HIV Prevalence and Related Behaviors Among People Who Inject Drugs in Iran from 2010 to 2020.

Injection drug use has been the leading route of HIV transmission in Iran. We assessed HIV prevalence, risk behaviors, and uptake of prevention services among people who inject drugs (PWID) in Iran between 2010 and 2020. We also examined the individual and environmental determinants of HIV among PWID. PWID were recruited in major cities across the country in three national bio--behavioral surveillance surveys in 2010, 2014, and 2020. Participants were tested for HIV and interviewed using a behavioral questionnaire. Between 2010 and 2020, the prevalence of HIV (15.1% to 3.5%), receptive needle sharing (25.2% to 3.9%) and unprotected sex (79.4% to 65.2%) decreased. Moreover, uptake of free needle/syringe increased (57.4% to 87.9%), while uptake of free condoms remained relatively stable across the surveys (34.3% to 32.6%). Multivariable analysis for the 2020 survey showed that a history of homelessness, incarceration, and a longer injection career significantly increased the odds of HIV seropositivity. During the past decade, HIV prevalence and drug- and sexual-related risk behaviors decreased among Iranian PWID. However, individual and structural determinants continue to drive HIV among this population. HIV prevention, diagnosis, and treatment among marginalized PWID with a history of homelessness or incarceration and those who inject drugs for a longer period, should be further prioritized in HIV care planning and resource allocation in Iran.

Exploring arts-based interventions for youth substance use prevention: a scoping review of literature.

INTRODUCTION: There is a rise in problematic substance use among Canadian youth, which is precipitating a public health crisis. Interventions are needed to empower youth to mitigate substance use risks. Active youth involvement in substance use prevention is urgently needed to increase uptake and ownership of the process and outcome of the intervention. Arts-based interventions are ideal participatory action approaches that can empower young people to be active agents in substance use prevention. These approaches can help promote health, reduce harm, and change behaviours. Scoping reviews are a vital tool that can help the research team identify relevant interventions that can be adapted to a community. METHODS: This scoping review explores various arts-based substance use prevention interventions for youth. The scoping review used the iterative stages of Arksey and O'Malley to search Portal ERIC, Ovid MEDLINE, C.I.N.A.H.L., E.M.B.A.S.E., Web of Science, and A.P.A. PsycInfo and grey literature from Canadian Centre on Substance Use and Addiction and websites suggested by the Canadian Agency for Drugs and Technologies in Health. Inclusion criteria are a) articles utilizing arts-based intervention on substance use prevention; b) studies with a clearly defined intervention; c) intervention targeting the youth (age 12-17) and d) publications written in English. Thematic analysis was used to identify the main themes from the included articles. RESULTS AND DISCUSSION: Themes identified in a thematic synthesis of these studies included a) the intent of the intervention; b) intervention characteristics; and c) the perceived effectiveness of interventions. Art-based interventions increased knowledge and changed attitudes and practices on substance use among youth. Making the interventions aesthetically appealing and engaging, active youth involvement in the development of the intervention and developing youth-centred interventions which attended to the realities they faced were central to the success of these interventions.

Family-based Interventions of Preventing Substance Use Among Immigrant Youth: A Scoping Review.

Introduction: Immigrant youth face heightened risks of substance use due to the stress associated with immigration and acculturation. While parental intervention can have a preventative impact on substance use, parents need to be well-informed about substance use and effective interventions that can prevent substance use among immigrant youth. Such interventions ought to be culturally sensitive, family-based, and targeted at the specific substances that are prevalent in a given context. Identifying and curating interventions that can empower parents in addressing substance use can help mitigate the risks that immigrant youth may face. Methods: This scoping review aimed to identify the types, characteristics, and effectiveness of family-based substance use intervention programs. Based on Arksay and O'Malley's guidelines, interventions included in the review must have met the following criteria: (a) was a family-based intervention aiming to prevent substance use; (b) targeted immigrant teens aged 12 to 17 years old; (c) was published in English; (d) originated from Australia, Canada, New Zealand, or the United States. The pinch table was used to synthesize included articles, after which studies were compared and categorized, and cross-cutting categories were identified. Results: After screening 4551 searched literature, 13 studies that utilized family-based interventions were included in the review. All interventions were face-to-face programs, and most interventions involved parents and youth as participants. Eco-developmental theory and active learning strategies were used by multiple interventions. Given immigrant families were target stakeholders, both deep structure and surface structure cultural adaptations were utilized. Interventions increased parents' knowledge and skills regarding substance use prevention and delayed substance use initiation among youth. Conclusion: From the review, it was evident that parents are an essential element in any program aiming to prevent or reduce children's substance use. Besides information about substance use prevention, the curriculum also involves parenting and communication skills for parents to understand the protective effects of family. Effective family-based interventions for immigrant youth require attention to parenting and immigration stress, while also considering cultural adaptation. Future directions and limitations are also discussed.

The Effectiveness of Universal Educational Interventions for Prevention of Illicit Drug Use among University Students: A Systematic Review.

Background: The extent of illicit drug use among university students necessitates effective preventive programs. To identify and assess the effectiveness of university-based interventions in preventing or reducing illicit drug use. Methods: The MEDLINE (PubMed), SCOPUS, ISI (Web of Science), and other sources were searched according to the Cochrane Collaboration method. RCTs, CRTs and non- RCTs evaluating university-based interventions designed to prevent illicit drug use were reviewed. Data were extracted independently by two reviewers. The quality of the publications was assessed. Interventions were classified by type, provider, duration, and theoretical background. Results: Of 6652 papers, 11 studies met the eligibility criteria that were conducted between 1987 and 2020. The effectiveness of interventions was different. Substantial heterogeneity among the studies prevented the integration of results for estimating summaries. Conclusion: Despite the importance of the subject, there is a paucity of studies about specific educational programs for illicit drug use, indicating the necessity of further research in other countries.

Characterizing people who inject drugs with no history of opioid agonist therapy uptake in Iran: Results from a national bio-behavioural surveillance survey in 2020.

Injection drug use is the primary driver of the human immunodeficiency virus HIV epidemic in Iran. We characterized people who inject drugs (PWID) living in Iran who had never received opioid agonist therapy (OAT) and examined barriers to OAT uptake. We recruited 2,684 PWID with a history of drug injection in the previous 12 months using a respondent-driven sampling approach from 11 geographically dispersed cities in Iran. The primary outcome was no lifetime uptake history of OAT medications. The lifetime prevalence of no history of OAT uptake among PWID was 31.3%, with significant heterogeneities across different cities. In the multivariable analysis, younger age, high school education or above, no prior incarceration history, and shorter length of injecting career was significantly and positively associated with no history of OAT uptake. Individual-level barriers, financial barriers, and system-level barriers were the main barriers to receiving OAT. PWID continue to face preventable barriers to accessing OAT, which calls for revisiting the OAT provision in Iran.

HIV Continuum of Care Among People Who Inject Drugs in Iran: A Cross-sectional Study.

ABSTRACT: People living with HIV who inject drugs may have lower access to treatment services. We aimed to assess the HIV continuum of care among people who inject drugs (PWID) in Iran. Data were collected from 2,663 PWID who were recruited via respondent-driven sampling from 11 cities of Iran between June 2019 and March 2020. Participants who tested positive for HIV infection were asked questions to calculate the status of HIV cascade of care. Of 95 PWID living with HIV, 67% were aware of their HIV status, 57% were linked to care service and initiated ART, 49% retained on ART, and only 15% had viral load less than 1,000 copies/ml. About half of the PWID diagnosed with HIV ever started ART and less than one in six were virally suppressed. Strategies to improve linkage to ART programs and ART retention may improve HIV care outcomes among PWID in Iran.

Process and Outcome of Community Engagement Event on Substance Use and Addiction Risks Facing Their Immigrant Communities in Regina, Saskatchewan.

Canada is a significant destination for immigrants who are drawn from different ethnic and cultural backgrounds some of whom have a hidden risk for substance use disorders due to acculturation stress and are not screened for risks of substance use or addiction when considering medical admissibility. Not surprisingly, healthcare providers in Regina are reporting a noticeable increase in substance use among immigrants. These immigrants experience barriers in seeking substance use prevention and treatment services due to diverse challenges: stigma, shame, and lack of knowledge of existing services. Considering the discussed challenges and risks of substance use disorders in immigrant communities, creating a safe space for discussing these topics is urgent. To understand and address these challenges, a connection grant from the Saskatchewan Health Research Foundation (SHRF) to mobilize immigrant communities in Regina to explore substance use issues and their impact on the community was sought and received. Subsequently, a Zoom knowledge-sharing event brought settlement agency stakeholders together to deliberate issues on substance use and addiction faced by immigrants in Regina, Saskatchewan. The Zoom session included presentations on immigrants and substance use from the clinical, community, and lived experience perspectives of immigrants. Because of the challenges and risks, this community consultation process revealed that acculturation stress and the ease of obtaining socially acceptable substances fuel substance use and addiction among immigrants in Regina; this is further exacerbated by the lack of programming available to prevent and reduce the risks of substance use in this population. A team of knowledge keepers with lived experiences, service providers, and researchers was assembled to explore substance use and addiction among immigrants. This manuscript reports the process of community engagement to identify solutions to this budding issue. The strengths, challenges, and lessons learned are identified.

Correlates of quality of life and mental health among youth experiencing homelessness in Iran.

BACKGROUND: Quality of life (QOL) and mental health among marginalized populations, including people experiencing homelessness in Iran, are understudied. We assessed the QOL and mental health status as well as their associated factors among youth experiencing homelessness in Kerman, Iran. METHOD: We recruited 202 participants using a convenience sampling method from 11 locations, including six homeless shelters, three street outreach sites, and two drop-in service centers, from September to December 2017. Data were collected using a standardized questionnaire that included QOL, mental health, demographics, drug use, and sexual behaviors questions. Scores in each domain were indexed with a weight of 0-100. The higher score indicated a higher QOL and mental health status. Bivariable and multivariable linear regression models were performed to examine correlates of QOL and mental health. RESULT: The mean (SD) score of QOL and mental health were 73.1 (25.8) and 65.1 (22.3), respectively. Multivariable analysis showed that youth experiencing homelessness who were aged 25-29 years old (ß = -5.4; 95% CI: -10.51; -0.30), and lived on the streets (ß = -12.1; 95% CI: -18.19; -6.07) had a lower mental health score. Moreover, those who had higher education (ß = 5.4; 95% CI: 0.58; 10.38), had no history of carrying weapons (ß = 12.8; 95% CI: 6.86; 18.76), and had a higher QOL score (ß = 0.41; 95% CI: 0.31; 0.50) had a higher mental health score. CONCLUSION: This study highlights that QOL and mental health among youth experiencing homelessness in Iran are concerning, particularly among those who were older, were less educated, were living on the street, and had a history of carrying a weapon. Community-based programs, including mental health care and affordable housing are needed to improve QOL and mental health among this population in Iran.

Hepatitis C virus prevalence, determinants, and cascade of care among people who inject drugs in Iran.

BACKGROUND: People who inject drugs (PWID) continue to experience the highest burden of hepatitis C virus (HCV). We aimed to characterize HCV antibody prevalence, determinants of infection, and the cascade of engagement in HCV care among PWID in Iran. METHODS: Participants were recruited in 11 cities of Iran using respondent-driven sampling. PWID underwent a structured interview capturing measures on socio-demographics, behaviors, and the HCV cascade of care. HCV and HIV were tested using antibody rapid tests. Multivariable logistic regression models identified characteristics associated with HCV seropositivity. RESULTS: HCV antibody prevalence was 26.0% among 2684 PWID enrolled. Of 699 participants who were HCV antibody positive, 88 (12.6%) were aware of past infections. HCV antibody prevalence was associated with older age (adjusted odds ratio [aOR] 2.09; 95% CI 1.18, 3.71), lower education (aOR 1.31; 95% CI 1.02, 1.69), >10 years of injecting (aOR 6.03; 95% CI 4.10, 8.85), methamphetamine injection (aOR 1.46; 95% CI 1.07, 1.99), daily injection drug use (aOR 1.26; 95% CI 1.01, 1.58), needle/syringe sharing (aOR 2.04; 95% CI 1.24, 3.34), recent incarceration (aOR 1.74; 95% CI 1.30, 2.32), and HIV seropositivity (aOR 7.93; 95% CI 4.12, 15.24). Additionally, 12.0% had ever tested for HCV, 4.0% had previously tested reactive for HCV antibody, and 3.7% had received an HCV diagnosis. Of diagnosed cases, 44.4% were linked to care, 15.2% initiated treatment, and 3.0% achieved sustained virologic response. CONCLUSION: Our data show a high prevalence of HCV antibody and low engagement in HCV care, underscoring an unmet need for HCV prevention, screening, and treatment among PWID in Iran. HCV prevention and treatment programs tailored for PWID are needed to enhance harm reduction efforts and access to HCV care in Iran.

Dermatoparasitoses in Referral Patients to the Laboratory.

Background: Dermatoparasitic infestations due to the mites Demodex spp. and Sarcoptes scabie are prevalent dermatological disorders worldwide. Methods: Referral patients from the Departments of Dermatology, Infectious Diseases, and from the psychologists, in some cases, to the laboratory of Medical Helminthology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran were examined and documented for demodicosis and scabies from March 2009 to December 2020. All patients' data were collected and then analyzed statistically by SDATA version 14, using the Chi-square test. Results: Out of 494-suspected patients suffering from dermal disorders, 99 patients (20.04%) and 20 cases (4.04%) were found infested with demodicosis and scabies, respectively. Most demodicosis cases belonged to the 46-60 year age group while the infestation rate of scabies was higher in the age group under 5 years (P=<0.0001). Demodicosis was seen more prevalent in women than men, and scabies were higher in men (P =0.15). The cases of demodicosis in fall and scabies in winter and spring were more frequent. Demodicosis picked up in 2015 and 2017 (P=0.03), while the prevalent year for scabies was in 2016 (P=0.77). Both current ectoparasites declined dramatically by Covid-19 pandemic. Conclusion: Demodicosis and scabies have been found correlated with age, and no statistical association was seen between the gender and seasonal factors. Besides, the obvious decline of demodicosis and scabies infestation rates during the Covid-19 outbreak can mention that social distance and hygiene standards have negative effects on dermatoparasites transmission.

Public injecting and its association with mental health and other drug-related outcomes among people who inject drugs in Iran.

BACKGROUND: Injecting in public places may increase the risk of drug and health-related harms among people who inject drugs (PWID). We examined the prevalence of public injecting and associations with non-fatal overdose, needle/syringe sharing, sexual health, and mental health among PWID in Iran. METHODS: Using respondent-driven sampling, we recruited 2684 PWID from 11 major cities between July 2019 and March 2020. We defined public injecting as injecting primarily in public places, such as streets, parks, or abandoned buildings. Multivariable logistic regression models assessed public injecting and its associated factors, as well as the association of public injecting with certain health outcomes. RESULTS: Of 2388 respondents, 69.6 % reported public injecting in the previous year. Self-identifying as men (adjusted odds ratio [aOR] = 4.21; 95 % confidence intervals [95 % CI]: 2.31, 7.65), homelessness (aOR = 6.81; 95 % CI: 5.10, 9.10), high injection frequency (aOR = 1.58; 95 % CI: 1.03, 2.44), and free needle/syringe uptake (aOR = 1.47; 95 % CI: 1.04, 2.07) were significantly associated with public injecting. Compared to PWID who primarily inject in non-public places, PWID who mostly used public places had significantly greater odds of reporting non-fatal overdose (aOR = 2.02; 95 % CI: 1.01, 4.02), needle/syringe sharing (aOR = 1.77; 95 % CI: 1.08, 2.90), unsafe sexual practices with casual sexual partners (aOR = 2.16; 95 % CI: 1.03, 4.55), suicidal ideation (aOR = 1.50; 95 % CI: 1.02, 2.21), and self-harm (aOR = 1.78; 95 % CI: 1.24, 2.54) in the last three months. CONCLUSION: These results suggest the potential utility of a safer injecting environment to mitigate the multiple harms associated with public injecting in Iran. Optimizing health and well-being of PWID necessitates integrating supervised injection facilities into the current harm reduction programs and services in Iran. Future studies should also consider the experiences of additional mental health harms associated with public injecting when exploring adverse health outcomes among PWID.

An on-site community-based model for hepatitis C screening, diagnosis, and treatment among people who inject drugs in Kerman, Iran: The Rostam study.

BACKGROUND: People who inject drugs (PWID) are at high risk for hepatitis C virus (HCV) infection and its complications in many countries, including Iran. This pilot study aimed to evaluate the effect of a community-based HCV model of care on HCV testing and treatment initiation among PWID in Kerman, Iran. METHODS: This study is part of the Rostam study and is a non-randomized trial evaluating the effect of on-site HCV- antibody rapid testing, venipuncture for HCV RNA testing, and treatment eligibility assessment on HCV testing and treatment initiation among PWID. Recruitment, interviews, and HCV screening, diagnosis, and treatment were all conducted at a community-based drop-in center (DIC) serving PWID clients. RESULTS: A total of 171 PWID (median age of 39 years and 89.5% male) were recruited between July 2018 and May 2019. Of 62 individuals who were HCV antibody positive, 47 (75.8%) were HCV RNA positive. Of RNA-positive individuals, 36 (76.6%) returned for treatment eligibility assessment. Of all the 36 participants eligible for treatment, 34 (94.4%) initiated HCV antiviral therapy. A sustained virologic response at 12 weeks post-treatment was 76.5% (26/34) in the intention-to-treat (ITT group) analysis and 100% (23/23) in the per-protocol (PP group) analysis. CONCLUSION: Our integrated on-site community-based HCV care model within a DIC setting suggested that HCV care including HCV testing and treatment uptake can be successfully delivered outside of hospitals or specialized clinics; a model which is more likely to reach PWID and can provide significant progress towards HCV elimination among this population.

Proportion and reasons for loss to follow-up in a cohort study of people who inject drugs to measure HIV and HCV incidence in Kerman, Iran.

BACKGROUND: Understanding the reasons for loss to follow-up (LTFU) in cohort studies, especially among marginalized groups such as people who inject drugs (PWID), is needed to strengthen the rigor of efficacy trials for prevention and treatment interventions. We assessed the proportion and reasons for loss to follow-up in a recent cohort of PWID enrolled in the southeast of Iran. METHODS: Using respondent-driven sampling, we recruited 98 PWID age 18 years or older who reported injecting drugs in the past 6 months, and were negative for HIV and HCV at initial screening. Participants were followed at 6 week intervals, alternating a short six-week visit and long 12-week or quarterly visit to measure incidence of HIV and HCV. Methods to enhance retention included incentives for completing each visit, tracking people who missed the scheduled visits through their peer referral networks, engaged outreach teams to explore hotspots and residences, and photos. LTFU was defined as participants who missed their quarterly visits for two or more weeks. RESULTS: Mean (SD) age of participants was 39.7 years (SD 9.6). Of 98 enrolled, 50 participants (51.0%) were LTFU by missed their scheduled quarterly visits for 2 weeks or more. For those whose reasons for LTFU could be defined (46.0%, 23 of 50), main reasons were: forgetting the date of visit (43.5%, 10 of 23), being incarcerated (39.1%, 9 of 23), and moving out of the city (17.4%, 4 of 23). CONCLUSION: This study highlighted the difficulty in retaining PWID in longitudinal studies. Despite having several retention strategies in place, over half of PWID were LTFU. The LTFU might be reduced by setting up more effective reminder systems, working closely with security systems, and online means to reach those who move outside the study area.

Gut Microbiota and Serum Biomarker Analyses in Obese Patients Diagnosed with Diabetes and Hypothyroid Disorder.

Background: Variations of serum biomarkers and bacterial diversity of the gastrointestinal tract in obese patients with diabetes or hypothyroid are poorly understood. The aim of this study was to provide recent findings in this regard. Methods: A total of 119 obese patients [17 with diabetes, 23 with hypothyroid, and 79 patients without either diabetes or hypothyroid (control)] were recruited in this study. Serum biomarkers such as biochemical, hormonal (insulin and glucagon), and cytokine levels [interleukin (IL)-6, IL-1ß, tumor necrosis factor-alpha, IL-10, and transforming growth factor beta-1 (TGF-ß1)] were measured under fasting conditions. Bacterial abundance of gut microbiota was also quantitated by real-time polymerase chain reaction using 16S rRNA gene-based specific primers. Results: Average value of blood sugar (P: 0.0184), hemoglobin A1c, insulin, homeostasis model assessment insulin resistance, TGF-ß 1, IL-6, IL-1ß, interferon gamma (Pfor each < 0.001), and phylum Actinobacteria [odds ratio (OR): 1.5, P: 0.032] was significantly higher in diabetic versus control group. In contrast, the levels of IL-10 (P < 0.001), Firmicutes (OR: 0.6, P: 0.058), and Akkermansia muciniphila (OR: 0.4, P: 0.053) were significantly lower in diabetic versus control group. However, there was no statistically significant difference between the values in hypothyroid versus control group either in crude or adjusted models. Conclusion: While there are some relationships between serum biomarkers or bacterial abundance with diabetes prediction in obese patients, this prognostication is less likely in obese patients with hypothyroid. Further investigation is warranted in the application of identified preclinical biomarkers in the diagnosis of diabetes or hypothyroid in obese patients.

Barriers and motivators to participation and retention in HIV/HCV cohort studies among people who inject drugs: a community consultation in Iran.

BACKGROUND: The lack of robust estimates of HIV/HCV incidence among people who inject drugs (PWID) in Iran calls for well-designed prospective cohort studies. Successful recruitment and follow-up of PWID in cohort studies may require formative assessment of barriers PWID are faced with in participation and retention in cohort studies and factors they think may facilitate their engagement in such studies. Using a focus group discussion (FGD) format, we conducted a consultation with PWID in southeast Iran to recognize those barriers and motivators. METHODS: Using targeted sampling and through snowball referrals, we recruited PWID (aged≥18, injected in last 6 months) from community-based drop-in centers (DICs), homeless shelters, and through outreach efforts to participate in four FGDs (one women-only). Socio-demographic characteristics, injection behaviors and self-reported HCV/HIV testing and diagnosis history were obtained. Then, a semi-structured FGD guide was applied to explore barriers and motivators to participation and retention in cohort studies among study participants. All FGD sessions were recorded and transcribed verbatim, removing any identifying information. The content of FGDs were analyzed by thematic analysis using an inductive approach. RESULTS: In total, 30 individuals (10 women) participated in the study. The median age of participants was 35 (IQR 31-40), with majority (73.3%) reporting injecting drug use within the last month. Only 40.0% reported ever being tested for HCV whereas a larger proportion (63.4%) reported ever being tested for HIV. While the majority were willing to participate in cohort studies, breach of confidentiality, fear of positive test results, perceived required commitment, and marginalization were reported as barriers to participation and retention in such studies. Monetary incentive, the thought of a better life, protection from police interventions and trust between health workers and PWID were addressed as motivators of engagement in cohort studies among PWID. CONCLUSIONS: Strategies to enhance data security and reduce stigma associated with injecting drug use along with involving peer workers in research, providing pre and post-test counselling and education and addressing the needs of more marginalized groups potentially through integrated healthcare programs and housing support are among few approaches that may help address barriers and strengthen the motivators for successful cohort studies among this population.

Correlates of Alcohol Consumption and Drug Injection among Homeless Youth: A Case Study in the Southeast of Iran.

BACKGROUND: Alcohol use and drug injection are prevalent among homeless youths. The aim of this study was to identify the associated factors of alcohol consumption and drug injection among homeless youths aged 18-29 years. METHODS: Data on 202 homeless youths (111 males and 91 females) were collected using a standardized questionnaire and face-to-face interview. Lasso logistic regression was applied to determine the impact of associated factors on alcohol consumption and drug injection. FINDINGS: The mean age of the participants was 26.30 ± 3.19 years. Also, the prevalence of alcohol consumption and drug injection was 33.0% [95% confidence interval (CI): 30-36] and 4.0% (95% CI: 0-8), respectively; 6 people (3.0%) consumed alcohol and injected drugs at the same time. Correlates of alcohol consumption and drug injection were male sex [odds ratio (OR)Alc = 5.7], age (ORAlc = 0.96 and ORDI = 0.98), bachelor or higher education level (ORAlc = 1.34), non-Iranian nationality (ORAlc = 0.05 and ORDI = 0.18), food score (ORDI = 0.92), smoking (ORAlc = 2.05), substance use (ORAlc = 1.12), opposite sex relationship (ORAlc = 1.6), homosexual relationship (ORAlc = 3.56 and ORDI = 2.69), and mental disorder (ORAlc = 0.99). CONCLUSION: Based on our findings, it seems that the homeless youth are more desired to use alcohol and drug injection, whereas the prevalence of alcohol consumption and drug injection in homeless youth was higher than general youth population in Iran. Therefore, some suitable solutions are needed to prevent the homelessness. Also, the effective variables that were identified in this study for alcohol use and drug injection can help design and implement beneficial interventions.