Polydrug use among urban adolescent cigarette smokers

Pathway of effects of adverse childhood experiences on the poly-drug use pattern among adults using drugs: A structural equation modeling

Introduction

Adverse childhood experiences (ACEs) are associated with an increased risk of poly-substance use among drug-using adults. However, there is a paucity of literature on a direct or indirect relationship between ACEs and drug use patterns. We thus aimed to identify the pathway of effects of ACEs on drug use patterns in adults by the structural equation model (SEM).

Methods

A cross-sectional study was conducted by respondent-driving sampling and consecutive sampling among adult drug users in Southwest China in 2021. Descriptive, univariate, and SEM analyses were performed by R software 4.2.1.

Results

Of 406 participants recruited from a drug abuse clinic, the average age was 34 years. The majority of the participants were male patients (98.3%) from ethnic minorities (79.6%), who were unmarried (71.6%) and employed (81.2%). Nearly 95.5% experienced ACEs with 46.6% of them reporting four or more ACEs. The median value of self-perception of drug abuse score, friend drug use score, and drug use score was 8.0 (3.0, 11.0), 1.0 (0.0, 1.0), and 1.0 (1.0, 2.0) respectively. In the confirmatory analysis part of SEM, the construct of latent variables fitted well with the data. Poly-drug use was significantly and directly affected by three predictors including monthly incomes (β = 0.09), friend drug use (β = 0.50), and ACEs (β = 0.11). The indirect effect of ACEs passing through self-perception of drugs (β = 0.09) was not significant.

Discussion

ACEs have an independent and direct effect on the drug user for poly-drug use apart from the effect of drug-using friends and family income.

Bidirectionality of smoking and depression in adolescents: a systematic review

INTRODUCTION

Recently, evidence has been accumulating that both smoking and mental health disorders are continuously increasing among adolescents. This systematic review elucidates the research into evidence of the direction of the association and risk factors influencing the relationship between smoking and depression. We also highlight recent studies on the effects of electronic cigarettes and developments on the association between depression and smoking.

METHODS

A literature search was conducted on databases including PubMed, Ovid Medline, EMBASE, and PsycINFO and in relevant neurology and psychiatry journals. Terms used for electronic searches included smoking, tobacco, cigarettes; depression; adolescent, youth; direction. Relevant information was then utilized to synthesize findings on the association between smoking and depression among adolescent population.

RESULTS

The initial database searches yielded 2,738 related articles. After screening and cross-referencing, duplicate articles, articles published in languages other than English, and studies on animals, social and lifestyle factors, mood disorders, and substance use were excluded. Of these, a total of 122 publications only focusing on smoking and depression in the adolescent population were selected for synthesis in this qualitative systemic review. These include 110 original research articles, eight meta-analyses and reviews, and four reports and websites.

CONCLUSION

The relationship between smoking and depression in the literature does not reflect the cause-effect relationship. The lack of evidence on the direction of the association may reflect futile study designs, confounding factors and/or use of indirect measures of depression and quantification of smoking. Future prospective randomized studies should target elucidation of the causal association.

Associations between Longitudinal Patterns of Substance Use and Anxiety and Depression Symptoms among a Sample of Canadian Secondary School Students

The objective of this study is to examine the longitudinal associations between latent classes of substance use and anxiety and depression scores among youth who use substances. This study uses data from three waves (Wave 1: 2017/18, Wave 2: 2018/19, and Wave 3: 2019/20) of the COMPASS study. Students in grades 9 and 10 who reported substance use at baseline (n = 738) report their substance use (alcohol, cannabis, cigarettes, and e-cigarettes) and anxiety and depression symptoms at each wave. A Repeated Measures Latent Class Analysis (RMLCA) is used to determine substance use classes, and mixed models are used to examine the associations between substance use classes and anxiety and depression. We identify three classes of substance use: (1) occasional alcohol and e-cigarette use, (2) escalating poly-substance use, and (3) consistent poly-substance use. After controlling for relevant covariates, consistent poly-substance use is associated with depression (Female OR: 1.24 [95%CI: 0.46, 2.02]; Male OR 1.13 [95%CI: 0.38, 1.87]) but not anxiety. Escalating poly-substance use is associated with depression among males (OR 0.72 [95%CI: 0.10, 1.33]). These findings should be taken into consideration when creating prevention programming and treatment strategies for adolescents. Substance use programming should be comprehensive, consider multiple substances, and be cognizant of symptoms of mental illness, particularly depression.

Distress tolerance and subsequent substance use throughout high school

OBJECTIVE

To examine the association of perceived distress tolerance-one's ability to endure aversive experiences-with subsequent substance use frequency during adolescence.

METHODS

High school students (N = 3,203) were surveyed semiannually from 2013 to 2017. The Distress Tolerance Scale (DTS) was administered at baseline (9th grade) and self-reported past 30-day number of days used of alcohol, cigarettes, e-cigarettes, cannabis, and opioids (range: 0-30) were assessed at all timepoints. Self-reported baseline ever (vs. never) use of each substance and depressive/anxiety symptom status (clinical and subclinical vs. none) were tested as moderators.

RESULTS

Among baseline never substance users, a greater baseline mean DTS score was associated with fewer days of alcohol, cigarette, and opioid use in past-30 days over 4 years of follow-up (IRR range = 0.60-0.84); among ever-users, baseline mean DTS was not significantly associated with substance use across follow-up timepoints (p-interaction = 0.03). The association of DTS and frequency of substance use did not differ by baseline mental health status for any substance (all ps > 0.05).

CONCLUSIONS

Greater perceived distress tolerance at the start of high school may be a protective factor against substance use frequency prior to initial use. Interventions that build distress tolerance in early adolescence may be warranted to prevent higher frequency substance use throughout high school.

Polysubstance use classes and health outcomes among women attending specialist substance use treatment services

INTRODUCTION

Substance use is increasingly prevalent among women. Little research examines subgroups of women with substance use issues to identify their characteristics and thus enable treatment recommendations. The present study used latent class analysis to identify subgroups of substance use among women in substance-use treatment based on use in the 30 days prior to intake and examined changes in mental health and treatment outcomes following 60 days of treatment.

METHODS

Participants were women (N = 493) attending specialist non-government substance use treatment services in New South Wales, Australia.

RESULTS

Four distinct classes of substance users were identified: (i) Amphetamine Type Stimulants (ATS) Polysubstance (40.6%, n = 200); (ii) Alcohol Only (33.1%, n = 163); (iii) Cannabis and Alcohol (17.0%, n = 84) and (iv) Other Polysubstance (9.3%, n = 46). Women in the ATS Polysubstance class were the youngest and those in the Alcohol Only class were the oldest.

DISCUSSION AND CONCLUSIONS

Findings show that classes with high polysubstance use (ATS Polysubstance) differed from the single-substance use class (Alcohol Only). The ATS Polysubstance class had significantly greater improvements in health outcomes after 60 days compared to the Alcohol Only class. These findings suggest that although women with polysubstance use can benefit from substance use treatment, younger women (ATS Polysubstance) may benefit even more than older women (Alcohol Only). Future research should utilise a longitudinal design and examine additional psychosocial characteristics to extend on current findings.

Neuroimaging evidence for structural correlates in adolescents resilient to polysubstance use: A five-year follow-up study

Early initiation of polysubstance use (PSU) is a strong predictor of subsequent addiction, however scarce individuals present resilience capacity. This neuroimaging study aimed to investigate structural correlates associated with cessation or reduction of PSU and determine the extent to which brain structural features accounted for this resilient outcome. Participants from a European community-based cohort self-reported their alcohol, tobacco and cannabis use frequency at ages 14, 16 and 19 and had neuroimaging sessions at ages 14 and 19. We included three groups in the study: the resilient-to-PSU participants showed PSU at 16 and/or 14 but no more at 19 (n = 18), the enduring polysubstance users at 19 displayed PSU continuation from 14 or 16 (n = 193) and the controls were abstinent or low drinking participants (n = 460). We conducted between-group comparisons of grey matter volumes on whole brain using voxel-based morphometry and regional fractional anisotropy using tract-based spatial statistics. Random-forests machine-learning approach generated individual-level PSU-behavior predictions based on personality and neuroimaging features. Adolescents resilient to PSU showed significant larger grey matter volumes in the bilateral cingulate gyrus compared with enduring polysubstance users and controls at ages 19 and 14 (p<0.05 corrected) but no difference in fractional anisotropy. The larger cingulate volumes and personality trait "openness to experience" were the best precursors of resilience to PSU. Early in adolescence, a larger cingulate gyrus differentiated adolescents resilient to PSU, and this feature was critical in predicting this outcome. This study encourages further research into the neurobiological bases of resilience to addictive behaviors.

Medical use and misuse of psychoactive prescription medications among US youth and young adults

OBJECTIVE

To investigate prevalence and correlates of medical use and misuse of psychoactive prescription medications among US youth and young adults.

DESIGN

Cross-sectional, self-reported surveys from the 2015-2018 National Survey of Drug Use and Health. Sampling was probabilistic and nationally representative.

SETTING

The target population included individuals from households, non-institutional group quarters (eg, college dormitories) and civilians living on military bases. Questionnaires were completed using computer-assisted self-interview methods.

PARTICIPANTS

Our analytical sample included youth and young adults aged 12-25 years (n=110 556). Psychoactive prescription medication misuse was a report by the respondent that they had used psychoactive prescription medications in the past year in any way not directed or prescribed for them. Medical use was defined as past-year use without a report of misuse. Because certain variables were assessed only among adults, our multivariable analysis to identify correlates of misuse was restricted to young adults aged 18-25 years (n=55 690).

RESULTS

Among US youth aged 12-17 years, 25.0% reported use of any psychoactive prescription medication assessed, and 5.7% reported past-year use of at least two psychoactive prescription medications. Among youth who used any psychoactive prescription medications, 20.9% (1.3 million) reported misuse; 3.4% were classified as having substance use disorder. Past-year use of each psychoactive prescription medication was: opioids (19.0%), stimulants (7.2%), tranquillisers (4.3%) and sedatives (2.2%). Among users of each psychoactive prescription medication, the estimated percentage reporting misuse was as follows: opioids (17.6%, 0.8 million), stimulants (24.2%, 0.4 million), tranquillisers (40.1%, 0.4 million) and sedatives (14.2%, 80 000). Among users of each psychoactive prescription medication, the estimated percentage having substance use disorder was as follows: opioids 2.6%, stimulants 3.0%, tranquillisers 7.0% and sedatives 3.6%. Analyses among young adults aged 18-25 years revealed that, compared with never users of non-prescription substances (including alcohol, tobacco, marijuana, cocaine, heroin), opioid misuse increased with: more recent use of non-prescription substances (adjusted prevalence ratios (APRs)=8.26, 2.75 and 2.41 for past ≤30-day, ≤12-month and >12-month use, respectively); and a higher number of substances used (APRs=1.69, 3.44, 6.82, 10.60 and 20.60 for 1, 2, 3, 4 and 5+ substances, respectively) (all p<0.05). Similar patterns were seen for stimulants, tranquillisers and sedatives.

CONCLUSIONS

It is important to monitor the diversity of medication misuse behaviours among youth and young adults, given their potential for abuse liability. Modifiable risk factors for prescription substance misuse, such as tobacco and other non-prescription substance use, underscore the need for comprehensive approaches towards health promotion among youth and young adults.

Differential patterns of e-cigarette and tobacco marketing exposures among youth: Associations with substance use and tobacco prevention strategies

BACKGROUND

This study identified patterns of tobacco marketing exposures among youth and examined their associations with substance use and tobacco prevention strategies.

METHODS

In Fall 2018, 2,058 middle and high school students (ages 11-18) in an Appalachian county completed a substance use and behavioral health surveillance survey. We conducted latent class analysis (LCA) to identify exposure classes based on responses to 14 tobacco marketing exposures. Multinomial logistic regression was then performed to determine associations between the latent classes with past 30-day substance use and tobacco prevention strategies (e.g., school policies, parental rules, prevention messages).

RESULTS

Four latent classes of marketing exposure were identified among middle school students: low exposure, television, social media, and high exposure. Multinomial logistic regression found significant associations between e-cigarette use with the social media and high exposure classes, while prescription drug use was associated with the social media class and alcohol use with the high exposure class. For high school students, five classes were identified: low exposure, social media, environmental, cigarettes, and high exposure. E-cigarette and prescription drug use were associated with the social media and high exposure classes. Cigarette use was associated with the social media class. School rules prohibiting e-cigarettes were associated with the television class for middle school students. Self-reported exposure to prevention messages about the harms of tobacco were associated with multiple exposure classes for both middle (television and social media) and high school (social media and cigarettes) students, suggesting that both pro- and anti-tobacco communications have become ubiquitous and may be saturating youth.

CONCLUSION

This study demonstrates the need for stricter tobacco marketing regulations and multi-level interventions beginning in early adolescence that focus on increasing media-based literacy for youth to better discern tobacco prevention messages from pro-tobacco communications.

A latent class analysis of changes in adolescent substance use between 1988 and 2011 in Sweden: associations with sex and psychosomatic problems

AIMS

To characterize changes in patterns of adolescent substance use in Sweden between 1988 and 2011, and to assess whether sex and psychosomatic problems were associated with substance use and whether these associations changed over time.

DESIGN

Secondary analysis of repeated cross-sectional survey data. Survey data were collected eight times and analyzed as four cohorts (1988-91, 1995-98, 2002-05 and 2008-11).

SETTING AND PARTICIPANTS

The sample included all 15-16-year-olds in Värmland County, Sweden (n = 20 057).

MEASUREMENTS

Binary-coded substance use measures included life-time use of alcohol and tobacco, getting drunk and past school year use of inhalants. An eight-item scale was used to assess psychosomatic problems.

FINDINGS

A three-class model fitted the data best (i.e. non/low use, mainly alcohol use and polysubstance use). The patterns of substance use were different among cohorts; most notably, adolescents in the last cohort had lower odds of being included in the alcohol and polysubstance use classes rather than the non/low use class than in the earlier cohorts (all Ps < 0.001). Males had higher odds than females of being in the polysubstance use class rather than the non/low use class among the first three cohorts (all Ps < 0.001) but not the last. Sex was not associated with inclusion in the alcohol use class rather than the non/low use class. Adolescents who reported more psychosomatic problems had higher odds of being included in the alcohol and polysubstance use classes rather than the non/low use class (all Ps < 0.001). The associations of sex and psychosomatic problems with class inclusion did not change during the study period.

CONCLUSIONS

Between 1988 and 2011, patterns of substance use among adolescents in Sweden shifted away from polysubstance use and alcohol use to non-use or low use. Associations between patterns of substance use and sex and psychosomatic problems remained largely consistent across the study period.

Clinical characteristics distinguishing tramadol-using adolescents from other substance-using adolescents in an out-patient treatment setting

BACKGROUND

Non-medical Prescription Opioid Use (NMPOU) has increased worldwide during the last decades, and specifically, tramadol misuse may represent a novel pattern of substance use among adolescents. The present study aims to analyze characteristics distinguishing tramadol-using adolescents from other substance-using adolescents seeking out-patient treatment.

METHODS

This is a cross-sectional study of treatment-seeking patients between 13 and 24 years of age in an out-patient facility for substance use problems in Malmö, Sweden. A total of 526 treatment-seeking adolescents at an out-patient treatment center were included. Data on substance use, treatment history and socio-demographic variables were extracted through a semi-structured interview method aimed specifically for adolescents with alcohol or drug problems (Ung-DOK). Lifetime tramadol users were compared to non-users, and also, primary tramadol users were compared to remaining subjects.

RESULTS

Thirty-one percent (n = 162) were tramadol users (lifetime prevalence). In logistic regression, the tramadol group showed a significantly increased risk of tobacco use, problematic lifetime cocaine, benzodiazepine and amphetamine use, and were more likely to report contacts with the judicial system, and less likely to report contacts with child or adult psychiatry, and more likely to have parents born outside the Scandinavian countries. In logistic regression, primary tramadol use was negatively associated with frequent cannabis use.

CONCLUSIONS

Tramadol use appears to be a novel pattern among treatment-seeking adolescents. They showed a significantly increased risk of initiation of other illicit drugs and criminal behaviour, despite less contact with psychiatric care. More attention may be needed to this relatively novel pattern of opioid use.

Association between illegal use of substances and suicidal behavior in school students: An integrative review of empirical data

PURPOSE

Investigation of the association between type of suicidal behavior and type and frequency of illegal use of substances (IUS) among school students (aged between 12 and 18 years), with a focus on gender differences.

DESIGN AND METHODS

A systematic review in PubMed, CINAHL, PsychINFO, and Scopus was performed. Identified articles were published between 2007 and 2018.

RESULTS

Twenty empirical studies confirmed the association between IUS and suicidality, strongly differentiated between males and females, highlighting the importance of gender-specific mediating factors.

CONCLUSIONS

Mental health nurses need to document gender factors, frequency, and motivation of IUS when screening adolescents experiencing suicidal behavior and IUS.

The Dangerous Pattern of Concurrent Use of Alcohol and Cocaine Among Drunk-Drivers of Northeast Italy

Aim

To estimate the prevalence of drug and polydrug use among drunk-drivers during the driving license regranting program, in order to assess the inclusion of toxicological tests on hair and urine samples in the systematic methodology in this category of subjects.

Short summary

A total of 2160 drunk-drivers were tested for alcohol and drugs during driving license regranting. Thirty-one subjects showed alcohol use, 212 illicit drug use and, among these, 131 were polydrug users. Nineteen different patterns of drug and polydrug use were found. Cocaine was detected in 165 subjects.

Methods

The study was performed on 2160 drunk-drivers examined at Legal Medicine and Toxicology Unit of the University of Padova, in a 3-year-period (2014-2017). The positivity for one or more illicit drugs in hair or urine samples was confirmed by LC/MS and GC/MS methods. Chi-square test, Fischer's exact test and Cochran-Armitage Trend test were used to study the correlation between general characteristics of the examined sample and the presence of drug/polydrug use.

Results

Thirty-one subjects showed alcohol use, 212 illicit drug use and, among these, 131 were polydrug users. Nineteen different patterns of drug and polydrug use were found. Cocaine was detected in 165 subjects in whom 122 showed a concurrent use of alcohol and cocaine, identified through the detection of cocaethylene in hair samples. No significant association and/or trends between drug/polydrug use and the general characteristics of the sample were detected.

Conclusions

The results show that drug and polydrug use among drunk-drivers should be subjected to toxicological as well as alcohological monitoring, especially in the regranting procedure. The implementation of this procedure could improve the knowledge of dimensions of the issue, providing a powerful means for the reduction of phenomenon of driving under the influence of alcohol and drugs.

Heated tobacco products likely appeal to adolescents and young adults

BACKGROUND

Beginning in the 1960s in the USA and globally since 1998, tobacco companies have beenaggressively promoting heated tobacco products (HTP). In 2016, Philip Morris International (PMI) applied to the US Food and Drug Administration (FDA) seeking authorisation to market their IQOS HTP system and flavoured 'HeatSticks' in the USA as a modified-risk tobacco product (MRTP).

METHODS

We systematically evaluated the publicly available data PMI submitted to FDA in its MRTP application to determine whether PMI's IQOS product meets the US Tobacco Control Act's standard for MRTP claims. We examined whether PMI provided sufficient data showing tobacco users will not initiate with IQOS, that youth will not misperceive the MRTP-related claims being made concerning IQOS, and how youth perceive health risks associated with IQOS.

RESULTS

PMI's own studies failed to provide evidence that youth, including non-users and former users, will not find IQOS appealing, will not initiate use of IQOS and will not perceive these products as risk-free. Further, PMI did not refer to independent studies conducted among adolescents which could influence their conclusions. Finally, their studies suffered from design and implementation flaws and cannot be relied on to support the proffered claims.

CONCLUSION

PMI's own data and available evidence from scientific studies conducted independent of the tobacco industry regarding how novel tobacco products are currently being marketed suggest that introduction of IQOS will result in adolescent and young adult non-users initiating tobacco use with IQOS and could also increase poly-use of IQOS along with other tobacco products.

Role of smoking intention in tobacco use reduction: A mediation analysis of an effective classroom-based prevention/cessation intervention for adolescents

INTRODUCTION

Although some school-based tobacco cessation and prevention programs have been proven to be effective, there remains a lack of understanding of how these programs succeed.

METHODS

This longitudinal study aimed to test smoking intention as a mediator of Project EX's intervention efficacy to reduce tobacco use. Using a computerized random number generator, six high schools located in the Mediterranean coast were randomly selected to participate in the program condition (Spanish version of Project EX) or the waiting-list control group with baseline, immediate-posttest, and 12-month follow-up assessments. At baseline, 685 adolescents aged 14-20 years (mean age: 14.87; SD = 0.92; 47.4% were females) were evaluated using self-administered tests of tobacco, and smoking intention. A biomarker of smoke inhalation, a measurement of exhaled carbon monoxide (ECM), was used. Mediation analyses were conducted using the PROCESS v2.12 macro for Windows.

RESULTS

Project EX had a significant effect on smoking intention. Indirect effects indicated that Project EX reduced the ECM level, and number of cigarettes used.

CONCLUSIONS

This is the first Spanish study that explored intention as a mediator of the long-term efficacy of Project EX to reduce tobacco use in adolescents. Results suggested that interventions that reduce consumption intention at short-term are more likely to be successful in decreasing tobacco use in the long-term.

The Influence of Adolescents' Social Networks on Alcohol Consumption: A Descriptive Study of Spanish Adolescents Using Social Network Analysis

In adolescence, friends are important due to their influence on the acquisition of habits such as alcohol consumption. However, there is a lack of studies that describe the structural context of adolescents, which would be useful to implement prevention strategies. Therefore, our research question was how adolescent friendship networks influence alcohol consumption. Our goal was to determine the structural profile of adolescent at-risk alcohol users and their relational context in the classroom. We designed a descriptive cross-sectional study based on social network analysis to analyze structural patterns. We recruited 195 students. Social-network and alcohol-consumption variables were analyzed using the UCINET and STATA programs. Some 86.67% of participants had consumed alcohol at some time in their lives and the prevalence of at-risk alcohol use was higher in females (50.48% vs. 49.52%; OR: 1.84; CI 95%: 0.99⁻3.43%; p = 0.036). The lower the intensity of friendship, the more contacts adolescent at-risk alcohol users had within the network, and the easier it was for them to access their peers. Consequently, we conclude that the structure of a class is a key factor that merits further research.