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result(s) for
"Vanderplasschen, W."
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Impulsive choice predicts short-term relapse in substance-dependent individuals attending an in-patient detoxification programme
2015
Impulsivity is a hallmark characteristic of substance use disorders. Recently, studies have begun to explore whether increased impulsivity in substance-dependent individuals (SDIs) is associated with a greater propensity to relapse following treatment. Despite growing recognition of its multidimensional nature, however, most studies have treated impulsivity unilaterally. Accordingly, it remains unclear whether certain facets of impulsivity are more relevant to relapse than others. The aim of the current study was to examine the relationship between multiple facets of impulsivity and short-term relapse in SDIs. As a secondary aim, we explored the role of treatment retention in this relationship.
A personality-based impulsivity questionnaire (UPPS) and three neurocognitive tasks of impulsivity [stop-signal task (SST), delay discounting task (DDT) and Iowa gambling task (IGT)] were administered in a heterogeneous sample of 70 SDIs shortly following their entry in an in-patient detoxification programme. Mediation analyses were performed to explore whether the effects of impulsivity on relapse were mediated by treatment retention.
Performance on two neurocognitive indices of impulsive choice (i.e. delay discounting and impulsive decision-making) significantly predicted short-term relapse. The effects of delay discounting and impulsive decision-making on relapse propensity were mediated by treatment retention.
Neurocognitive indices of impulsivity may be more sensitive to the prediction of relapse than trait-based self-report questionnaires. Post-treatment relapse in SDIs may be reduced by targeting the processes involved in impulsive choice and by improving treatment retention in SDIs with inflated impulsivity.
Journal Article
Outcome Measurement and Evaluation as a Routine practice in alcohol and other drug services in Belgium (OMER-BE)
by
Vanderplasschen, W.
,
van den Brink, W.
,
Migchels, C.
in
Abstract
,
e-Poster Presentation
,
Questionnaires
2023
IntroductionThere is a variety of specialized outpatient and residential Alcohol and Other Drugs (AOD) services, but research on outcomes of these services is limited. Given the chronic, relapsing nature of AOD problems, there is a need for longitudinal research on outcomes after treatment in various AOD services.Patient-Reported Outcome Measures (PROMs) and Patient-Reported Experience Measures (PREMs) are hardly used in the AOD field but provide excellent tools and a framework to monitor progress and outcomes in these services based on experiences of service users.ObjectivesThe objectives of the OMER-BE study are to:1. Assess and compare patient characteristics at baseline in various treatment modalities2. Test and prepare the routine measurement of PROMs and PREMs in AOD services using a self-report tool3. Assess patient-reported experiences qualitatively in various treatment modalities for AOD patientsThe overall goal is to continuously assess and improve AOD services.MethodsWe have set up a naturalistic, longitudinal cohort study for which we will engage and follow up 250 AOD users as they present themselves in selected AOD services in four different treatment modalities (outpatient non-pharmacological treatment, outpatient substitution treatment, residential psychiatric treatment and therapeutic communities for addictions).Sociodemographic and clinical factors and PROMs will be assessed at baseline. PROMs and PREMs will be assessed at 45-, 90-and 180-days follow-up. The questionnaires that will be used during the baseline and follow-up assessments are based on the ICHOM Standard Set for Addictions (ICHOM SSA, 2020), a set of brief validated questionnaires to measure and monitor treatment outcomes routinely in AOD services.Following the 6-month follow-up we will perform a qualitative study in a subset of N=20 participants (5 per treatment modality). These participants will be invited to take part in an in-depth interview with one of the researchers, where the following topics will be discussed: treatment history, recovery experiences, helping and hindering factors in recovery, and experiences with different treatment modalities.Results47 participants have been recruited in the OMER-BE study up until October 2022. 38 (81%) of the participants were born male, 9 (19%) were born female. The average age of participants is 33, with ages ranging from 19 to 47 years old.Preliminary findings will be presented at the congress.Further recruitment of study participants up to a total of 250 will be undertaken until the end of 2023.ConclusionsThe OMER-BE study aims to assess and improve AOD services by using a self-report tool, measuring PROMs and PREMs.Disclosure of InterestNone Declared
Journal Article
Therapeutic Communities for Addictions: A Review of Their Effectiveness from a Recovery-Oriented Perspective
by
Colpaert, Kathy
,
Vanderplasschen, W.
,
Broekaert, Eric
in
Addicts
,
Alcohol
,
Behavior, Addictive - therapy
2013
Therapeutic communities (TCs) for addictions are drug-free environments in which people with addictive problems live together in an organized and structured way to promote change toward recovery and reinsertion in society. Despite a long research tradition in TCs, the evidence base for the effectiveness of TCs is limited according to available reviews. Since most of these studies applied a selective focus, we made a comprehensive systematic review of all controlled studies that compared the effectiveness of TCs for addictions with that of a control condition. The focus of this paper is on recovery, including attention for various life domains and a longitudinal scope. We searched the following databases: ISI Web of Knowledge (WoS), PubMed, and DrugScope. Our search strategy revealed 997 hits. Eventually, 30 publications were selected for this paper, which were based on 16 original studies. Two out of three studies showed significantly better substance use and legal outcomes among TC participants, and five studies found superior employment and psychological functioning. Length of stay in treatment and participation in subsequent aftercare were consistent predictors of recovery status. We conclude that TCs can promote change regarding various outcome categories. Since recovering addicts often cycle between abstinence and relapse, a continuing care approach is advisable, including assessment of multiple and subjective outcome indicators.
Journal Article
Exploratory Study on Domain-Specific Determinants of Opiate-Dependent Individuals’ Quality of Life
by
De Maeyer, J.
,
Vanderplasschen, W.
,
van Nieuwenhuizen, C.
in
Adult
,
Ambulatory Care - methods
,
Ambulatory Care - psychology
2011
Background/Aims: Studies on determinants of quality of life (QoL) among opiate-dependent individuals are scarce. Moreover, findings concerning the role of severity of drug use are inconsistent. This exploratory study investigates the association between domain-specific QoL and demographic, social, person, health and drug-related variables, and potential indirect effects of current heroin use on opiate-dependent individuals’ QoL. Methods: A cohort of opiate-dependent individuals who started outpatient methadone treatment at least 5 years previously (n = 159) were interviewed about their current QoL, psychological distress, satisfaction with methadone treatment and the severity of drug-related problems using the Lancashire Quality of Life Profile, the Brief Symptom Inventory, the Verona Service Satisfaction Scale for Methadone Treatment and the EuropASI. Results: None of the QoL domains were defined by the same compilation of determinants. No direct effect of current heroin use on QoL was retained, but path analyses demonstrated its indirect effects on the domains of ‘living situation’, ‘finances’ and ‘leisure and social participation’. Conclusion: These findings illustrate the particularity of each QoL domain and the need for a multidimensional approach to the concept. The relationship between current heroin use and various domains of opiate-dependent individuals’ QoL is complex, indirect and mediated by psychosocial and treatment-related variables.
Journal Article
Determinants of relapse and re-admission among alcohol abusers after intensive residential treatment
2010
Little information is available in Belgium on the number and characteristics of alcohol abusers who contact treatment agencies and on the effectiveness of these services. International research has identified some determinants of relapse and recovery after treatment, but additional research is needed in order to better tailor services to the needs of service users.
This study aimed at measuring abstinence and relapse among alcohol abusers (n = 249) after intensive, residential treatment in specialized units in five Belgian psychiatric hospitals. Six month outcomes concerning substance use, psychological health, social support and integration were studied using the EuropASI. Logistic regression analyses were performed to identify predictors of relapse and readmission.
Significant reductions in the severity of alcohol and psychological problems were observed, but six months after the initial treatment episode more than half of all respondents (54%) had been using alcohol regularly. The domains 'psychiatric problems' and 'patients' personal perspectives' were the best predictors of relapse and readmission. Also, 'patients' living situations' predicted relapse. Specific variables that independently predicted relapse were 'satisfaction with day activities' and 'number of days with problems due to alcohol'. Less severe psychiatric problems at the start of treatment and more severe psychiatric problems and negative feelings of wellbeing at the time of follow-up were independent predictors of readmission.
We conclude that treatment agencies need to recognize the relapsing nature of alcohol abuse and have to organize their services from a continuing care perspective, including specific attention for individuals' psychological needs and day/leisure activities.
Journal Article
The Effect of a Group-Based Mindfulness and Acceptance Training on Psychological Flexibility and Adherence to Antiretroviral Therapy Among Adolescents in Uganda: An Open-Label Randomized Trial
2024
Adherence to antiretroviral therapy (ART) is lower in adolescents with HIV (AWH) than in any other age group, partly due to self-regulatory challenges during development. Mindfulness and acceptance training have been shown to support psychological flexibility, a self-regulatory skill that potentially improves adolescent adherence to medication. We assessed the effect of weekly group-based mindfulness and acceptance training sessions on ART adherence among older adolescents (15–19 years) in Kampala, Uganda. One hundred and twenty-two AWH (median age 17, range 15–19 years, 57% female) receiving care at a public health facility in Kampala were randomized 1:1 to receive 4 weekly 90-min group sessions facilitated by experienced trainers or standard-of-care ART services. The training involved (Session 1) clarifying values, (Session 2) skillfully relating to thoughts, (Session 3) allowing and becoming aware of experiences non-judgmentally, and (Session 4) exploring life through trial and error. At baseline, postintervention, and 3-month follow-up, psychological flexibility was measured using the Avoidance and Fusion Questionnaire for Youth (AFQ-Y8), and self-reported ART adherence was assessed using the Morisky Medication Adherence Scale (MMAS-8). At baseline, the intervention and standard-of-care arms had similar psychological flexibility (AFQ-Y8 score:15.45 ± 0.82; 15.74 ± 0.84) and ART adherence (MMAS-8 score: 5.32 ± 0.24; 5.13 ± 0.23). Retention through the study was moderate (71%). Completion of mindfulness and acceptance training was associated with a significant reduction in psychological inflexibility at the 3-month follow-up (AFQ-Y8 score: 12.63 ± 1.06; 14.05 ± 1.07, P = .006). However, no significant differences were observed in self-reported adherence to ART at the 3-month follow-up (MMAS-8 score: 5.43 ± 0.23; 4.90 ± 0.33, P = .522). Group-based mindfulness and acceptance training improved psychological flexibility in this population of adolescents on ART in Uganda but did not significantly improve ART adherence. Future research should explore integrated approaches that combine behavioral management training with other empowerment aspects to improve ART adherence among AWH.
Journal Article
Comparison of Single and Multiple Agency Clients in Substance Abuse Treatment Services
2007
Background: Frequent and multiple service utilization among substance abusers is a well-known problem. However, little statistical evidence exists about overlapping agency populations. Methods: This phenomenon was studied in a clear-cut region in Belgium, based on intake information concerning all clients who addressed a drug treatment center within a 6-month period (n=1,139). Results: Multiple service utilization was rather common but not omnipresent during this particular registration period. Almost 15% of the clients were registered in more than one substance abuse treatment agency. Compared to single agency attendees, multiple agency clients appeared to be more often poly-substance abusers with a longer previous treatment history and greater problem severity. Conclusion: A continuous care perspective, interagency collaboration and a common tracking and documentation system are recommended to better address the needs of this specific subgroup of substance abusers. More research is needed to clarify whether these multiple service utilization patterns are caused by client-related, agency-related or other factors.
Journal Article
The Impact of Drug Treatment Courts on Recovery: A Systematic Review
by
Vanderplasschen, W.
,
Vander Laenen, Freya
,
Dekkers, Anne
in
Adult
,
Alcohols
,
Australia - epidemiology
2013
Introduction. Earlier reviews regarding the effectiveness of Drug Treatment Courts (DTCs) reported a reduction in reoffending and substance use. Although substance users suffer from other difficulties than drug use and judicial issues, none of these reviews focused on outcomes or effects of DTCs on drug-related life domains, such as social relationships, employment, or health. Therefor, the present paper aims to review the impact of adult DTCs on substance use and drug-related life domains. Method. Primary studies were systematically searched in Web of Knowledge. Observational and controlled evaluation studies of adult DTCs were considered eligible if substance use and/or drug-related life domains were measured. Results. Moderately positive results were found with respect to within-program substance use. Few studies used drug-related life domains as an outcome measure and most of them yielded no effects. Employment and family relations ameliorated when specific interventions were used. Discussion. DTCs yield beneficial outcomes and effects regarding within-program substance use. However, evidence regarding the impact of DTCs on post-program drug and alcohol use and on other drug-related life domains is scarce. These life domains and thus QoL possibly can be improved by DTCs if specifically targeted. Future research is warranted.
Journal Article
Impulsivity in Cocaine-Dependent Individuals with and without Attention-Deficit/Hyperactivity Disorder
by
Dom, Geert
,
Stevens, Laura
,
Roeyers, Herbert
in
Adult
,
Attention Deficit Disorder with Hyperactivity - psychology
,
Attention deficit hyperactivity disorder
2015
Background: Cocaine-dependent individuals (CDI) display increased impulsivity. However, despite its multifactorial nature most studies in CDI have treated impulsivity monolithically. Moreover, the impact of attention-deficit/hyperactivity disorder (ADHD) has often not been taken into account. This study investigates whether CDI with ADHD (CDI+ADHD) differ from CDI without an ADHD diagnosis and healthy controls (HC) on several impulsivity measures. Methods: Thirty-four CDI, 25 CDI+ADHD and 28 HC participated in this study. Trait impulsivity was assessed with the motor, attentional and non-planning subscales of the Barratt Impulsiveness Scale (BIS-11). Neurocognitive dimensions of impulsivity were examined with the stop signal task (SST), delay discounting task (DDT) and information sampling task (IST). Results: Relative to HC, both CDI and CDI+ADHD scored higher on all BIS-11 subscales, required more time to inhibit their responses (SST) and sampled less information before making a decision (IST). Greater discounting of delayed rewards (DDT) was only found among CDI+ADHD. Compared to CDI without ADHD, CDI+ADHD scored higher on the BIS-11 non-planning and total scale and showed higher discounting rates. Conclusion: CDI score higher on several indices of impulsivity relative to HC, regardless of whether they have concomitant ADHD or not. CDI+ADHD are specifically characterized by a lack of future orientation compared to CDI without ADHD.
Journal Article
Cannabis-Related treatment demands in Belgium: a socio-demographic and treatment seeking profile
2010
Aims
Most people appear to stop using cannabis when getting older, but a certain subgroup becomes cannabis dependent, has problems in various life areas and needs treatment. Our aim is to compare a number of sociodemographic and treatment seeking variables between treatment seekers with primary cannabis problems and those with primary alcohol, opiate, amphetamine or cocaine problems. Understanding how primary canna-bis users seeking treatment differ from other treatment seekers may assist clinicians in better tailoring treatment processes to clients' needs.
Methods
For this purpose, intake information on 1,626 persons seeking treatment in one of 16 treat-ment agencies in the province of Antwerp (Belgium) was registered via an on-line web application. Primary cannabis users seeking treatment were compared with primary alcohol, opiate, amphetamine and cocaine users by means of bivariate analyses (Chi-square tests and analyses of variance), followed by four logistic regression analyses.
Findings
14.5% of all clients used cannabis as their primary drug. Compared to primary alcohol, opiate, amphetamine or cocaine users seeking treatment, cannabis users seeking treatment appeared to be more often male, younger than 30 years old, Belgian and student. They are often referred to treatment by police or justice and 43.6% of them can be considered single-substance users. Multivariate analyses showed that besides age and sex, using no other substances than the primary drug and being registered in outpatient facilities only were significant determinants for being a primary cannabis user seeking treatment.
Conclusions
Primary cannabis users can clearly be differentiated from other drug users seeking treatment. Although cannabis plays an important part in a polydrug use pattern, persons who have cannabis as their primary drug often use only this one substance. Since they regularly have brief contacts with treatment agencies, more research is needed to measure the effect of this brief intervention.
Journal Article