Effectiveness evaluation of the school-based drug prevention program #Tamojunto in Brazil: 21-month follow-up of a randomized controlled trial

Integrated Theory-Based Health and Development Interventions for Young People: A Global Scoping Review

BACKGROUND

Most health and developmental issues affecting young people are interrelated. However, few interventions address multiple behavioral domains simultaneously or are based on theories that encompass a holistic perspective of youth development.

AIM

The purpose of this scoping review was to identify and describe the range of theory-based, multibehavioral health interventions aimed at improving two or more of the following behavioral youth outcomes: (1) sexual and reproductive health; (2) education and employment; (3) violence; and (4) substance use.

METHODS

Interventions conducted worldwide and published in English or Spanish between January 2000 and July 2020 were identified using four databases: PubMed, PsycINFO, LILACS, and SciELO.

RESULTS

A total of 11,084 articles were identified, of which 477 were retrieved and assessed for eligibility. Twenty-three articles (evaluating 21 interventions) ultimately met the inclusion criteria. Most interventions were conducted in the United States and addressed two behavioral domains of interest, although seven interventions incorporated three domains, and one incorporated all four. Substance use was the most common domain (16 interventions) but only in the United States/Canada, followed by sexual and reproductive health (14 interventions). All produced significant improvement in at least one outcome or for at least one subgroup of youth. The most common theoretical foundations were positive youth development and social learning theory.

CONCLUSION

Integrated interventions that are theory based and evidence informed can support positive development and empower youth to make healthy decisions. Further efforts are needed to address structural and policy issues that affect young people's developmental opportunities and health outcomes.

Keepin' It REAL-Mantente REAL in Mexico: Longitudinal Examination of Youth Drug Resistance Strategies and Substance Use Among Early Adolescents

PURPOSE

This study examined if culturally and linguistically adapted versions of a US-developed adolescent substance use prevention intervention, keepin' it REAL (kiREAL), for Mexico increases the use of drug resistance strategies and if increased use of resistance strategies subsequently leads to a reduction in the frequency of substance use (i.e., alcohol, cigarette, marijuana, and inhalants).

METHODS

Students (N = 5,522, 49% female, age range = 11-17) in 36 middle schools across three cities in Mexico were randomized into three conditions: (1) Mantente REAL (MREAL), the culturally adapted version, (2) kiREAL-S, the linguistically adapted version, and (3) Control. Using survey data collected at four time points, random intercept cross-lagged path analyses tested the direct and indirect effects of MREAL and kiREAL-S compared to Control.

RESULTS

At time 2, the number of drug resistance strategies used by students increased in both MREAL (β = 0.103, p = .001) and kiREAL-S (β = 0.064, p = .002) compared to Control. However, only MREAL lead to less frequent use of alcohol (β = -0.001, p = .038), cigarettes (β = -0.001, p = .019), marijuana (β = -0.002, p = .030), and inhalants (β = -0.001, p = .021) at time 4, mediated through increased use of drug resistance strategies.

DISCUSSION

This study provides evidence that MREAL and kiREAL-S are successful in spurring use of the drug resistance strategies that are the core component of the intervention. Only MREAL achieved long-term effects on substance use behaviors, the ultimate objective of these interventions. These findings provide support for the value and importance of rigorous cultural adaptation of efficacious prevention programs as a necessary condition for enhancing prevention benefits for participating youth.

The Indirect Effect of #Tamojunto2.0 Program on Bullying Through Reduction of Alcohol Use Initiation

PURPOSE

The Brazilian version of the prevention program Unplugged, #Tamojunto, has had a positive effect on bullying prevention. However, the curriculum has recently been revised, owing to its negative effects on alcohol outcomes. This study evaluated the effect of the new version, #Tamojunto2.0, on bullying. For adolescents exposed to the school-based program #Tamojunto2.0, we investigated (1) whether the prevalence of bullying victimization and perpetration was reduced, (2) whether this reduction was moderated by gender, and (3) whether the program's effect on bullying was mediated by adolescents' alcohol use.

METHODS

A cluster randomized controlled trial was conducted using 5,208 eighth-grade students from 73 Brazilian public schools. Baseline data were collected before program implementation, and follow-up data were collected nine months later. We used a multilevel mixed-effects model to examine the effect of #Tamojunto2.0 on bullying, and a moderation model to test the moderating effect of gender on program outcomes. A mediation analysis was performed to determine lifetime alcohol use as a mediator of the intervention effect on bullying.

RESULTS

We found that the positive effect of #Tamojunto2.0 on bullying victimization (β = -0.019, 95% confidence interval = -0.035; -0.002) and perpetration (β = -0.027, 95% confidence interval = -0.051; -0.004) was mediated by a decrease in alcohol use, but not moderated by gender.

DISCUSSION

#Tamojunto2.0 program can be indirectly effective in the prevention of bullying by decreasing adolescents' alcohol use. Moreover, alcohol and drug use prevention programs might also affect bullying outcomes through mediation, and we suggest that future studies consider this.

Changes in alcohol beliefs mediate the effects of a school-based prevention program on alcohol use among Brazilian adolescents

OBJECTIVE

To investigate the mechanisms of the #Tamojunto2.0 program that mediated the prevention of lifetime alcohol and drug use, including drug knowledge, behavioral beliefs, attitudes, decision-making skills, and refusal skills.

METHODS

A cluster-randomized controlled trial was conducted in 73 public middle schools in three Brazilian cities. The sample included 5208 students (49.4 % girls; M_age = 13.2 years). The intervention group attended twelve #Tamojunto2.0 lessons conducted by their previously trained teachers. The control group did not receive any intervention. Data were collected pre-intervention and at the 9-months follow-up. We performed multiple mediation models (for the whole sample, users, and non-users) with a post-estimation adjustment to standard errors to account for nesting. We analyzed all available mediators simultaneously according to each drug: alcohol, binge drinking, tobacco, marijuana, and inhalant lifetime use. To handle missing data, we used the "full-information maximum-likelihood" paradigm.

RESULTS

Outcomes in the whole sample and among non-users showed that #Tamojunto2.0 indirectly prevented lifetime alcohol use and binge drinking by increasing negative and non-positive alcohol beliefs. Only the direct effect on decreasing lifetime alcohol consumption was statistically significant. However, an indirect increase in binge drinking was observed through knowledge about alcohol, but the direct effect was not statistically significant. No effects were reported for marijuana, tobacco, or inhalants. Among users, no statistically significant effects were found for alcohol or drug use.

CONCLUSIONS

The results suggest that the #Tamojunto2.0 program was only effective in delaying alcohol consumption via increasing negative and non-positive alcohol beliefs. It seems that mediating mechanisms vary depending on contextual characteristics, differences in socializing among adolescents, features of the educational systems, psychosocial conditions, or, fidelity issues of program implementation.

Cannabis use, risk behaviours and harms in Brazil: A comprehensive review of available data indicators

ISSUES

Cannabis use and related health/social outcome indicator data for Brazil-where non-medical cannabis is generally illegal-are limited.

APPROACH

Towards a comprehensive overview of relevant indicators, we searched primary databases by combining MeSH-index terms related to cannabis, geographic location and subtopic terms (e.g., use, health, mortality) focusing on cannabis use and key outcome indicators in Brazil since 2010. In addition, relevant 'grey literature' (e.g., survey reports) was identified. Key indicator data were mainly narratively summarised.

KEY FINDINGS

Overall, cannabis use has increased somewhat since pre-2010, with (past-year) use rates measured at 2-3% for general population adults, yet 5% or higher among youth and/or (e.g., post-secondary) student populations. For key risk behaviours, the presence of tetrahydrocannabinol-positivity among motor-vehicle drivers has been measured at <2%. While the prevalence of cannabis use disorder appears to have decreased, the relative proportion of treatment provided for cannabis-related problems increased. National- and local-based studies indicated an association of cannabis use with mental health harms, including depression and suicidality. Although some non-representative and/or local studies contain information, other monitoring data, including cannabis-related risks and harms (e.g., cannabis-related driving, mortality, hospitalisations), are limited in availability.

IMPLICATIONS AND CONCLUSION

The prevalence of cannabis use in Brazil is comparably low (e.g., relative to elsewhere in the Americas). Data on numerous key cannabis-related indicators is absent, or limited in scope for Brazil. Considering ongoing evolutions in cannabis control and its status as the most common illicit drug, more comprehensive surveillance of cannabis use and related outcomes is advised.

Effectiveness of D.A.R.E/Keepin' it REAL bullying prevention program among Brazilian students

INTRODUCTION

Given the growing scientific evidence on the detrimental effects of bullying, several prevention programs have been implemented internationally to prevent this behavior among students. Brazil's Educational Program for Drug and Violence Resistance (PROERD) is an adaptation of US' DARE/Keepin' it REAL program, being the most widespread school-based prevention program in the country. However, it has been offered without any effectiveness evaluation. As such, this study evaluates the effectiveness of PROERD in reducing bullying perpetration and victimization among students.

METHODS

Two cluster randomized controlled trials were carried out with 4030 students (1727 5th graders and 2303 7th graders) in 30 public schools in São Paulo, Brazil. The intervention group attended 10 PROERD classes taught by trained police officers whereas the control group underwent no intervention. Data were collected by self-administered questionnaires using smartphones at two moments (baseline preintervention and 9-month follow-up). Multilevel analysis included two paradigms, complete cases (CC) and intention-to-treat (ITT), using Full Information Maximum Likelihood (FIML) and Multiple Imputation (MI). RESULTS AND CONCLUSION: Results show no statistical difference between groups, indicating lack of evidence on PROERD's effectiveness in preventing bullying behaviors. The insufficient number of classes on bullying prevention and the lack of cultural adaptation may explain these unexpected results. New in-depth evaluation studies concerning the program's components and process are needed.

Applying a Pattern-Centered Approach to Assess the Effect of a School-Based Drug Use Prevention Program in Brazil: A Cluster Randomized Controlled Trial

This study evaluated the effectiveness of a drug and violence resistance educational program (Programa Educacional de Resistência às Drogas e à Violência-PROERD) on latent substance use profiles over a 9-month follow-up period. Two PROERD curricula were evaluated through a cluster randomized controlled trials with two parts that included a total of 4030 fifth-and seventh-grade students in 30 public schools in São Paulo. The intervention groups received 10 PROERD classes delivered by trained police officers, while the control group received no intervention. The primary outcome measures were drug use (any alcohol use, binge drinking, tobacco, marijuana, and inhalants) in the past 6 months, which was assessed using a pretest and a posttest 9 months later. Latent transition analysis was employed to investigate the effect of the intervention on the probabilities associated with the transition across drug use profiles. Latent drug use profiles are underlying subgroups of individuals similar to each other regarding their pattern of polysubstance use. Two different latent drug use profiles were revealed among the fifth graders (abstainers/low users and alcohol users/binge drinkers) and three drug use profiles among the seventh graders (abstainers/low users, alcohol users/binge drinkers, and polydrug users). For both, there was no evidence of the effect of PROERD on drug transition probabilities. In conclusion, the intervention was not successful in changing transitions across adolescent drug use profiles. Thus, the failure of the intervention to affect students' substance use profiles suggests that it should be reconsidered before it is implemented further in Brazilian schools.

Prevention of Alcohol Consumption Programs for Children and Youth: A Narrative and Critical Review of Recent Publications

Background

Youth substance use is a public health problem globally, where alcohol is one of the drugs most consumed by children, and youth prevention is the best intervention for drug abuse.

Objective

Review the latest evidence of alcohol use prevention programs in empirical research, oriented to all fields of action among children and youth.

Methods

A narrative and critical review was carried out within international databases (PsychInfo, Pubmed, Web of Science, and Scopus) in August 2021 and was limited to empirical studies that appeared in the last five years (2017-2021). A flow diagram was used according to the PRISMA statements. Empirical research articles in English with RCTs and quasi-experimental design that included alcohol, children, and young people up to 19 years of age (universal, selective, or indicated programs) were included. The authors examined the results and conceptual frameworks of the Prevention programs by fields of action.

Results

Twenty-two articles were found from four fields of action: school (16), family (2), community (2), and web-based (2), representing 16 alcohol prevention programs. School-based alcohol prevention programs are clinically relevant [Theory of Planned Behavior, Refuse, Remove, Reasons, Preventure, The GOOD Life, Mantente REAL, Motivational Interviewing (BIMI), Primavera, Fresh Start, Bridges/Puentes], they are effective in increasing attitudes and intentions toward alcohol prevention behavior, while decreasing social norms and acceptance of alcohol, reducing intoxication, and increasing perceptions with regards to the negative consequences of drinking.

Discussion

This narrative and critical review provides an updated synthesis of the evidence for prevention programs in the school, family, community, and web-based fields of action, where a more significant number of programs exist that are applied within schools and for which would have greater clinical relevance. However, the prevention programs utilized in the other fields of action require further investigation.

Patient-level interventions to reduce alcohol-related harms in low- and middle-income countries: A systematic review and meta-summary

BACKGROUND

Disease and disability from alcohol use disproportionately impact people in low- and middle-income countries (LMICs). While varied interventions have been shown to reduce alcohol use in high-income countries, their efficacy in LMICs has not been assessed. This systematic review describes current published literature on patient-level alcohol interventions in LMICs and specifically describes clinical trials evaluating interventions to reduce alcohol use in LMICs.

METHODS AND FINDINGS

In accordance with PRISMA, we performed a systematic review using an electronic search strategy from January 1, 1995 to December 1, 2020. Title, abstract, as well as full-text screening and extraction were performed in duplicate. A meta-summary was performed on randomized controlled trials (RCTs) that evaluated alcohol-related outcomes. We searched the following electronic databases: PubMed, EMBASE, Scopus, Web of Science, Cochrane, WHO Global Health Library, and PsycINFO. Articles that evaluated patient-level interventions targeting alcohol use and alcohol-related harm in LMICs were eligible for inclusion. No studies were excluded based on language. After screening 5,036 articles, 117 articles fit our inclusion criteria, 75 of which were RCTs. Of these RCTs, 93% were performed in 13 middle-income countries, while 7% were from 2 low-income countries. These RCTs evaluated brief interventions (24, defined as any intervention ranging from advice to counseling, lasting less than 1 hour per session up to 4 sessions), psychotherapy or counseling (15, defined as an interaction with a counselor longer than a brief intervention or that included a psychotherapeutic component), health promotion and education (20, defined as an intervention encouraged individuals' agency of taking care of their health), or biologic treatments (19, defined as interventions where the biological function of alcohol use disorder (AUD) as the main nexus of intervention) with 3 mixing categories of intervention types. Due to high heterogeneity of intervention types, outcome measures, and follow-up times, we did not conduct meta-analysis to compare and contrast studies, but created a meta-summary of all 75 RCT studies. The most commonly evaluated intervention with the most consistent positive effect was a brief intervention; similarly, motivational interviewing (MI) techniques were most commonly utilized among the diverse array of interventions evaluated.

CONCLUSIONS

Our review demonstrated numerous patient-level interventions that have the potential to be effective in LMICs, but further research to standardize interventions, populations, and outcome measures is necessary to accurately assess their effectiveness. Brief interventions and MI techniques were the most commonly evaluated and had the most consistent positive effect on alcohol-related outcomes.

TRIAL REGISTRATION

Protocol Registry: PROSPERO CRD42017055549.

The Mediating Role of Social Support in the Relationship Between Parenting Styles and Adolescent Drug Abuse Identification

Adolescent drug abuse is a social issue of global concern, causing a serious burden of diseases for individuals, families and society. To design effective prevention and intervention strategies for adolescent drug abusers, the predictive factors associated with drug abuse must be quantified and assessed. This study explores the similarities and differences between the parenting styles of adolescent drug abusers and non-drug abusers and applies a structural equation model to analyze the mechanisms involved between parenting styles, social support and adolescent drug abuse identification. Data were derived from adolescent drug abusers (n = 363) and non-drug abusers (n = 229) between the ages of 18 and 35 in China, and the data were collected and analyzed by SPSS 26 and AMOS 24. The results show that parenting styles significantly predict adolescent drug abuse identification, and different parenting styles have different influencing mechanisms, which further indicates that poor parenting styles are a risk factor for adolescent drug abuse. Additionally, social support plays a mediating role between parenting styles and drug abuse identification (χ²/df = 4.52, CFI = 0.939, TLI = 0.914, RMSEA = 0.077, IFI = 0.939, PCFI = 0.671). The specific pathways involved are as follows: Paternal parenting style → Social support → Drug abuse identification and Maternal parenting style → Social support → Drug abuse identification. However, beyond this, the mediation model of social support shows good adaptability and stability between adolescent drug abusers and non-drug abusers. Since parenting styles and social support are important predictors of adolescent drug abuse, the importance of integrating family-social support antidrug programs into adolescent prevention and intervention strategies should be considered.

Effectiveness of a school-based substance use prevention program taught by police officers in Brazil: Two cluster randomized controlled trials of the PROERD

BACKGROUND

The Drug and Violence Resistance Educational Program (PROERD) is widely disseminated and implemented as a public policy in Brazil. PROERD's current curricula are the translation of the North American program DARE-Keepin'it REAL, based on the theories of socio-emotional learning and resistance training. The present study aims to evaluate the effectiveness of PROERD in the prevention of drug use.

METHOD

Two PROERD curricula were analyzed through two cluster randomized controlled trials conducted with 4030 students (1727 5th graders and 2303 7th graders) in 30 public schools in São Paulo. The intervention group received ten PROERD classes delivered by trained police officers, and the control group received no intervention. Data collection was performed using self-administered questionnaires on smartphones at two points in time (baseline pre-intervention and nine months follow-up). The outcomes evaluated were initiation and recent drug use. Two different paradigms were used in a multilevel analysis: an analysis of complete cases (CC) and an intention to treat missing data through full information maximum likelihood and selection model.

RESULTS

We found no evidence of the effectiveness of PROERD as an intervention for the prevention of drug use. For the conditional transition analysis, we found that 7th graders in the PROERD group who were already binge drinking at baseline had a significantly higher chance of maintaining this consumption pattern when compared to the control group.

CONCLUSION

The lack of preventive effects found here suggests that a process evaluation may address concrete implementation and cultural adaptation issues.

Effects of a School-Based Drug Prevention Program on Sexual Risk Behavior Among Adolescents in Brazilian Schools

Sexual risk behaviors are closely related to the use of alcohol, tobacco, and other illicit drugs as well as teen dating violence. School-based drug prevention programs that teach social and personal skills could potentially also reduce sexual risk behaviors. We examined the effects of the #Tamojunto program on youth sexual risk behaviors. A randomized controlled trial was conducted with 6391 7th and 8th grade students in 72 public schools in six Brazilian cities. Baseline data were collected prior to program implementation. Two waves of follow-up assessments occurred after 9 and 21 months. Analyses were performed taking into account the multilevel structure of the data. We used intention-to-treat to evaluate changes in the prevalence of sexual risk behaviors over time and between groups. Adolescent age ranged from 11 to 15 years, with a mean of 12.6 ± 0.8 years, and 51.0% were female. Among all participants, receipt of #Tamojunto was associated with higher risk of lifetime sex at 21 months follow-up (OR 1.27, 95% CI [1.03, 1.56]). Among girls, at 9 months follow-up, the program was associated with higher likelihood of having engaged in sex in the last month (OR 1.76, 95% CI [1.13, 2.74]). At 21 months follow-up, girls receiving the program were more likely to report engaging in condomless sex in the last month (OR 1.64, 95% CI [1.07, 2.50]). #Tamojunto may be ineffective and possibly harmful for preventing sexual risk behaviors, especially among girls. We suggest further investigation of the possible mediating role of life skills intervention components on girl's sexual behaviors.

Validation of a Tool to Evaluate Drug Prevention Programs Among Students

Background: School-based prevention programs have been implemented worldwide with the intention of reducing or delaying the onset of alcohol and drug use among adolescents. However, their effects need to be evaluated, being essential to use validated and reliable questionnaires for this purpose. This study aimed to verify the semantic validity and reliability of an instrument developed to evaluate the results of a government drug prevention program for schoolchildren called #Tamojunto2.0. Methods: This is a mixed methods study with quantitative (test-retest, confirmatory factor analysis and non-response evaluation) and qualitative analyses (focus group and field cards). The self-administered questionnaires were used for a sample of 262 eighth-grade students (elementary school II) in 11 classes of four public schools in the city of São Paulo. Results: The level of agreement was substantial (Kappa 0.60-0.79) or almost perfect (Kappa > 0.8) for almost all questions about the use of marijuana, alcohol, cigarettes, cocaine, crack, and binge drinking. The model fit indices, for almost all secondary outcomes, indicated that the modls underlying each scale, constituted by observed and latent variables, had a good fit adjustument. The focus groups and field cards provided high-quality information that helped the researchers identify the main difficulties in applying and understanding the questions. Conclusion: The questionnaire showed high factorial validity, reliability and understanding by adolescents. After the necessary changes, identified in this study, the questionnaire will be suitable to evaluate the results of the #Tamojunto2.0 program in a randomized controlled trial.

A cluster randomized controlled trial evaluating the effectiveness of the school-based drug prevention program #Tamojunto2.0

AIMS

The study aimed to evaluate the effectiveness of the government school-based program #Tamojunto2.0, the third Brazilian version of the European drug prevention program, Unplugged, in preventing the use of alcohol and other drugs.

DESIGN

A parallel, two-arm cluster randomized controlled trial was conducted in 205 classes in 73 public schools (37 intervention and 36 control) with a baseline assessment and follow-up after 9 months.

SETTING

Schools in the cities of São Paulo, Fortaleza and Eusebio in Brazil.

PARTICIPANTS

A total of 5208 students in the 8th grade with a mean age of 13.2 years (standard deviation = 0.8 years) and an equal gender ratio.

INTERVENTION

In 2019, the intervention group attended 12 classes of the program #Tamojunto2.0, under the supervision of a team from the Ministry of Health. The control group did not receive any intervention to prevent alcohol and drug use.

MEASUREMENTS

The primary outcome measured was prevalence of binge drinking (five or more doses of alcohol in an occasion) within the past month. Secondary outcomes were prevalence of initiation and use of alcohol, tobacco, inhalants, marijuana and cocaine within the past month.

FINDINGS

A statistically significant difference was not found in the prevalence of binge drinking within the past month between intervention and control groups [odds ratio (OR) = 0.934; 95% confidence interval (CI) = 0.761-1.146]. However, students who were exposed to the program were less likely to initiate alcohol use than those in the control group (OR = 0.782; 95% CI = 0.636-0.961). The Bayes factor for reduction in binge drinking was 0.01, providing evidence in favor of the null hypothesis for this variable.

CONCLUSIONS

The drug prevention program #Tamojunto 2.0 reduced alcohol initiation, but appeared not to reduce past-month binge drinking among 8th grade students in Brazil.

Icelandic Prevention Model for Rural Youth: A Feasibility Study in Central Appalachia

The purpose of this study was to assess the feasibility of implementing the Icelandic model for Primary Substance Use Prevention (IPM) in rural Central Appalachia. Guided by the IPM's theoretical framework, 26 stakeholders from a single county in West Virginia were purposefully recruited during the spring of 2019 and divided into four focus groups. Interviews were recorded and transcribed verbatim and analyzed into themes based on IPM premises. Focus group material produced seven themes: Drug use overall, Drug treatment and other service needs, Poverty, Parenting/Caregiver practices, Transportation, Downtime/Leisure time activities, and Opportunities for solutions. General support was found for the potential of the IPM in the region. Preferably, the implementation of the model should coincide with attention to the adult population as drug use was reported to be plaguing the whole community. Treatment options were few and mostly far away. General poverty and lack of public transportation further stifled progress and potential for change. Organized leisure time activities and programs for youth were scarce and mostly seasonal. Suggested solutions for the adult community included workforce and skill training, coupled with increased opportunities for organized leisure activities for youth, and access to healthy role models via schools and faith-based organizations. We conclude that implementation of the IPM would be feasible to prevent substance use initiation and progression among youth in the rural Central Appalachia. We present several specific recommendations for policy and practice that address factors unique to this environment to initiate the IPM implementation development and suggest initial model application strategies.

Direct healthcare costs and their relationships with age at start of drug use and current pattern of use: a cross-sectional study

BACKGROUND

It is well known that early start of drug use can lead users to psychosocial problems in adulthood, but its relationship with users' direct healthcare costs has not been well established.

OBJECTIVES

To estimate the direct healthcare costs of drug dependency treated at a community mental health service, and to ascertain whether early start of drug use and current drug use pattern may exert influences on these costs.

DESIGN AND SETTING

Retrospective cross-sectional study conducted at a community mental health service in a municipality in the state of São Paulo, Brazil.

METHODS

The relationships between direct healthcare costs from the perspective of the public healthcare system, age at start of drug use and drug use pattern were investigated in a sample of 105 individuals. A gamma-distribution generalized linear model was used to identify the cost drivers of direct costs.

RESULTS

The mean monthly direct healthcare costs per capita for early-start drug users in 2020 were 1,181.31 Brazilian reais (BRL) (274.72 United State dollars (USD) according to purchasing power parity (PPP)) and 1,355.78 BRL (315.29 USD PPP) for late-start users. Early start of drug use predicted greater severity of cannabis use and use of multiple drugs. The highest direct costs were due to drug dependence combined with alcohol abuse, and due to late start of drug use.

CONCLUSIONS

Preventive measures should be prioritized in public policies, in terms of strengthening protective factors before an early start of drug use.

Barriers and Facilitators in the Strengthening Families Program (SFP 10-14) Implementation Process in Northeast Brazil: A Retrospective Qualitative Study

This study analyzed contextual barriers and facilitators in the implementation of Strengthening Families Program (SFP 10–14), Brazilian version, a family-based preventive program focused on the prevention of risk behaviors for adolescent health. SFP 10–14 was implemented between 2016 and 2017 for socioeconomically vulnerable families in four Northeast Brazilian states as a tool of the National Drug Policy. A retrospective qualitative study was carried out in which 26 implementation agents participated. Data from 16 individual interviews and two group interviews were analyzed through content analysis. The most recurrent barriers were the group facilitators’ working conditions, weak municipal administration, precarious infrastructure, inadequate group facilitator training methodologies, low adherence of managers and professionals, and funding scarcity. The conditions highlighted as favorable to the implementation were proper intersectoral coordination, engagement of involved actors, awareness of public agency administrators, municipal management efficacy, and efficient family recruitment strategies. Favorable political contexts, engagement of implementation agents, and intersectoral implementation strategies were identified as central to the success of the implementation of SFP 10–14, especially in the adoption of the intervention, community mobilization, and intervention delivery stages. Further studies should combine contexts, mechanisms, and results for a broad understanding of the effectiveness of this intervention in the public sector.

Evaluating the effects of parenting styles dimensions on adolescent drug use: secondary analysis of #Tamojunto randomized controlled trial

The present study examined parenting style dimensions (demandingness and responsiveness) as predictors of adolescent drug use and also evaluated whether parenting styles dimensions moderate the effects of the implemented prevention program. 6.391 students in the 7th and 8th grades at 72 Brazilian public schools participated in a three-wave randomized controlled trial to evaluate a school drug-use prevention program. We used structural equation modeling to test if baseline parenting style dimensions (demandingness and responsiveness) would predict the use of drugs (alcohol, binge drinking, cannabis, inhalants, and tobacco) after 21 months. Additionally, we evaluated an interaction version of the above-described model to test if the effect of the prevention program would be moderated by either or both parenting style dimensions. Higher levels of parent demandingness predicted lower chances of adolescent drug use (e.g., Cigarette use OR 0.76, 95% CI 0.64-0.89); responsiveness on the five outcomes showed p value superior to 0.01. The effect of the #Tamojunto intervention is unlikely to be conditioned to either parenting style dimensions on the assessed outcomes.Clinical trial registration Brazilian Register of Clinical Trials (REBEC): #RBR-4mnv5g ( https://www.ensaiosclinicos.gov.br/rg/?q=tamojunto ).

Transition from nonuse to use of alcohol or binge drinking among adolescents: Secondary analysis of a randomized controlled trial

OBJECTIVE

The objective of this study was to evaluate the predictors of the transition from nonuse of alcohol to the first use of alcohol and the first episode of binge drinking.

METHODS

Data were drawn from a randomized controlled trial conducted with seventh- and eighth-grade students from 72 public schools over a 21-month period in six cities in Brazil. A total of 3298 students who reported that they had never consumed alcoholic beverages and had never engaged in binge drinking at baseline were included in this study. The two binary outcomes were tested concomitantly via structural equation modeling. Maximum likelihood estimates for logistic regression models were performed to evaluate how baseline data regarding risk factors, such as sociodemographic characteristics (socioeconomic status, gender, and age), school experiences (violence and perception of academic performance), and social variables (family and friends), affected the initiation of alcohol use and binge drinking at 9- and 21-month follow-up assessments.

RESULTS

Older age, the perpetration of violent behaviors at baseline and the absence of the father living with the adolescent were predictors of both alcohol use initiation and binge drinking initiation. The #Tamojunto program showed iatrogenic effect for first alcohol use.

CONCLUSIONS

The results indicate the need to develop and implement effective alcohol prevention programs that consider the main characteristics in the prediction model for alcohol consumption and binge drinking, including early intervention for aggressive behaviors at school and parental alcohol use.

Decision-making skills as a mediator of the #Tamojunto school-based prevention program: Indirect effects for drug use and school violence of a cluster-randomized trial

BACKGROUND

The aim of the present study was to evaluate a formal mediation analysis effect of the #Tamojunto program on adolescents' drug use and violent behavior in schools through decision-making skills using a potential outcomes approach.

METHODS

An in-cluster randomized controlled trial was conducted in 2014-2015 with 6691 7th- and 8th-grade students in 72 public schools in 6 Brazilian cities to evaluate the effects of the European drug prevention program Unplugged, called #Tamojunto in Brazil. Baseline data were collected prior to program implementation, and follow-up data were collected 9 and 21 months later. Mediation analysis using a potential outcomes approach, in which counterfactuals are modeled if positivity is met, was used to evaluate the indirect effects of the program #Tamojunto on the third-wave of drug use (alcohol, tobacco, marijuana, inhalants, and binge drinking) and school violence (bullying or physical, verbal and sexual aggression) assessment through decision-making skills.

RESULTS

When controlling for all covariates, the Total Natural Indirect Effect (TNIE) was significant only for past-year drug use (TNIE = 0.003, 95%CI = 0.001; 0.007). In the adjusted models, 37.5% of the effect of the intervention on drug use was mediated by decision-making skills.

CONCLUSIONS

The #Tamojunto program increased drug use through decreasing decision-making skills. The findings demonstrate that this program changes decision-making skills but in the opposite direction proposed by the theoretical model of the program, suggesting that modifications are needed to produce the intended effect of the program.

Effectiveness evaluation of the school-based drug prevention program #Tamojunto2.0: protocol of a cluster randomized controlled trial

Background

The European school-based drug addiction prevention program Unplugged was adapted to the Brazilian context by the Ministry of Health and renamed #Tamojunto. Its first implementations, in the form of a public policy in Brazil, showed contradictory and different effects from those observed in Europe. Adaptations were made to #Tamojunto in 2018 to reintroduce the essential content of the original program.

Methods

A parallel, two-arm, randomized controlled trial (RCT) will be conducted to evaluate the effectiveness of the new version of the school-based government program #Tamojunto2.0 for the prevention of drug use among 8th grade middle school students from 70 public schools in three Brazilian cities, totaling approximately 6.300 participating students distributed in 210 classes. For intervention, the experimental group will receive the 12 lessons of the #Tamojunto2.0 program under the supervision of a Brazilian Ministry of Health team. The control group will not receive any intervention. Information will be collected from the students at three time points: preintervention and 9 and 18 months postintervention. Multilevel analyses will be performed using the Gllamm Stata program to assess simultaneous differences in prevalence, in time and among groups for the outcomes of interest. Structural equation modeling will be used to evaluate the effectiveness of the intervention in changing the behavioral patterns of the adolescents through latent transition analysis. The effect of the mediators involved in the program effectiveness outcomes will also be analyzed. The program doses applied in all classes of the intervention group will be collected using a form completed by the teacher at the end of each lesson, indicating the activities taught and not taught in each lesson.

Discussion

This study will show whether the #Tamojunto2.0 program can be expanded as a public policy for all schools with the aim of preventing drug use among Brazilian students.

Trial registration

Brazilian Clinical Trials Registry (RBR-8cnkwq) under the name “Avaliação do Efeito do Programa de Prevenção Escolar ao Uso de Drogas #Tamojunto2.0, Versão 2018”, on August 30th, 2018 (http://www.ensaiosclinicos.gov.br/rg/RBR-8cnkwq/).