.88 (AUDIT-C), with balanced accuracies of 79–83 %, outperforming logistic regression and random forest.
Conclusions
AUDIT-10 and AUDIT-C are effective, accessible tools for identifying hazardous alcohol use in psychiatric populations, supporting their role as practical alternatives when PEth testing is unavailable. Machine learning methods offer incremental gains, but simple cut-off scores remain clinically useful. Findings highlight the value of integrating brief alcohol screening into psychiatric care to guide timely interventions, while considering PEth’s biological variability.
{"title":"Identification of hazardous alcohol use in outpatient psychiatric care: A comparison of biomarker phosphatidylethanol (PEth) and self-report","authors":"Lena Lundholm , Johan Skånberg , Sara Wallhed-Finn , Fabian Lenhard","doi":"10.1016/j.drugalcdep.2026.113047","DOIUrl":"10.1016/j.drugalcdep.2026.113047","url":null,"abstract":"<div><h3>Background</h3><div>Phosphatidylethanol (PEth) is a reliable biomarker of recent hazardous alcohol use but is resource-intensive and not always feasible in routine mental health care. The Alcohol Use Disorders Identification Test (AUDIT-10) and its short form, AUDIT-C, are widely used self-report tools that may offer practical alternatives. This study examined whether AUDIT scores can serve as proxies for PEth and whether machine learning models enhance prediction.</div></div><div><h3>Methods</h3><div>Data were collected from 4063 psychiatric outpatients who completed both PEth testing and AUDIT assessments. Regression models evaluated associations between AUDIT scores and PEth concentrations. Receiver Operating Characteristic (ROC) analyses determined cut-offs for hazardous alcohol use (PEth ≥ 0.3 µmol/L). Logistic regression, random forest, and XGBoost models were trained using AUDIT-10/AUDIT-C scores, age, and gender.</div></div><div><h3>Results</h3><div>AUDIT-10 and AUDIT-C correlated strongly with PEth (pseudo-R² = 30–47 %). ROC analyses showed good discrimination for hazardous use: AUDIT-10 AUC = 0.80 (optimal cut-off ≥5) and AUDIT-C AUC = 0.83 (optimal cut-off ≥4). XGBoost models improved classification modestly, yielding AUCs of 0.90 (AUDIT-10) and 0.88 (AUDIT-C), with balanced accuracies of 79–83 %, outperforming logistic regression and random forest.</div></div><div><h3>Conclusions</h3><div>AUDIT-10 and AUDIT-C are effective, accessible tools for identifying hazardous alcohol use in psychiatric populations, supporting their role as practical alternatives when PEth testing is unavailable. Machine learning methods offer incremental gains, but simple cut-off scores remain clinically useful. Findings highlight the value of integrating brief alcohol screening into psychiatric care to guide timely interventions, while considering PEth’s biological variability.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113047"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2025-12-30DOI: 10.1016/j.drugalcdep.2025.113014
Daan W. Von den Hoff , Floor A.C. Berden , Annemarie Noordeloos , Thomas Knuijver , Arnt F.A. Schellekens , Joost P.H. Drenth
Background
People who use drugs (PWUD) are an important population of focus for hepatitis C virus (HCV) elimination. Case-finding and treatment of these patients in outpatient specialist care is a challenge due to population specific barriers. Screening and treatment integrated in addiction care might overcome these barriers. With this study we aim to evaluate the implementation of a decentralized PWUD-HCV care model.
Methods
We conducted a multicenter prospective observational study in Dutch addiction care centers to assess a decentralized HCV care pathway for PWUD. Implementation of HCV-care within addiction care was evaluated using the Reach-Effectiveness-Adoption-Implementation-Maintenance (RE-AIM) framework. Viral elimination, defined as the proportion of identified HCV-RNA positive PWUD achieving sustained virologic response (SVR), was the primary outcome.
Results
Reach: 870 anti-HCV tests were performed, 29 HCV-RNA positive PWUD were enrolled. Effectiveness: 23 patients initiated and completed on-site treatment, three patients were referred for treatment, two patients were lost to follow-up and one patient refused treatment. All patients tested for SVR achieved SVR, one patient was lost to follow-up before SVR test. The elimination rate was 86 % (25/29). Adoption: five out of eleven addiction care organizations (45 %) implemented decentralized HCV care within addiction care. Implementation fidelity was high.
Conclusion
This study demonstrates that successfully implemented decentralized HCV care within addiction services is feasible and highly effective, achieving an elimination rate of 86 %. However, adoption of decentralized HCV care was limited, underscoring the need for targeted strategies to enhance implementation. Our findings support expanding of decentralized HCV care models in addiction settings to meet HCV elimination targets.
{"title":"Successful hepatitis C elimination through decentralized treatment in Dutch addiction care: A RE-AIM based evaluation","authors":"Daan W. Von den Hoff , Floor A.C. Berden , Annemarie Noordeloos , Thomas Knuijver , Arnt F.A. Schellekens , Joost P.H. Drenth","doi":"10.1016/j.drugalcdep.2025.113014","DOIUrl":"10.1016/j.drugalcdep.2025.113014","url":null,"abstract":"<div><h3>Background</h3><div>People who use drugs (PWUD) are an important population of focus for hepatitis C virus (HCV) elimination. Case-finding and treatment of these patients in outpatient specialist care is a challenge due to population specific barriers. Screening and treatment integrated in addiction care might overcome these barriers. With this study we aim to evaluate the implementation of a decentralized PWUD-HCV care model.</div></div><div><h3>Methods</h3><div>We conducted a multicenter prospective observational study in Dutch addiction care centers to assess a decentralized HCV care pathway for PWUD. Implementation of HCV-care within addiction care was evaluated using the Reach-Effectiveness-Adoption-Implementation-Maintenance (RE-AIM) framework. Viral elimination, defined as the proportion of identified HCV-RNA positive PWUD achieving sustained virologic response (SVR), was the primary outcome.</div></div><div><h3>Results</h3><div>Reach: 870 anti-HCV tests were performed, 29 HCV-RNA positive PWUD were enrolled. Effectiveness: 23 patients initiated and completed on-site treatment, three patients were referred for treatment, two patients were lost to follow-up and one patient refused treatment. All patients tested for SVR achieved SVR, one patient was lost to follow-up before SVR test. The elimination rate was 86 % (25/29). Adoption: five out of eleven addiction care organizations (45 %) implemented decentralized HCV care within addiction care. Implementation fidelity was high.</div></div><div><h3>Conclusion</h3><div>This study demonstrates that successfully implemented decentralized HCV care within addiction services is feasible and highly effective, achieving an elimination rate of 86 %. However, adoption of decentralized HCV care was limited, underscoring the need for targeted strategies to enhance implementation. Our findings support expanding of decentralized HCV care models in addiction settings to meet HCV elimination targets.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113014"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145923351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2025-12-12DOI: 10.1016/j.drugalcdep.2025.113002
Julio C. Nunes, Joao P. De Aquino
{"title":"Addiction research and national resilience: Protecting surveillance, treatment development, and integrated care","authors":"Julio C. Nunes, Joao P. De Aquino","doi":"10.1016/j.drugalcdep.2025.113002","DOIUrl":"10.1016/j.drugalcdep.2025.113002","url":null,"abstract":"","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113002"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146184711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-01Epub Date: 2026-01-20DOI: 10.1016/j.drugalcdep.2026.113050
Mikael Staaf, Anna E. Masser , Camilla Pramfalk , Robert Pendrill, Sara Moses, Johan Lindholm, Tryggve Ljung
Background
Nicotine pouches (NPs) have different formulations (e.g., dry or moist), and the vast majority are flavored. However, it is unclear if flavors exert any effect on nicotine pharmacology and subjective parameters.
Methods
Data from two, open-label, randomized, nine-way cross-over, single-dose administration, pharmacokinetic and subjective effects studies were analyzed, evaluating dry 6-mg and moist 9-mg NPs, respectively. The studies included unflavored and flavored varieties (flavor characteristics: traditional [tobacco], cooling, minty, fruit, beverage). All participants were adults who currently used snus and/or NPs daily (n = 38 for moist, n = 39 for dry).
Results
Maximum plasma concentrations (Cmax) of nicotine were observed at NP removal at ~60 min (Tmax), with overlapping geometric least squares mean (GLSM) values for the dry and moist products (12.08–15.07 ng/mL). The total nicotine exposure (calculated as area under the curve from time point 0 to infinity, AUCinf) was 40.84–50.86 h⁎ng/mL, with overlapping GLSM values for dry and moist varieties. Equivalence testing for AUCinf and Cmax between unflavored and flavored varieties showed equivalence for all varieties except two of the moist minty NPs. For subjective parameters, the effect of flavor was more pronounced for moist NPs, with participants rating the flavored varieties higher for satisfaction, product liking, and intent to use again.
Conclusions
For dry varieties, flavor had no effect on Cmax and AUCinf, but two moist varieties were different from moist unflavored. Flavor did not affect Tmax for dry or moist NPs. Considerable variation in participant preferences suggest a need for diverse varieties and product types.
{"title":"Randomized studies assessing the effect of flavor on pharmacokinetic and subjective parameters for dry and moist nicotine pouches","authors":"Mikael Staaf, Anna E. Masser , Camilla Pramfalk , Robert Pendrill, Sara Moses, Johan Lindholm, Tryggve Ljung","doi":"10.1016/j.drugalcdep.2026.113050","DOIUrl":"10.1016/j.drugalcdep.2026.113050","url":null,"abstract":"<div><h3>Background</h3><div>Nicotine pouches (NPs) have different formulations (e.g., dry or moist), and the vast majority are flavored. However, it is unclear if flavors exert any effect on nicotine pharmacology and subjective parameters.</div></div><div><h3>Methods</h3><div>Data from two, open-label, randomized, nine-way cross-over, single-dose administration, pharmacokinetic and subjective effects studies were analyzed, evaluating dry 6-mg and moist 9-mg NPs, respectively. The studies included unflavored and flavored varieties (flavor characteristics: traditional [tobacco], cooling, minty, fruit, beverage). All participants were adults who currently used snus and/or NPs daily (n = 38 for moist, n = 39 for dry).</div></div><div><h3>Results</h3><div>Maximum plasma concentrations (C<sub>max</sub>) of nicotine were observed at NP removal at ~60<!--> <!-->min (T<sub>max</sub>), with overlapping geometric least squares mean (GLSM) values for the dry and moist products (12.08–15.07<!--> <!-->ng/mL). The total nicotine exposure (calculated as area under the curve from time point 0 to infinity, AUC<sub>inf</sub>) was 40.84–50.86<!--> <!-->h⁎ng/mL, with overlapping GLSM values for dry and moist varieties. Equivalence testing for AUC<sub>inf</sub> and C<sub>max</sub> between unflavored and flavored varieties showed equivalence for all varieties except two of the moist minty NPs. For subjective parameters, the effect of flavor was more pronounced for moist NPs, with participants rating the flavored varieties higher for satisfaction, product liking, and intent to use again.</div></div><div><h3>Conclusions</h3><div>For dry varieties, flavor had no effect on C<sub>max</sub> and AUC<sub>inf</sub>, but two moist varieties were different from moist unflavored. Flavor did not affect T<sub>max</sub> for dry or moist NPs. Considerable variation in participant preferences suggest a need for diverse varieties and product types.</div></div>","PeriodicalId":11322,"journal":{"name":"Drug and alcohol dependence","volume":"279 ","pages":"Article 113050"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}