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Harada T, Kanamori S, Baba T, Takano A, Nomura K, Villaroman A, Rey FI, Peralta J, Shirasaka T. Sociodemographic profiles and determinants of relapse risks among people with substance use disorders in the Philippines: A survey in community and residential care settings. Drug Alcohol Depend 2023; 251:110924. [PMID: 37633130 DOI: 10.1016/j.drugalcdep.2023.110924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/28/2023]
Abstract
BACKGROUND Methamphetamine use is a major social and health issue in the Philippines. Former president Rodrigo Duterte prioritized combating illicit drugs, and the government launched an anti-drug campaign. People with substance use disorders (SUD) receive treatment and care in the community or residential treatment at Treatment and Rehabilitation Centers (TRCs) established by the Department of Health. However, since the content and quality of service are not sufficient, there is an urgent need for improvement. To this end, it is necessary to understand demographic characteristics, the severity of drug use, and treatment needs of this population. METHODS We conducted a questionnaire survey of people with SUD in the community (n=308) and all TRC patients (n=1770) to obtain their demographic profiles. We also used the Drug Abuse Screening Test-20 (DAST-20) and the Stimulant Relapse Risk Scale (SRRS). RESULTS Based on DAST-20 scores, the severity of dependence was not well-matched to the care provided; 12.4% of the community sample was in the severe or substantial categories and 14.2% of the TRC sample was in the low category. The TRC sample had a significantly higher relapse risk than the community sample, which was associated with a lower educational attainment level and comorbid alcohol dependence. CONCLUSIONS It is important to use standardized psychometric tools to match treatment with the severity of drug dependence. In addition, a wide variety of medical and social services need to be provided based on consideration of treatment needs to improve the well-being of this population.
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Rouhani S, Tomko C, Silberzahn BE, Weicker NP, Sherman SG. Racial Disparities in Drug Arrest Before and After De Facto Decriminalization in Baltimore. Am J Prev Med 2023; 65:560-567. [PMID: 37068597 DOI: 10.1016/j.amepre.2023.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 04/12/2023] [Accepted: 04/12/2023] [Indexed: 04/19/2023]
Abstract
INTRODUCTION To mitigate the harms of arrest and incarceration on health and racial equity, jurisdictions are increasingly enacting reforms to decriminalize drug possession through prosecutorial discretion (de facto). Impacts on health outcomes rely on whether this policy can reduce exposure to the carceral system among people who use drugs; however, data evaluating effects on arrest are lacking. This study explores the possible impacts of Baltimore City's enactment of de facto decriminalization on arrests by race. METHODS Police and court records were used to explore the possible impacts of Baltimore City's de facto decriminalization on street arrests and (processed) arrests advancing through the courts among people who use drugs. Interrupted time series models were used to compare pre-policy (January 2018-March 2020) trends with post-policy (April 2020-December 2021) trends in arrests for possession of drugs/paraphernalia and estimate racial disparities in street arrests (Black versus other races). Analyses were performed in February-May 2022. RESULTS The policy was associated with a significant and immediate decline in street and processed arrests for possession, which was not seen for other crime categories. Although declines were concentrated in the Black community, disparities in arresting persisted after the policy. CONCLUSIONS De facto decriminalization may be a promising strategy to reduce exposure to the carceral system, an established risk factor for overdose and other drug-related sequelae and a driver of racial disparities in the U.S. Further research is needed to elucidate the drivers of persisting racial disparities and disentangle policy effects from pandemic-related closures.
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Villarreal M, Belmonte V, Ré S, García-Algar Ó. Detection of illicit psychoactive substances in the urine of mothers and newborn infants at a public hospital. Comparison between the 2009-2013 and 2014-2018 five-year periods. ARCH ARGENT PEDIATR 2023; 121:e202202900. [PMID: 37058284 DOI: 10.5546/aap.2022-02900.eng] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Introduction. The use of illicit psychoactive substances during pregnancy is a growing problem. Few Latin American maternity centers implement a screening strategy, and published data are scarce. Objectives. To compare the outcomes of 2 five-year periods of a postpartum strategy to screen for illicit psychoactive drugs. Population and methods. This was a cross-sectional study. Immunoassay detection in urine of mother-newborn infant dyads in an Argentine public hospital between 2009 and 2018. Results. Substances were detected in 76/191 dyads over 10 years. The most frequent detection criterion was reporting or history of drug use: 25/37 and 32/39 in each five-year period. Cannabis (21/37 and 26/39) and cocaine (19/37 and 16/39) predominated in both periods. No differences were observed in demographic, gynecological, pregnancy, or neonatal data between both five-year periods. Conclusions. No differences were found in the frequency or type of substances detected over 10 years.
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Torres C, Bauer G, Aubriet S, Scholtes C, Bailly F, Maynard-Muet M, Pradat P, Pillot-Meunier F, Lespine LF, Rolland B. Profile of patients with a positive HCV viral load in a large French psychiatric hospital (2019-2021): A case-control study. J Viral Hepat 2023; 30:830-833. [PMID: 37485610 DOI: 10.1111/jvh.13875] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/25/2023]
Abstract
Hepatitis C virus (HCV) is highly prevalent in people with mental disorders (PWMDs). However, in the international context of HCV elimination, no previous study has explored the features of seropositive PWMDs with vs. without a positive viral load (VL). We retrospectively retrieved all HCV serology results of patients hospitalized in 2019, 2020 and 2021 in the second-largest psychiatric hospital of France. Using the medical records of all patients found seropositive for HCV, the following data were collected: sex (male, female), age (in years), previous history of illicit drug use except cannabis (yes or no) and previous history of incarceration (yes or no). We conducted a case-control comparison of these variables between the PWMDs who had and did not have a positive VL, thus providing odds ratios and 95% confidence intervals (ORs [95% CI]). In a total of 13,276 inpatients, 2540 (19.1%) underwent at least one HCV serology; 55 of them (2.16%) were found positive. A VL count was performed for 48 of them, finding 15 (31.3%) individuals with active HCV. Compared with those with a negative VL, these 15 individuals were less likely to have previous documented illicit drug use (OR = 0.18; 95% CI [0.05-0.68]) and to have been previously incarcerated (OR = 0.23; 95% CI [0.06-0.99]); age and sex did not statistically differ. In the context of HCV elimination, PWMDs yet to be treated for HCV are more likely to be those with no identified risk factor for HCV, which supports a strategy of systematic screening for HCV among PWMDs.
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Au RT, Hotham E, Suppiah V. Guidelines and treatment for illicit drug related presentations in emergency departments: A scoping review. Australas Psychiatry 2023; 31:625-634. [PMID: 37548216 PMCID: PMC10566224 DOI: 10.1177/10398562231191671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
OBJECTIVE This review aimed to identify current pharmacological and non-pharmacological treatment employed in emergency departments (EDs) for the management of patients presenting with illicit drug-related presentations (IDP) and compare current treatments with recommendations provided in guidelines. METHOD The review consists of English peer-reviewed journal articles and grey literature published in electronic databases: Ovid MEDLINE, PubMed, Embase Classic+Embase, Ovid Emcare and APA PsycInfo between 2015 and 2022. RESULTS Twelve studies were identified from the search, with agitation and aggression being the most common presentations, and cannabis being the most prevalent illicit drug. Ventilatory support and restraints were the most reported non-pharmacological interventions while benzodiazepines and antipsychotics were the most commonly prescribed pharmacological agents. Non-coercive de-escalation strategies were recommended in all guidelines, with verbal de-escalation being the initial approach before other interventions, such as medications and restraints. However, de-escalation strategies were not reported in any studies. CONCLUSIONS Pharmacological interventions for patients with IDP and related symptoms were in accordance with guidelines. Use of restraints was identified in included studies with notable lack of reporting of de-escalation strategies which may have been deemed insignificant and not reported. Future research could investigate the appropriateness of restrictive interventions as well as the employment of non-restrictive de-escalation strategies.
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Cheng VS, Lapto FK. The Impact of Later Life Events on Cessation Motivation of Older Adults with Substance Use Disorder in Hong Kong. INTERNATIONAL JOURNAL OF OFFENDER THERAPY AND COMPARATIVE CRIMINOLOGY 2023; 67:1362-1382. [PMID: 37085989 DOI: 10.1177/0306624x231165421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Life-course researchers have found that age-graded life events, such as marriage and employment, may provoke a turning point in the trajectories of substance use and motivate young adults with substance use disorder (SUD) to seek addiction treatment and cease illegal drug use. However, few studies have focused on the impact of the life events experienced by older adults with SUD in their later life on these trajectories. Even less is known about this phenomenon in non-Western contexts. Thus, we conducted interviews with 34 older individuals with SUD in Hong Kong and explored how later life events affected their motivation to cease illegal drug use. Our findings highlight the influence of age on how life events are experienced and the need for age-specific academic studies of substance use trajectories. The results also have implications for policymakers, as the criminalization and stigmatization of drug use may have a negative impact on the trajectories of substance use among older populations.
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Cheah YK, Zainuddin NH, Kee CC, Lim KH, Omar MA, Cheong YL. Lifestyles and Sexual Behaviour Among School-Going Adolescents: A Mediational Role of Mental Health. Clin Child Psychol Psychiatry 2023; 28:1341-1357. [PMID: 36428238 DOI: 10.1177/13591045221142497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sexual behaviour and mental health among adolescents are major public health issues. This study examines how lifestyles affect sexual behaviour among school-going adolescents in Malaysia, and the potential mediational role of mental health. It is the first to our knowledge to explore the mediating effect of mental health on sexual behaviour with a focus on a fast-growing developing country. Data were obtained from the National Health and Morbidity Survey 2017 (n = 27,497). Structural equation modelling was utilized to examine depression and anxiety as mediators of the relationships between sexual behaviour and smoking, alcohol drinking and illicit drug use, controlling for sociodemographic factors. Results showed that adolescents who smoked, consumed alcohol, used illicit drugs, and had depression and anxiety were more likely to engage in sexual behaviour than others. Depression and anxiety partially mediated the relationships between sexual behaviour and smoking, and illicit drug use. The association between alcohol drinking and sexual behaviour was fully mediated by depression and anxiety. In conclusion, lifestyles may affect sexual behaviour through mediation of mental health. Therefore, policymakers should take mental health factors into consideration when designing adolescent sexual behaviour preventative interventions.
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North CS, Pfefferbaum B. Tobacco and Illicit Drug Use and Drug Use Disorders Among Employees of Businesses Affected by the 9/11 Attacks on the World Trade Center in New York City. J Dual Diagn 2023; 19:180-188. [PMID: 37796633 PMCID: PMC10624119 DOI: 10.1080/15504263.2023.2260328] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
OBJECTIVE To study the New York City area population after the September 11, 2001, 9/11 attacks, focusing on tobacco and drug use and drug use disorders. An abundance of research has identified the important mental health sequelae stemming from exposure to disasters, especially vulnerability to the development of posttraumatic stress disorder (PTSD) and major depressive disorder (MDD). There also is a body of literature on the association of disaster exposure with alcohol use/misuse, but far less research on tobacco and other drug use/disorders. METHODS A terrorism-affected sample (N = 379) was assessed nearly 3 years after the attacks using structured diagnostic interviews, providing predisaster and postdisaster prevalence and incidence of tobacco and drug use, changes in tobacco and drug use, and predisaster and postdisaster prevalence and incidence of drug use disorders in relation to the 9/11 attacks. DSM-IV criteria were fully assessed using structured diagnostic interviews for psychiatric disorders including PTSD, MDD, panic disorder, generalized anxiety disorder, and alcohol and drug use disorders. RESULTS Tobacco use did not increase significantly, and no predictors of increased tobacco use could be found for any subgroups, including disaster trauma exposures. Drug use (largely cannabis) increased initially but decreased by 3 years after the attacks. Drug use disorders, which were associated with other psychiatric disorders, were rare and primarily began prior to 9/11. CONCLUSIONS The overall lack of increase of tobacco use or predictors of increased use found after the disaster and the low rates of new drug use disorders suggest that universal screening for increased tobacco use and new drug use disorders by clinicians may have very low yield. Regardless, postdisaster settings provide suitable circumstances for general discussions about self-care including concern for increased tobacco use, avoiding drug use, and guidance on healthier means of managing stress than through substances. Additionally, because existing tobacco and drug use are endemic in populations, the postdisaster setting can serve as a reminder for clinicians to assess these problems generally and provide appropriate referrals when needed. Postdisaster circumstances offer opportunities to disseminate and promote public health messages and address issues of substance use and misuse.
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Silva Rodrigues OA, Mogaji HO, Alves LC, Flores-Ortiz R, Cremonese C, Nery JS. Factors associated with unsuccessful tuberculosis treatment among homeless persons in Brazil: A retrospective cohort study from 2015 to 2020. PLoS Negl Trop Dis 2023; 17:e0011685. [PMID: 37862375 PMCID: PMC10619819 DOI: 10.1371/journal.pntd.0011685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 11/01/2023] [Accepted: 09/26/2023] [Indexed: 10/22/2023] Open
Abstract
BACKGROUND Tuberculosis (TB) is a preventable and a curable disease. In Brazil, TB treatment outcomes are particularly worse among homeless populations who are either of black race, malnourished or living with HIV/AIDS and other comorbidities. This study therefore evaluated factors associated with unsuccessful TB treatment among homeless population (HP) compared to those with shelter. METHODOLOGY/PRINCIPAL FINDINGS The study population was composed of 284,874 people diagnosed with TB in Brazil between 2015 and 2020 and reported in the Information System for Notifiable Diseases (SINAN), among which 7,749 (2.72%) were homeless and 277,125 (97.28%) were sheltered. Cox regression analysis was performed with both populations to identify factors associated with unsuccessful TB treatment, and significant predictors of TB treatment outcomes. Results show that HP are more susceptible to unfavorable outcomes when compared to sheltered people (Hazard Ratio (HR): 2.04, 95% CI 1.82-2.28). Among the HP, illicit drug use (HR: 1.38, 95% CI 1.09-1.74), mental disorders (HR: 2.12, 95% CI 1.08-4.15) and not receiving directed observed treatment (DOT) (HR: 18.37, 95% CI 12.23-27.58) are significant predictors of poor treatment outcomes. The use of illicit drugs (HR: 1.53, 95% CI 1.21-1.93) and lack of DOT (HR: 17.97, 95% CI 11.71-27.59) are associated with loss to follow-up, while lack of DOT (HR: 15.66, 95% CI 4.79-51.15) was associated with mortality among TB patients. CONCLUSION/SIGNIFICANCE Homeless population living in Brazil are twice at risk of having an unsuccessful treatment, compared to those who are sheltered, with illicit drugs use, mental disorders and lack of DOT as risk factors for unsuccessful TB outcomes. Our findings reinforce the arguments for an intersectoral and integral approach to address these determinants of health among the vulnerable homeless populations.
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Cain D, Salsabilian B, Jones SS, Starks TJ. Substance Use, Sexual Agreements, and Sexual Risk Behaviors Among Adolescent Sexual Minority Males (Aged 13-17) in the United States. J Adolesc Health 2023; 73:746-752. [PMID: 37410007 PMCID: PMC10526709 DOI: 10.1016/j.jadohealth.2023.05.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 05/15/2023] [Accepted: 05/31/2023] [Indexed: 07/07/2023]
Abstract
PURPOSE Despite the fact that adolescence represents a distinct developmental period wherein dating and sexual relationships are emergent, much of what is known about substance use, sexual agreements, and sexual risk behaviors among adolescent sexual minority males (ASMM) is extrapolated from research on adults. This study tested associations between substance use and sexual risk behaviors among ASMM and examined whether relationship status and sexual agreements moderated these associations. METHODS Cross-sectional online survey data were collected from 2,892 HIV negative ASMM aged 13-17 years between November 2017 and March 2020. All were sexually active with male partners and not on pre-exposure prophylaxis. A multigroup hurdle model predicted the occurrence and frequency of condomless anal sex (CAS) with casual partners. RESULTS Non-monogamous ASMM were more likely to use illicit drugs and more likely to have CAS with casual partners compared with single ASMM and those in monogamous relationships. Among ASMM who had CAS at least once, those in relationships (both monogamous and nonmonogamous) had CAS more frequently than single ASMM. Binge drinking (odds ratio (OR) = 1.47, p < .001), cannabis (OR = 1.30, p < .001), and illicit drug use (including prescription drug misuse) (OR = 1.77, p < .001) were associated with the occurrence of CAS with casual partners but only binge drinking (rate ratio (RR) = 1.23, p = .027) and illicit drugs (RR = 1.75, p < .001) were associated with its frequency. DISCUSSION While results aligned with adult studies in many respects, unlike adult sexual minority males, these findings suggest partnered ASMM-particularly those in nonmonogamous relationships-were at highest risk of substance use and associated sexual HIV transmission risk.
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Massad S, Dalloul H, Adwan L, Saman KA, Kafri R, Alia WA, Tucktuck M, Johnston LG. Alarmingly high prevalence of high-risk drug use among palestinian males: a cross-sectional study. BMC Psychiatry 2023; 23:700. [PMID: 37752457 PMCID: PMC10521504 DOI: 10.1186/s12888-023-05190-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND The unique socioeconomic context in Palestine, characterized by political and economic tensions, creates conditions that facilitate the spread of illicit drug use among Palestinians. This paper presents findings from a 2017 survey of high-risk drug use (HRDU) among males in four regions in Palestine: the West Bank (north, middle, and south) and the Gaza Strip. These findings are essential for developing effective policies to respond to the increasing use of drugs among Palestinians. METHODS Eligible participants were males aged 15 years and above who used at least one drug other than non-synthetic hashish or marijuana during the previous week. Participants underwent a face-to-face interview and had their drug use verified by urinalysis. Data were collected using respondent-driven sampling and data were analyzed using the successive sampling estimator. Multivariate regression analysis was conducted to examine factors associated with ever seeking rehabilitation services for illicit drug use in the West Bank and the Gaza Strip. RESULTS A total of 400 males who use drugs were sampled in Gaza, plus 299 in the south, 300 in the north, and 299 in the middle region of the West Bank. It is estimated that there are 26,500 male HRDUs in Palestine comprising 1.8% of the male population aged 15 and above. Findings indicate that polydrug use is a serious issue in Palestine, especially in the West Bank, and that synthetic marijuana is prevalent among teenagers and young adults. CONCLUSIONS Palestine must strengthen its national efforts to scale up harm reduction and treatment and care options for people suffering from drug use disorders, especially those involved in polydrug use. Additional measures are needed to prevent substance use among children and youth, support the families of people who use drugs, and ensure the continuity of HRDU services during emergencies.
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McNeely J, McLeman B, Gardner T, Nesin N, Amarendran V, Farkas S, Wahle A, Pitts S, Kline M, King J, Rosa C, Marsch L, Rotrosen J, Hamilton L. Implementation of substance use screening in rural federally-qualified health center clinics identified high rates of unhealthy alcohol and cannabis use among adult primary care patients. Addict Sci Clin Pract 2023; 18:56. [PMID: 37726839 PMCID: PMC10510292 DOI: 10.1186/s13722-023-00404-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 07/31/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Screening for substance use in rural primary care clinics faces unique challenges due to limited resources, high patient volumes, and multiple demands on providers. To explore the potential for electronic health record (EHR)-integrated screening in this context, we conducted an implementation feasibility study with a rural federally-qualified health center (FQHC) in Maine. This was an ancillary study to a NIDA Clinical Trials Network study of screening in urban primary care clinics (CTN-0062). METHODS Researchers worked with stakeholders from three FQHC clinics to define and implement their optimal screening approach. Clinics used the Tobacco, Alcohol, Prescription Medication, and Other Substance (TAPS) Tool, completed on tablet computers in the waiting room, and results were immediately recorded in the EHR. Adult patients presenting for annual preventive care visits, but not those with other visit types, were eligible for screening. Data were analyzed for the first 12 months following implementation at each clinic to assess screening rates and prevalence of reported unhealthy substance use, and documentation of counseling using an EHR-integrated clinical decision support tool, for patients screening positive for moderate-high risk alcohol or drug use. RESULTS Screening was completed by 3749 patients, representing 93.4% of those with screening-eligible annual preventive care visits, and 18.5% of adult patients presenting for any type of primary care visit. Screening was self-administered in 92.9% of cases. The prevalence of moderate-high risk substance use detected on screening was 14.6% for tobacco, 30.4% for alcohol, 10.8% for cannabis, 0.3% for illicit drugs, and 0.6% for non-medical use of prescription drugs. Brief substance use counseling was documented for 17.4% of patients with any moderate-high risk alcohol or drug use. CONCLUSIONS Self-administered EHR-integrated screening was feasible to implement, and detected substantial alcohol, cannabis, and tobacco use in rural FQHC clinics. Counseling was documented for a minority of patients with moderate-high risk use, possibly indicating a need for better support of primary care providers in addressing substance use. There is potential to broaden the reach of screening by offering it at routine medical visits rather than restricting to annual preventive care visits, within these and other rural primary care clinics.
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Lorvick J, Hemberg J, George MJ, Piontak J, Comfort ML. Understanding polysubstance use at the daily and event levels: protocol for a mixed-methods qualitative and ecological momentary assessment study in a community-based sample of people who use illicit drugs in Oakland, California, USA. BMJ Open 2023; 13:e075380. [PMID: 37699625 PMCID: PMC10503366 DOI: 10.1136/bmjopen-2023-075380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 08/30/2023] [Indexed: 09/14/2023] Open
Abstract
INTRODUCTION Polysubstance use is extremely common among people who use illicit opioids in the USA. It is associated with poor substance use treatment outcomes, infectious disease risk and alarming rates of drug overdose. Nearly all extant literature examines polysubstance use over broad time frames, such as 30 days or 6 months. However, both substance use and overdose risk are episodic. To build a stronger understanding of polysubstance use and overdose risk, we need to expand the knowledge base to include daily-level and event-level data that examine how substances are used together, in which combinations and in which contexts. The study described in this protocol will use qualitative and ecological momentary assessment (EMA) methods to examine polysubstance use and overdose risk on a daily and event level. METHODS AND ANALYSIS This is a mixed-methods observational study with three phases. The first phase is formative, consisting of qualitative interviews with people who use multiple substances (N=20), to inform the development of items for the EMA component. The second phase is EMA data collection with people who use multiple substances (N=120), three times daily for 28 days. The third phase consists of mixed-methods inquiries with a subset of participants (N=20), using participant-level EMA data and qualitative techniques to build a nuanced understanding of the motivations and contexts of polysubstance use in everyday life. Analytical induction methods will be used to interpret qualitative data. Hierarchical linear modelling methods will be used to analyse EMA data. ETHICS AND DISSEMINATION This research has been reviewed and approved by the Institutional Review Board at RTI International (#MOD00001782 for EMA procedures and #MOD00001241 for qualitative procedures). Participants engage in an informed consent procedure for each component of the study. Data will be managed and shared per the National Institutes of Health extramural data sharing policy.
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Lorvick J, Hemberg JL, George MJ, Piontak JR, Comfort ML. "Just another thing for me to stress off of": Responses to unintentional fentanyl use in a community-based study of people who use opioids. Harm Reduct J 2023; 20:128. [PMID: 37684603 PMCID: PMC10486054 DOI: 10.1186/s12954-023-00863-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
The unintentional consumption of fentanyl is a serious health risk for people who use illicit drugs. In an ongoing community-based study regarding polysubstance use among people who use opioids, we found that 17 of 58 (29%) of participants who did not endorse fentanyl use in the past thirty days tested positive for fentanyl during point-of-care urinalysis (UA). This paper describes the reactions and experiences of participants who were informed they had consumed fentanyl unintentionally, as well as how the research team handled the unanticipated occurrence of discordant results. Consistent with other recent studies, we found that people learning of unintentional fentanyl use expressed strong concerns about accidental overdose. It was common for participants to reflect on recent substance use experiences that were atypical and might have involved fentanyl, as well as to examine sources of recent drug purchases. While not all participants were surprised that they had unintentionally consumed fentanyl, all felt that learning their positive results was important due to risk of overdose. Research and medical staff have an opportunity to promote awareness of possible contamination by sharing and discussing UA test results with people who use drugs in non-judgmental manner. In addition to the widely promoted harm reduction strategy of testing drugs with fentanyl test strips, self-administered point-of-care UA, particularly after an unexpected reaction to using a drug, could provide useful information for people buying and using illicit drugs.
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Lemos-Santos P, Blumrich L, Debia JB, Castaldelli-Maia JM, Suen PJC, Malbergier A. Drug use among medical students in São Paulo, Brazil: a cross-sectional study during the coronavirus disease 2019 pandemic. SAO PAULO MED J 2023; 142:e2022493. [PMID: 37703121 PMCID: PMC10495101 DOI: 10.1590/1516-3180.2022.0493.r1.150623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 05/09/2023] [Accepted: 06/15/2023] [Indexed: 09/15/2023] Open
Abstract
BACKGROUND Medical students demonstrate higher rates of substance use than other university students and the general population. The challenges imposed by the coronavirus disease 2019 (COVID-19) pandemic raised significant concerns about mental health and substance use. OBJECTIVES Assess the current prevalence of substance use among medical students at the University of São Paulo and evaluate the impact of the COVID-19 pandemic on drug consumption. DESIGN AND SETTING A cross-sectional study was conducted on 275 medical students from the University of São Paulo Medical School (São Paulo, Brazil) in August 2020. METHODS Substance use (lifetime, previous 12 months, and frequency of use before and during the COVID-19 pandemic) and socioeconomic data were assessed using an online self-administered questionnaire. Symptoms of depression were assessed using the Patient Health Questionnaire-9. RESULTS Alcohol was the most consumed substance in their lifetime (95.6%), followed by illicit drugs (61.1%), marijuana (60%), and tobacco (57.5%). The most commonly consumed substances in the previous year were alcohol (82.9%), illicit drugs (44.7%), marijuana (42.5%), and tobacco (36%). Students in the first two academic years consumed fewer substances than those from higher years. There was a decreasing trend in the prevalence of most substances used after the COVID-19 pandemic among sporadic users. However, frequent users maintained their drug use patterns. CONCLUSION The prevalence of substance use was high in this population and increased from the basic to the clinical cycle. The COVID-19 pandemic may have affected the frequency of drug use and prevalence estimates.
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Teixidó E, Riera-Colomer C, Raldúa D, Pubill D, Escubedo E, Barenys M, López-Arnau R. First-Generation Synthetic Cathinones Produce Arrhythmia in Zebrafish Eleutheroembryos: A New Approach Methodology for New Psychoactive Substances Cardiotoxicity Evaluation. Int J Mol Sci 2023; 24:13869. [PMID: 37762171 PMCID: PMC10531093 DOI: 10.3390/ijms241813869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
The increasing number of new psychoactive substances (NPS) entering the illicit drug market, especially synthetic cathinones, as well as the risk of cardiovascular complications, is intensifying the need to quickly assess their cardiotoxic potential. The present study aims to evaluate the cardiovascular toxicity and lethality induced by first-generation synthetic cathinones (mephedrone, methylone, and MDPV) and more classical psychostimulants (cocaine and MDMA) in zebrafish embryos using a new approach methodology (NAM). Zebrafish embryos at 4 dpf were exposed to the test drugs for 24 h to identify drug lethality. Drug-induced effects on ventricular and atrial heart rate after 2 h exposure were evaluated, and video recordings were properly analyzed. All illicit drugs displayed similar 24 h LC50 values. Our results indicate that all drugs are able to induce bradycardia, arrhythmia, and atrial-ventricular block (AV block), signs of QT interval prolongation. However, only MDPV induced a different rhythmicity change depending on the chamber and was the most potent bradycardia and AV block-inducing drug compared to the other tested compounds. In summary, our results strongly suggest that the NAM presented in this study can be used for screening NPS for their cardiotoxic effect and especially for their ability to prolong the QT intervals.
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Churchill V, Fairman RT, Brown D, Massey ZB, Ashley DL, Popova L. "I Get the Flavors and It Makes Me Love Vaping More": How and Why Youth Users Modify Electronic Nicotine Delivery Systems. Nicotine Tob Res 2023; 25:1791-1797. [PMID: 37358211 PMCID: PMC10475604 DOI: 10.1093/ntr/ntad104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 06/06/2023] [Accepted: 06/23/2023] [Indexed: 06/27/2023]
Abstract
INTRODUCTION Youth in the United States are using electronic nicotine delivery systems (ENDS) at a high rate. Modifications to ENDS by youth can introduce additional health hazards which have not been previously considered. To better understand these risks, we need more information on what these modifications are, the motivations behind them, and the sources of information on modifications. AIMS AND METHODS Utilizing a trained moderator, in 2020-2021, we conducted one-on-one interviews with 19 youth ENDS users aged 16-17 living in the United States and analyzed their responses using a qualitative description approach. RESULTS The most prominent modification was to the e-liquid; youth indicated they mixed e-juices to create new flavors and added substances not intended for vaping, including illicit drugs such as cannabis and cocaine. Few youths from our sample were interested in achieving a specific nicotine level to vape, and modifications to the battery, coil and wick were less frequently mentioned. Some of these modifications were motivated by a desire to achieve specific experiences with their device. At other times, modifications were made due to necessity because of limited access to ENDS devices and supplies. YouTube and peers were the main sources of information about modifying. CONCLUSIONS Youth are making modifications that are both intended and unintended by the manufacturer. Adding illicit drugs and other substances not made for vaping is of particular concern. Understanding how youth modify ENDS and how that changes their use is important to guide regulatory policy intended to reduce harm to youth from ENDS use. IMPLICATIONS Youth from our study indicated that they make modifications to the ENDS devices, specifically to the e-liquid. These modifications are both intended by the manufacturer, such as changing the e-liquid and replacing coils, and unintended, such as adding substances not meant for vaping. Future policies aimed at reducing youth ENDS use should consider mandating better safeguards against modifications that appeal to youth.
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Toske SG, Mitchell JR, Myslinski JM, Walz AJ, Guthrie DB, Guest EM, Corbett CA, Lockhart ED. Organic impurity profiling of fentanyl samples associated with recent clandestine laboratory methods. J Forensic Sci 2023; 68:1470-1483. [PMID: 37203260 DOI: 10.1111/1556-4029.15281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/26/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
Nearly a decade ago, fentanyl reappeared in the United States illicit drug market. In the years since, overdose deaths have continued to rise as well as the amount of fentanyl seized by law enforcement agencies. Research surrounding fentanyl production has been beneficial to regulatory actions and understanding illicit fentanyl production. In 2017, the Drug Enforcement Administration (DEA) began collecting seized fentanyl samples from throughout the United States to track purity, adulteration trends, and synthetic impurity profiles for intelligence purposes. The appearance of a specific organic impurity, phenethyl-4-anilino-N-phenethylpiperidine (phenethyl-4-ANPP) indicates a shift in fentanyl production from the traditional Siegfried and Janssen routes to the Gupta-patent route. Through a collaboration between the DEA and the US Army's Combat Capabilities Development Command Chemical Biological Center (DEVCOM CBC), the synthesis of fentanyl was investigated via six synthetic routes, and the impurity profiles were compared to those of seized samples. The synthetic impurity phenethyl-4-ANPP was reliably observed in the Gupta-patent route published in 2013, and its structure was confirmed through isolation and structure elucidation. Organic impurity profiling results for illicit fentanyl samples seized in late 2021 have indicated yet another change in processing with the appearance of the impurity ethyl-4-anilino-N-phenethylpiperidine (ethyl-4-ANPP). Through altering reagents traditionally used in the Gupta-patent route, the formation of this impurity was determined to occur through a modification of the route as originally described in the Gupta patent.
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Favretto D, Cooper G, Andraus M, Sporkert F, Agius R, Appenzeller B, Baumgartner M, Binz T, Cirimele V, Kronstrand R, Del Mar Ramirez M, Strano-Rossi S, Uhl M, Vincenti M, Yegles M. The Society of Hair Testing consensus on general recommendations for hair testing and drugs of abuse testing in hair. Drug Test Anal 2023; 15:1042-1046. [PMID: 37332075 DOI: 10.1002/dta.3526] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/24/2023] [Accepted: 05/25/2023] [Indexed: 06/20/2023]
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Dertadian GC. Is non-medical use normal? Normalisation, medicalisation and pharmaceutical consumption. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2023; 119:104123. [PMID: 37454607 DOI: 10.1016/j.drugpo.2023.104123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
The theory of the normalisation of youth drug use in advanced capitalist societies has had an enduring legacy in contemporary drug scholarship. While the literature on the normalisation of 'illicit' drugs is well developed, less has been written about application of the theory to emerging discourse of pharmaceutical 'abuse', and how this might necessitate different thinking around what can be considered normal consumption. Pharmaceuticals are not directly associated with criminality, and their use does not traditionally attract stigma. In fact, social science scholarship has illustrated how many substances deemed illicit are normalised in the context of an ever-growing set of medical treatments. This paper explores the assumptions about legality, sociality and pleasure which sit behind the drug normalisation thesis, by reflecting on the relevance of drug normalisation in relation to pharmaceuticals, as well as examining scholarship on the medicalisation of society and qualitative research on non-medical use to illustrate the parallel processes of normalisation that apply to pharmaceuticals. The paper argues that questions of normalisation in relation to pharmaceutical use require a deeper engagement with the normative expectations we attach to pleasure, consumption and medicine, and the way this is structured by proximity to medical authority, whiteness and middle-classness.
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Zhang J, Zhang Y, Xu C, Huang Z, Hu B. Detection of abused drugs in human exhaled breath using mass spectrometry: A review. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9503. [PMID: 36914281 DOI: 10.1002/rcm.9503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/07/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
RATIONALE Human breath analysis has been attracting increasing interest in the detection of abused drugs in forensic and clinical applications because of its noninvasive sampling and distinctive molecular information. Mass spectrometry (MS)-based approaches have been proven to be powerful tools for accurately analyzing exhaled abused drugs. The major advantages of MS-based approaches include high sensitivity, high specificity, and versatile couplings with various breath sampling methods. METHODS Recent advances in the methodological development of MS analysis of exhaled abused drugs are discussed. Breath collection and sample pretreatment methods for MS analysis are also introduced. RESULTS Recent advances in technical aspects of breath sampling methods are summarized, highlighting active and passive sampling. MS methods for detecting different exhaled abused drugs are reviewed, emphasizing their features, advantages, and limitations. The future trends and challenges in MS-based breath analysis of exhaled abused drugs are also discussed. CONCLUSIONS The coupling of breath sampling methods with MS approaches has been proven to be a powerful tool for the detection of exhaled abused drugs, offering highly attractive results in forensic investigations. MS-based detection of exhaled abused drugs in exhaled breath is a relatively new field and is still in the early stages of methodological development. New MS technologies promise a substantial benefit for future forensic analysis.
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Maras MH, Logie K, Arsovska J, Wandt AS, Barthuly B. Decoding hidden darknet networks: What we learned about the illicit fentanyl trade on AlphaBay. J Forensic Sci 2023; 68:1451-1469. [PMID: 37515466 DOI: 10.1111/1556-4029.15341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023]
Abstract
The opioid epidemic, impacted from the proliferation of fentanyl, has added impetus to the need to detect fentanyl, sources of fentanyl, and places where fentanyl and drugs adulterated with fentanyl are available. Many darknet marketplaces (DNMs) have rules that ban fentanyl. However, it is unclear how these affect the fentanyl market. Using the AlphaBay DNM as a case study, we conducted mixed methods qualitative research. We scraped and analyzed data from the AlphaBay I2P website using, among other methods, content and social network analysis, to uncover hidden fentanyl networks. Our research highlights the next evolution of darknet marketplaces - the migration of DNMs from Tor to I2P and the methods that can be used identify fentanyl networks, irrespective of where sites are: I2P, Tor, or multihomed on I2P and Tor. Despite its ban in the Global AlphaBay Rules, our research revealed the sale of fentanyl on the AlphaBay DNM. Unlike previous studies, our findings predominantly revealed the covert sale of fentanyl on AlphaBay and predatory vendors selling illicit drugs, which unbeknownst to buyers, contained fentanyl. To a lesser extent, our findings identified the overt sale of fentanyl patches on AlphaBay. Although we examined only one DNM, the prevalence of the covert sale of fentanyl and the presence of predatory vendors underscores the importance of research that decodes the language of vendors who surreptitiously sell fentanyl or drugs adulterated with fentanyl or other illicit substances. The results of our research can inform strategies aimed at disrupting and dismantling DNM fentanyl networks.
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Bharat C, Webb P, Wilkinson Z, McKetin R, Grebely J, Farrell M, Holland A, Hickman M, Tran LT, Clark B, Peacock A, Darke S, Li JH, Degenhardt L. Agreement between self-reported illicit drug use and biological samples: a systematic review and meta-analysis. Addiction 2023; 118:1624-1648. [PMID: 37005867 DOI: 10.1111/add.16200] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 03/27/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND AND AIMS Studies often rely upon self-report and biological testing methods for measuring illicit drug use, although evidence for their agreement is limited to specific populations and self-report instruments. We aimed to examine comprehensively the evidence for agreement between self-reported and biologically measured illicit drug use among all major illicit drug classes, biological indicators, populations and settings. METHODS We systematically searched peer-reviewed databases (Medline, Embase and PsycINFO) and grey literature. Included studies reported 2 × 2 table counts or agreement estimates comparing self-reported and biologically measured use published up to March 2022. With biological results considered to be the reference standard and use of random-effect regression models, we evaluated pooled estimates for overall agreement (primary outcome), sensitivity, specificity, false omission rates (proportion reporting no use that test positive) and false discovery rates (proportion reporting use that test negative) by drug class, potential consequences attached to self-report (i.e. work, legal or treatment impacts) and time-frame of use. Heterogeneity was assessed by inspecting forest plots. RESULTS From 7924 studies, we extracted data from 207 eligible studies. Overall agreement ranged from good to excellent (> 0.79). False omission rates were generally low, while false discovery rates varied by setting. Specificity was generally high but sensitivity varied by drug, sample type and setting. Self-report in clinical trials and situations of no consequences was generally reliable. For urine, recent (i.e. past 1-4 days) self-report produced lower sensitivity and false discovery rates than past month. Agreement was higher in studies that informed participants biological testing would occur (diagnostic odds ratio = 2.91, 95% confidence interval = 1.25-6.78). The main source of bias was biological assessments (51% studies). CONCLUSIONS While there are limitations associated with self-report and biological testing to measure illicit drug use, overall agreement between the two methods is high, suggesting both provide good measures of illicit drug use. Recommended methods of biological testing are more likely to provide reliable measures of recent use if there are problems with self-disclosure.
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Sanford BT, Rojewski AM, Palmer AM, Baker NL, Carpenter MJ, Smith TT, Toll BA. E-Cigarette Screening in Primary Care. Am J Prev Med 2023; 65:517-520. [PMID: 36878414 PMCID: PMC10475485 DOI: 10.1016/j.amepre.2023.02.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
INTRODUCTION Primary care visits present an opportune time to assess behaviors that contribute to patient health. Smoking, alcohol use, and illicit drugs are routinely documented in electronic health records, but less is known about screening for E-cigarette use and the prevalence of E-cigarette use in primary care settings. METHODS Data include 134,931 adult patients who visited 1 of 41 primary care clinics within a 12-month period (June 1, 2021-June 1, 2022). Data on demographics, combustible tobacco, alcohol, illicit drug, and E-cigarette use were extracted from electronic medical records. Logistic regression was utilized to examine the variables associated with differential odds of being screened for E-cigarette use. RESULTS Rates of E-cigarette screening (n=46,997; 34.8%) were significantly lower than that of tobacco (n=134,196; 99.5%), alcohol (n=129,766; 96.2%), and illicit drug (n=129,766; 92.6%) use. Of those assessed for E-cigarette use, 3.6% (n=1,669) reported current use. Of those with documented nicotine use (n=7,032), 17.2% (n=1,207) used mono E-cigarettes exclusively, 76.3% (n=5,364) used combustible tobacco exclusively, and 6.6% (n=461) reported dual use (both E-cigarette use and combustible tobacco use). Those who used combustible tobacco or illicit substances as well as younger patients were more likely to have been screened for E-cigarette use. CONCLUSIONS Overall rates of E-cigarette screening were significantly lower than those of other substances. The use of combustible tobacco or illicit substances was associated with an increased likelihood of being screened. This finding may be because of the relatively recent proliferation of E-cigarettes, the recent addition of E-cigarette documentation to the electronic health record, or a lack of training on screening for E-cigarette use.
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Olding M, Boyd J, Kerr T, McNeil R. "We just don't have the space for it": Geographies of survival and spatial triage in overdose prevention sites. Health Place 2023; 83:103067. [PMID: 37352615 PMCID: PMC10589902 DOI: 10.1016/j.healthplace.2023.103067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/22/2023] [Accepted: 06/10/2023] [Indexed: 06/25/2023]
Abstract
This study explores the role of Overdose Prevention Sites (OPS) within the geographies of survival of vulnerably housed people who use drugs (PWUD) in Vancouver, British Columbia (BC), Canada. In BC, OPS are low-barrier spaces where people may use drugs under monitoring of trained staff. OPS have been established by people who use drugs, activists, and allied organizations as an emergency measure to prevent overdose deaths. However, OPS have other important uses for PWUD who are vulnerably housed and rely on public spaces for survival. Drawing on two years (2018-2020) of ethnographic fieldwork and interviews with fifty-five people who work at and/or use OPS, we explore how OPS operators negotiated multiple and at times competing uses of service space for everyday survival. Data analysis was guided by critical urban theory to explore the place of OPS within PWUD's geographies of survival, with attention to how different uses of space were negotiated within the context of an illicit drug poisoning crisis and urban control practices that displace and exclude unhoused and vulnerably housed PWUD from the city. We find that OPS accommodated other important potential uses of space for unhoused and vulnerably housed PWUD who relied on public space for survival and were routinely displaced by revanchist urban control strategies. Low-barrier approaches and facility enhancements to OPS improved program accessibility and enabled PWUD to use the sites more broadly to meet survival needs including for mutual-aid, sheltering, and income-generation. However, these secondary uses of OPS presented multiple operational challenges as service volumes increased. We observed processes of 'spatial triage' emerge within sites to manage these challenges, which we characterise as a pragmatic set of rules, procedures, and spatial practices that constrained broader uses of OPS within PWUD's geographies of survival. While spatial triage offered a pragmatic way of prioritizing service delivery to address the most acute survival threats of overdose fatality, these practices had unintended and inequitable impacts on service access. Our findings indicate the need for complementary structural changes as part of overdose responses to reduce the need for spatial triage (i.e., safe, affordable housing and drug decriminalisation) and service innovations to mitigate potential harms (e.g., Expanded drop-in and chill spaces, temporary storage spaces for service user).
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