Peter Wennberg

Peter Wennberg
Stockholm University | SU · Department of Public Health Sciences

Professor

About

120
Publications
22,509
Reads
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1,537
Citations
Citations since 2017
38 Research Items
742 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Introduction
Peter Wennberg currently works at the Department of Public Health Sciences at Stockholm University. Peter does research in Addiction, Clinical Psychology, Personality Psychology and Psychometrics.

Publications

Publications (120)
Article
The Structured Clinical Interview for Gambling Disorder (SCI-GD) has the potential to bridge a diagnostic clinical gap, but psychometric evaluations have been scarce, in particular in relation to self-reported diagnostic criteria. This study analyzed existing data, including Swedish gamblers ( N = 204) from treatment- and help-seeking contexts, sel...
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The aim of this prospective cohort study was to examine how alcohol consumption by mothers and fathers, parental monitoring (knowledge, control and solicitation), adolescent disclosure and novelty seeking were associated with the likelihood of alcohol use and inebriation among adolescents in three different age groups (13–14 years, 14–15 years, and...
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The comparative psychometric properties of self-report measures for gambling are insufficiently evaluated, in particular regarding factor structure and item response properties. Confirmatory factor and Rasch analyses were tested for three widely used gambling measures assessing problem gambling and related constructs, that is, the Problem Gambling...
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Background: Alcohol interventions targeting the adult population are often conducted in healthcare settings, while preventive interventions often target adolescents or young adults. The general working population is often overlooked. A workplace-based intervention, consisting of development and implementation of an organizational alcohol policy, a...
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Background Although several studies have found a high incidence of coexisting mental health problems among adolescents with substance use problems, follow-up studies addressing how these conditions change over time are rare. The study will describe and analyze indications of mental health problems and how various risk factors predict outcomes 1 yea...
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The association between problem gambling and suicidal behaviours is well established in treatment seeking populations, but less explored among sub-clinical problem gamblers in the general population. The aim of this study was to examine the association between problem gambling (including moderate risk gambling) and suicidal ideations/suicide attemp...
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This study presents the results of a longitudinal research project focusing on long-term outcomes among young people after initiation of outpatient treatment for substance use problems (SUP) in Sweden. Young people are defined with the age group 13–25 years. A clinical sample of 451 young people (29% girls, median age 17 years) completed a structur...
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Co-occurring psychiatric comorbidity is high among problem gamblers, and anxiety disorders has repeatedly been linked to problem gambling. Less conclusive, however, is the association between problem gambling and specific anxiety disorders. The aim of this study is to examine the association between problem gambling and specific anxiety disorders i...
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Swedish drug policy has a strong focus on minor drug violations. This longitudinal study analyses the association between criminality and substance use problems among young people who have received outpatient treatment and risk factors that predict continued problems with criminality. Research on this target group is under development in Sweden, bu...
Preprint
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Background: Although several studies have found a high incidence of coexisting mental health problems among adolescents with substance abuse problems, follow-up studies addressing how these conditions change over time are rare. The study will describe and analyze indications of mental health problems and how various risk factors predict outcomes on...
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The novel gambling disorder identification test (GDIT) was recently developed in an international Delphi and consensus process. In this first psychometric evaluation, gamblers (N = 603) were recruited from treatment- and support-seeking contexts (n = 79 and n = 185), self-help groups (n = 47), and a population sample (n = 292). Participants complet...
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The importance of personality traits for the outcome of psychiatric treatment, including treatment for alcohol use disorder (AUD), has been widely acknowledged. Also, research on autism spectrum disorders has evolved in recent years, emphasizing that the behavioral traits within these neuropsychiatric disorders exist on a dimension both within and...
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Aim There is a lack of knowledge about how adolescents with substance abuse problems manage after taking part in treatment. It is also difficult to perform traditional follow-up studies with this group. This article presents the outcome of a prospective study of 455 adolescents who underwent outpatient treatment, based on data taken from official r...
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Objectives Diverse instruments are used to measure problem gambling and Gambling Disorder intervention outcomes. The 2004 Banff consensus agreement proposed necessary features for reporting gambling treatment efficacy. To address the challenge of including these features in a single instrument, a process was initiated to develop the Gambling Disord...
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Introduction and Aims The gender difference in alcohol use seems to have narrowed in the Nordic countries, but it is not clear to what extent this may have affected differences in levels of harm. We compared gender differences in all‐cause and cause‐specific alcohol‐attributed disease burden, as measured by disability‐adjusted life‐years (DALY), in...
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Individuals with Autism Spectrum Disorder (ASD) have high rates of “comorbidity”. Research on concurrent substance use (disorder) in ASD, however, is scarce and findings have been inconsistent. This study aims at assessing the prevalence of risk drinking in adolescent and young adult twins with and without autism spectrum problems. Data from a Swe...
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Background: Several studies have investigated the role of snus as an aid to become smoke-free, but few have focused on who use snus, how they perceive snus use, why and how they quit, and their perception of being non-snus users. The purpose of this paper is to describe snus cessation patterns. Methods: Respondents are part of a 7-year follow-up...
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Background: High alcohol consumption poses risks to individual health and society. Previous alcohol interventions have mainly focused on high-risk consumers or young adults in school-based settings. Since the majority of the adult population is in the workforce, the workplace can be considered a favorable arena for implementing interventions. Obje...
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Purpose: Individual factors associated with managers' organisational alcohol policy knowledge and inclination to initiate early alcohol interventions have been understudied. This study aims to examine differences in managers' policy knowledge and inclination across a range of socio-demographic, work-related and health characteristics, and it aims t...
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Background: Gambling is not uncommon among adolescents, and a non-trivial minority has serious problems with gambling. Therefore, enhanced knowledge about factors that may prevent against problematic gambling among youth is needed. Prior research has shown that a strong school ethos, which can be defined as a set of attitudes and values pervading...
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Affect Phobia Treatment (APT) is based on an integrative theory involving the use of psychodynamic principles for understanding a client’s psychological dynamics, experiential principles for engaging and working with the client’s affect, and behavioral principles of exposure and response prevention for desensitizing the client to the fear of affect...
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Autism is suggested to be a dimensional construct and often represents a comorbid state. However, research on the clinical implications of the presence of autistic traits is scarce. This study aimed to investigate the impact of subclinical autistic traits in mentalization‐based treatment (MBT) for concurrent borderline personality disorder (BPD) an...
Preprint
BACKGROUND High alcohol consumption poses risks to individual health and society. Previous alcohol interventions have mainly focused on high-risk consumers or young adults in school-based settings. Since the majority of the adult population is in the workforce, the workplace can be considered a favorable arena for implementing interventions. OBJEC...
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Aims: This study describes changes in alcohol habits in age and gender strata among the Swedish general population during the 21-year period following the Swedish EU membership in 1995. Methods: The Alcohol Use Disorders Identification Test (AUDIT) was distributed as a postal questionnaire to randomly selected cross-sectional samples every fourth y...
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Introduction: Adolescence is associated with an increased inclination for risk behaviors, like gambling and heavy episodic drinking (HED). While impulsivity is a well-documented risk factor, the purpose of this study is to explore if there are variables modulating this association. The study examined the effects of impulsivity and psychological he...
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Aims: The Alcohol Use Disorders Identification Test (AUDIT) is a well-established and widely used screening instrument. It has been shown that AUDIT has good criterion validity in relation to alcohol abuse and dependence according to DSM-IV, but it has not yet been validated following the introduction of the DSM-5 diagnostic system. The aim of this...
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The Problem Gambling Severity Index (PGSI) is a screening instrument frequently used to identify risk and problem gambling. Even though the PGSI has good psychometric properties, it still produces a large proportion of misclassifications. Aims To explore possible reasons for misclassifications in problem gambling level by analysing previously clas...
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The aim of this study was to predict alcohol inebriation and mental health (internalizing and externalizing problems plus well-being), and potential gender-specific patterns among young adolescents, by a biopsychosocial model of personality traits. Self-reported data from 853 adolescents (479 girls) in Sweden, aged 13–15 years, from the Longitudina...
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The aim of this study was to analyze the association between adolescents’ future orientation and their engagement in gambling and in risk gambling, respectively. The data used come from the Stockholm School Survey, collected in 2016 among students in the ninth grade in elementary school (15–16 years) and in the second grade of upper secondary schoo...
Preprint
UNSTRUCTURED Research on identification and treatment of problem gambling has been characterized by a wide range of outcome measures and instruments. These circumstances are problematic when, for example, comparing the effectiveness of different treatments. This protocol describes the development of the Gambling Disorders Identification Test (G-DIT...
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Background Research on the identification and treatment of problem gambling has been characterized by a wide range of outcome measures and instruments. However, a single instrument measuring gambling behavior, severity, and specific deleterious effects is lacking. Objective This protocol describes the development of the Gambling Disorder Identific...
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Aims: There is a scarcity of clinical trials on psychological treatments for concurrent borderline personality disorder (BPD) and substance use disorder (SUD). Mentalization-based treatment (MBT) have shown efficacy in several trials on BPD. The aim of the present study was to examine the feasibility and effectiveness of MBT for concurrent BPD and...
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The Reasons for Gambling Questionnaire (RGQ) is a self-report instrument containing 15 items to assess individual motives or reasons to gamble. This study presents psycho-metric data on the Swedish version of the instrument with a focus on factor structure. A Swedish sample (N = 19,530) was screened for risk gambling with the Lie/Bet questionnaire,...
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Aims: To investigate the influence of the A1 allele of the TAQ1A polymorphism in the dopamine D2 receptor (DRD2) gene region on mortality in adult individuals with alcohol dependence. Methods: The study sample consisted of 359 alcohol-dependent individuals treated for severe alcohol withdrawal symptoms in 1997. Years of survival was studied in a...
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The Reasons for Gambling Questionnaire (RGQ) is a self-report instrument containing 15 items to assess individual motives or reasons to gamble. This study presents psychometric data on the Swedish version of the instrument with a focus on factor structure. A Swedish sample (N = 19,530) was screened for risk gambling with the Lie/Bet questionnaire,...
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Aim: This article describes and discusses the Swedish UngDOK interview and its psychometric properties. Method: The study is based on empirical data from 1633 intake interviews collected by 15 units in ten cities and focused primarily on the two central sections of intake form: alcohol and drug use and mental health. The statistical analyses con...
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The aim of this study was to investigate patterns of self-reported emotional and behavioral problems and self-rated well-being in relation to alcohol experiences among Swedish girls and boys in early adolescence. A general sample of 1383 young people aged 12 to 13 years reported their internalizing and externalizing problem styles, and their well-b...
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Background: Motives for gambling have been shown to be associated with gambling involvement, and hence important in the understanding of the etiology of problem gambling. The aim of this study was to describe differences in gambling motives in different subgroups of lifetime risk gamblers, categorized by: age, gender, alcohol- and drug habits and t...
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The aim of this study was to make the first evaluation of the psychometric properties of the Affect Phobia Test, using the Swedish translation - a test developed to screen the ability to experience, express and regulate emotions. Data was collected from a clinical sample (N = 82) of patients with depression and/or anxiety participating in randomize...
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The literature on predictors of treatment outcome is relatively extensive, but results on personality factors that predicts treatment outcome among alcohol dependent patients are still inconclusive. The aim of this study was to investigate if the scales of the Temperament and Character Inventory could predict treatment outcome after 18 months in a...
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Aim: The aim of this study was to analyse risk and binge drinking at 12-month follow-up in young women with risk drinking who received motivational interviewing compared with controls. Methods: Young women attending Swedish youth health centres were randomised into intervention or control groups. The intervention group members were asked about t...
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While the association between problem gambling and alcohol use disorders has been studied previously, little is known about the association between risk gambling and risk drinking. This study aimed at examining the association between at-risk gambling and binge drinking in the general Swedish population and to test whether this association remained...
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Background: Alcohol habits in Sweden, assessed as sales and estimates of unrecorded consumption, have changed since joining the EU. Earlier studies using the Alcohol Use Disorders Identification Test (AUDIT) showed that reported consumption is consistent with sales data, which makes it possible to assess consumption according to sex and age. Aims:...
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Twelve-month well-being outcomes were investigated for 835 participants in 1 of 2 randomized controlled trials offering online assessment and brief intervention for either problematic alcohol (n = 633) or drug use (n = 202). The well-being of participants who had reduced their substance use to a less problematic level (regardless of intervention) o...
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Many attempts have been made to derive alcohol use typologies or subtypes of alcohol dependence and this study aimed at validating the type I/type II typology in a treatment sample of socially stable alcohol dependent males and females. A second aim was to compare the two types with respect to their temperament profiles. Data was part of a larger o...
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Sinadinovic, K., Wennberg, P., & Berman, A. (2014). Short-term changes in substance use among problematic alcohol and drug users from a general population sample. The International Journal Of Alcohol And Drug Research, 3 (4), 277-287. doi: http://dx.doi.org/10.7895/ijadr.v3i4.186 Aims: To investigate 12-month changes among individuals with baseline...
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Aims To study the prevalence of cannabis use and drug-related problems among European adolescents and the utility of the prevention paradox. Methods Survey data from the European School Survey Project on Alcohol and Other Drugs (ESPAD) in 2007 in the 27 countries with information about drug use and drug-related problems was used. We analysed the p...
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Background/aims: Most problematic alcohol users never seek professional help to reduce their use, and Web-based interventions might fulfill users' unmet needs for professional support. Methods: This randomized controlled trial compared two open Web-based interventions, one extended self-help program and one brief screening and feedback intervent...
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Background Increasing alcohol consumption and related harms have been reported among the elderly population of Europe. Consequently, it is important to monitor patterns of alcohol use, and to use a valid and reliable tool when screening for risky consumption in this age group. The aim was to evaluate the internal consistency reliability and constru...
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The association between personality and gambling has been explored previously. However, few studies are based on representative populations. This study aimed at examining the association between risk gambling and personality in a representative Swedish population. A random Swedish sample (N = 19,530) was screened for risk gambling using the Lie/Bet...
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Background Stability in alcohol habits varies over time and in subgroups, but there are few longitudinal studies assessing stability in alcohol habits by socio-demographic subgroups and potential predictors of stability and change. The aim was to study stability and change in alcohol habits by sex, age, and socio-economic position (SEP). Methods D...
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Purpose – To a great extent research about smoking cessation has focussed on effects from different support programs and means, in spite of that several studies have shown that over 90 percent quit smoking without such help. Factors that are important for the individual in the process from being a smoker to becoming smoke-free is less examined and...
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Prevalence estimates of drug use, or of its consequences, are considered important in many contextsand may have substantial influence over public policy. However, it is rarely possible to simply countthe relevant individuals, in particular when the defining characteristics might be illegal, as in the druguse case. Consequently methods are needed to...
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Objective: This trial investigated the effects of access to an Internet-based screening and brief intervention site for illicit drug users. This article adds to previously published results from the 3- and 6-month follow-ups by extending the follow-up period to 12 months and reporting changes in substance use between the 6- and 12-month follow-ups...
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Objectives The main aim of the study was to examine how the discrepancy between role expectations prior to psychotherapy and experiences of ongoing psychotherapy related to therapeutic alliance. We hypothesized that a similarity between patient role expectations and experiences would be associated with a stronger alliance. The study also examined w...
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This study aimed at describing the dimensionality of the Alcohol Use Disorders Identification Test. The sample (n=3212) was an aggregate of four identical surveys conducted in the general Swedish population between 1997-2009. Unidimensionality was tested using Rasch analysis and the fit of one, two and three dimensional structures was tested with c...
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The present study aimed to examine whether patients' pretherapy motivation was related to other patient characteristics and whether it predicted retention in psychotherapy. Data were collected within a naturalistic outcome study of various forms of psychotherapy for patients (N = 172) with substance use disorders (SUD). Therapy motivation was measu...
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This study aimed at describing female drinking from young adolescence to middle age in a female Swedish community cohort (N = 238). Different aspects of alcohol habits were assessed at the ages of 14, 27, and 43, and the analyses focused on stability and change over this time. The results showed that large variations in alcohol habits over the life...
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Often in clinical practice, a diagnosis of alcohol dependence or abuse does not provide enough information to establish an adequate treatment plan. Hence, multidimensional instruments have been constructed better to describe the extent and character of a patient's alcohol problem. The purpose of the current article is to present the AVI-R2, a self-...
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The aim of this study is to investigate the effects of an Internet-based screening and brief intervention (SBI) site for problematic alcohol and drug use among illicit drug users. Individuals searching for information about alcohol or drugs online who scored over 0 on the Drug Use Disorders Identification Test (DUDIT) and were 15 years or older wer...
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This prospective study aimed to describe alcohol habits in patients with chronic pain compared with those in a matched control group from the general Swedish population. In total, 100 consecutive patients enrolled were matched against 100 individuals in a control group on the basis of age and sex. Alcohol habits were measured using the Alcohol Use...
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IntroductionThe typical drinking pattern over the life course begins with a debut in the teenage-years, followed by increased consumption until early adulthood, and thereafter gradually decreased consumption. However, more recent cohorts show a slower decline in alcohol habits with increasing age. Given the progressing ageing of the population ther...
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According to the prevention paradox, a majority of alcohol-related problems in a population can be attributed to low to moderate drinkers simply because they are more numerous than heavy drinkers, who have a higher individual risk of adverse outcomes. We examined the prevention paradox in annual alcohol consumption, heavy episodic drinking (HED) an...
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AIMS This study compared data quality and response rates for the Alcohol Use Disorders Identification Test (AUDIT) in a web-based versus in a paper-and-pencil format survey. SETTING Subjects were randomised to one of two parallel samples, one web-based and the other paper-based. Data were collected during 2009. Results The web-based format yielde...
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AIMS This study aimed at describing the effects of missing data when surveying alcohol consumption using a Random Digit Dialling procedure. Methods Data was part of the Monitor project including repeated monthly data on the alcohol habits in the general Swedish population. Non-respondents during four months were followed up a year later and asked...
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This study aimed to survey the changes in alcohol habits during a period with the European Union legal practices. Alcohol habits in Sweden were surveyed in the general Swedish population at four timepoints, in 1997, 2001, 2005 and 2009, using the 10-item AUDIT questionnaire. Four separate randomly drawn cross-sectional samples of 1,250 individuals...
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Internationally, the NEO Personality Inventory-Revised (NEO-PI-R) is a well established questionnaire for assessment of personality in accordance with the Five Factor Model. The instrument has been translated into many languages including Swedish. The aim of this study was to make a psychometric evaluation of the Swedish version of NEO-PI-R based o...
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The wide accessibility of computer-based technologies like the Internet and Interactive Voice Response (IVR) systems raises the question of whether population survey data could be collected more easily and cheaply compared to using paper questionnaires. In the area of possibly stigmatized behaviors such as problematic alcohol and drug use, the ques...
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This study aimed at identifying different alcohol drinking trajectories in early to late adolescence. We also examined whether certain factors predicted membership of a specific trajectory and to what extent trajectory membership was linked to later negative consequences. Data were drawn from a longitudinal cohort study starting with 1923 adolescen...
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A Swedish web-based service (www.escreen.se) offers self-assessment and self-monitoring of alcohol and drug use via on-line screening with the Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test (DUDIT) as well as in-depth risk assessment using extended versions of both tests (Alcohol-E and DUDIT-E). Use...
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Background Swedish accommodation to EU-policy has weakened state control over the alcohol supply as well as increased the inflow of drugs. Limiting alcohol and drug consumption must thus occur through reducing demand. As the Internet is virtually a universal phenomenon, influencing alcohol and drug behaviors via an Internet-based service is therefo...
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This study described the psychometric properties of the Swedish version of the Outcome Questionnaire (OQ-45.2) in a substance abuse sample (N=227). The test properties were satisfactory except for somewhat low internal consistency in the social role subscale. The results were similar to those obtained in other countries but systematic international...