588 results on '"Hedman, Erik"'
Search Results
102. Predictors of Symptomatic Change and Adherence in Internet-Based Cognitive Behaviour Therapy for Social Anxiety Disorder in Routine Psychiatric Care
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El Alaoui, Samir, primary, Ljótsson, Brjánn, additional, Hedman, Erik, additional, Kaldo, Viktor, additional, Andersson, Evelyn, additional, Rück, Christian, additional, Andersson, Gerhard, additional, and Lindefors, Nils, additional
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- 2015
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103. Optimal Cut-Off Points on the Health Anxiety Inventory, Illness Attitude Scales and Whiteley Index to Identify Severe Health Anxiety
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Hedman, Erik, primary, Lekander, Mats, additional, Ljótsson, Brjánn, additional, Lindefors, Nils, additional, Rück, Christian, additional, Andersson, Gerhard, additional, and Andersson, Erik, additional
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- 2015
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104. Effects of Baseline Problematic Alcohol and Drug Use on Internet-Based Cognitive Behavioral Therapy Outcomes for Depression, Panic Disorder and Social Anxiety Disorder
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Gajecki, Mikael, Berman, Anne H., Sinadinovic, Kristina, Andersson, Claes, Ljotsson, Brjann, Hedman, Erik, Ruck, Christian, Lindefors, Nils, Gajecki, Mikael, Berman, Anne H., Sinadinovic, Kristina, Andersson, Claes, Ljotsson, Brjann, Hedman, Erik, Ruck, Christian, and Lindefors, Nils
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- 2014
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105. Effectiveness and cost-effectiveness of individually tailored Internet-delivered cognitive behavior therapy for anxiety disorders in a primary care population : A randomized controlled rial
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Bergman Nordgren, Lise, Hedman, Erik, Etienne, Julie, Bodin, Jessica, Kadowaki, Åsa, Eriksson, Stina, Lindkvist, Emelie, Andersson, Gerhard, Carlbring, Per, Bergman Nordgren, Lise, Hedman, Erik, Etienne, Julie, Bodin, Jessica, Kadowaki, Åsa, Eriksson, Stina, Lindkvist, Emelie, Andersson, Gerhard, and Carlbring, Per
- Abstract
A significant proportion of the general population suffers from anxiety disorders, often with comorbid psychiatric conditions. Internet-delivered cognitive behavior therapy (ICBT) has been found to be a potent treatment for patients with specific psychiatric conditions. The aim of this trial was to investigate the effectiveness and cost-effectiveness of ICBT when tailoring the treatment to address comorbidities and preferences for primary-care patients with a principal anxiety disorder. One hundred participants were recruited through their primary-care contact and randomized to either treatment or an active control group. The treatment consisted of 7–10 weekly individually assigned modules guided by online therapists. At post-treatment, 46% of the treatment group had achieved clinically significant improvement on the primary outcome measure (CORE-OM) and between-group effect sizes at ranged from d = 0.20 to 0.86, with a mean effect of d = 0.59. At one-year follow-up, within-group effect sizes varied between d = 0.53 to 1.00. Cost analysis showed significant reduction of total costs for the ICBT group, the results were maintained at one-year follow-up and the incremental costeffectiveness ratio favored ICBT compared to control group. Individually tailored ICBT is an effective and cost-effective treatment for primary-care patients with anxiety disorders with or without comorbidities.
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- 2014
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106. Personality Change following Internet-Based Cognitive Behavior Therapy for Severe Health Anxiety
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Hedman, Erik, Andersson, Gerhard, Lindefors, Nils, Gustavsson, Petter, Lekander, Mats, Rueck, Christian, Andersson, Erik, Ljotsson, Brjann, Hedman, Erik, Andersson, Gerhard, Lindefors, Nils, Gustavsson, Petter, Lekander, Mats, Rueck, Christian, Andersson, Erik, and Ljotsson, Brjann
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Personality traits have traditionally been viewed as stable, but recent studies suggest that they could be affected through psychological treatment. Internet-based cognitive behavior therapy (ICBT) for severe health anxiety (DSM-IV hypochondriasis) has been shown to be effective in reducing health anxiety, but its effect on measures of personality traits has not been investigated. The main aim of this study was to investigate the impact of ICBT on personality traits in the three broad dimensions -neuroticism, extraversion and aggression. We hypothesized that participants in ICBT would reduce their level of neuroticism compared to controls that did not receive the active treatment. No specific predictions were made regarding extraversion and aggression. Data from a randomized controlled trial were used in which participants were allocated to 12 weeks of ICBT (n=40) or to a basic attention control condition (n=41). Personality traits were assessed with the Swedish Universities Scales of Personality and the primary outcome of health anxiety was the Health Anxiety Inventory. There was a significant interaction effect of group and time on neuroticism-related scales, indicating larger pre-to post-treatment reductions in the Internet-based CBT group compared to the control condition. Analyses at 6-month follow-up showed that changes were stable. Traits relating to extraversion and aggression were largely unchanged. This study is the first to demonstrate that a brief ICBT intervention for severe health anxiety causes long-term changes in measures of personality traits related to neuroticism. The treatment thus has a broader impact than just reducing health anxiety., Funding Agencies|Stockholm County council; Karolinska Institutet
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- 2014
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107. Guided Internet-based vs. face-to-face cognitive behavior therapy for psychiatric and somatic disorders : a systematic review and meta-analysis
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Andersson, Gerhard, Cuijpers, Pim, Carlbring, Per, Riper, Heleen, Hedman, Erik, Andersson, Gerhard, Cuijpers, Pim, Carlbring, Per, Riper, Heleen, and Hedman, Erik
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Internet-delivered cognitive behavior therapy (ICBT) has been tested in many research trials, but to a lesser extent directly compared to face-to-face delivered cognitive behavior therapy (CBT). We conducted a systematic review and meta-analysis of trials in which guided ICBT was directly compared to face-to-face CBT. Studies on psychiatric and somatic conditions were included. Systematic searches resulted in 13 studies (total N=1053) that met all criteria and were included in the review. There were three studies on social anxiety disorder, three on panic disorder, two on depressive symptoms, two on body dissatisfaction, one on tinnitus, one on male sexual dysfunction, and one on spider phobia. Face-to-face CBT was either in the individual format (n=6) or in the group format (n=7). We also assessed quality and risk of bias. Results showed a pooled effect size (Hedges' g) at post-treatment of −0.01 (95% CI: −0.13 to 0.12), indicating that guided ICBT and face-to-face treatment produce equivalent overall effects. Study quality did not affect outcomes. While the overall results indicate equivalence, there are still few studies for each psychiatric and somatic condition and many conditions for which guided ICBT has not been compared to face-to-face treatment. Thus, more research is needed to establish equivalence of the two treatment formats.
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- 2014
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108. Internetbaserad psykologisk behandling : evidens, indikation och praktiskt genomförande
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Hedman, Erik, Carlbring, Per, Ljótsson, Brjánn, Andersson, Gerhard, Hedman, Erik, Carlbring, Per, Ljótsson, Brjánn, and Andersson, Gerhard
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Internetbaserad psykologisk behandling ökar tillgängligheten till vård med god effekt och bidrar samtidigt till förståelsen för vad som är verksamt i psykoterapi. Bokens författare är pionjärer inom området, och delar här med sig av sin erfarenhet från både forskning och klinisk verksamhet. De berättar vad som är centralt vid internetbehandling ur ett terapeutiskt såväl som juridiskt och tekniskt perspektiv: Hur avgör man vilka klienter som är lämpliga? Hur sker kontakten mellan terapeut och klient på ett säkert sätt? Vad utmärker en bra internetbehandlare? De går även igenom de kliniska program som utvecklats för olika ångestsyndrom, depression och beteendemedicinska problem samt evidensläget för respektive diagnos. Boken vänder sig till studerande och yrkesverksamma inom psykoterapi, psykiatri och primärvård.
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- 2014
109. Corporate cash holdings: An empirical study of ownership identities on the Swedish market.
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Persson, James, Hedman, Erik, Persson, James, and Hedman, Erik
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Purpose: The main purpose of this study is to investigate whether different ownership identities has any effect on the levels of cash amongst firms listed on the Stockholm Stock Exchange (SSE) main markets. The examined types of owners are family owners, insider owners and institutional owners. Methodology: A quantitative approach with the interpretation of the results from a panel data regression. Theoretical framework: Agency Theory, Stewardship Theory, Theories related to the determinants of cash holdings, Theory of Ownership Identity Empirical foundation: A sample of 209 firms during the time period 2008-2013 Conclusions: We come to the conclusion that different types of owners have an impact on the cash levels in firms listed on the SSE main markets. Through or regression models we found statistical significant evidence that family owners and insider owners affect corporate cash holdings. The observed relationship between family owners and cash holdings contradicts previous research; besides this the results were in line with previous findings. The relationship between institutionally owned firms and cash holdings are weaker, raising the question whether institutions are as active as they are supposed to be when it comes to monitoring and disciplining of management.
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- 2014
110. Using Early Change to Predict Outcome in Cognitive Behaviour Therapy : Exploring Timeframe, Calculation Method, and Differences of Disorder-Specific versus General Measures
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Schibbye, Peter, Ghaderi, Ata, Ljotsson, Brjann, Hedman, Erik, Lindefors, Nils, Ruck, Christian, Kaldo, Viktor, Schibbye, Peter, Ghaderi, Ata, Ljotsson, Brjann, Hedman, Erik, Lindefors, Nils, Ruck, Christian, and Kaldo, Viktor
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Early change can predict outcome of psychological treatment, especially in cognitive behavior therapy. However, the optimal operationalization of "early change'' for maximizing its predictive ability, and differences in predictive ability of disorder-specific versus general mental health measures has yet to be clarified. This study aimed to investigate how well early change predicted outcome depending on the week it was measured, the calculation method (regression slope or simple subtraction), the type of measures used, and the target disorder. During 10-15 weeks of internet-based cognitive behavior therapy for depression, social anxiety disorder, or panic disorder, weekly ratings were collected through both disorder-specific measures and general measures (Outcome Questionnaire-45 (OQ-45) and Clinical Outcomes in Routine Evaluation-10 (CORE-10)). With outcome defined as the disorder-specific measure, change at week four was the optimal predictor. Slope and subtraction methods performed equally well. The OQ-45 explained 18% of outcome for depression, 14% for social anxiety disorder, and 0% for panic disorder. Corresponding values for CORE-10 were 23%, 29%, and 25%. Specific measures explained 41%, 43%, and 34% respectively: this exceeded the ability of general measures also when they predicted themselves. We conclude that a simple calculation method with a disorder-specific measure at week four seems to provide a good choice for predicting outcome in time-limited cognitive behavior therapy.
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- 2014
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111. Long-term efficacy of Internet-based cognitive behavior therapy for obsessive-compulsive disorder with or without booster : a randomized controlled trial
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Andersson, Erik, Steneby, S., Karlsson, K., Ljotsson, Brjann, Hedman, Erik, Enander, Jesper, Kaldo, Viktor, Andersson, Gerhard, Lindefors, Nils, Ruck, Christian, Andersson, Erik, Steneby, S., Karlsson, K., Ljotsson, Brjann, Hedman, Erik, Enander, Jesper, Kaldo, Viktor, Andersson, Gerhard, Lindefors, Nils, and Ruck, Christian
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Background. As relapse after completed cognitive behavior therapy (CBT) for obsessive-compulsive disorder (OCD) is common, many treatment protocols include booster programs to improve the long-term effects. However, the effects of booster programs are not well studied. In this study, we investigated the long-term efficacy of Internet-based CBT (ICBT) with therapist support for OCD with or without an Internet-based booster program. Method. A total of 101 participants were included in the long-term follow-up analysis of ICBT. Of these, 93 were randomized to a booster program or no booster program. Outcome assessments were collected at 4, 7, 12 and 24 months after receiving ICBT. Results. The entire sample had sustained long-term effects from pre-treatment to all follow-up assessments, with large within-group effect sizes (Cohen's d=1.58-2.09). The booster group had a significant mean reduction in OCD symptoms compared to the control condition from booster baseline (4 months) to 7 months, but not at 12 or 24 months. Participants in the booster group improved significantly in terms of general functioning at 7, 12 and 24 months, and had fewer relapses. Kaplan-Meier analysis also indicated a significantly slower relapse rate in the booster group. Conclusions. The results suggest that ICBT has sustained long-term effects and that adding an Internet-based booster program can further improve long-term outcome and prevent relapse for some OCD patients.
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- 2014
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112. Personality Change following Internet-Based Cognitive Behavior Therapy for Severe Health Anxiety
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Hedman, Erik, primary, Andersson, Gerhard, additional, Lindefors, Nils, additional, Gustavsson, Petter, additional, Lekander, Mats, additional, Rück, Christian, additional, Andersson, Erik, additional, and Ljótsson, Brjánn, additional
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- 2014
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113. Long-term follow-up of internet-delivered exposure and mindfulness based treatment for irritable bowel syndrome
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Ljótsson, Brjánn, Hedman, Erik, Lindfors, Perjohan, Hursti, Timo, Lindefors, Nils, Andersson, Gerhard, and Rück, Christian
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- 2011
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114. ICBT for Severe Health Anxiety.
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Hedman, Erik, Ljótsson, Brjánn, and Lindefors, Nils
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- 2016
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115. Internet-Based Cognitive Behavior Therapy for Social Anxiety Disorder.
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Hedman, Erik, Botella, Cristina, and Berger, Thomas
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- 2016
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116. Datoriserat beslutsstöd vid mätning av dornprofil
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Hedman, Erik
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datoriserat beslutsstöd ,industrimiljö ,dornprofil ,Computer Engineering ,laser ,Datorteknik - Abstract
Behovet att mäta kvalitet hos olika produkter ledde till framställningen av ett antal mätningsmetoder. Redan vid olika stadier av tillverkning kan man avgöra om produkten motsvarar en viss förutbestämd standard. Den här rapporten kommer att undersöka vilka eventuella problem mätning av kvalitet med laser har i industrimiljö. En konceptuell modell över hur mätning av dornprofiler kan genomföras kommer att presenteras med fokus på att väga tidsåtgång mot exakthet för att skapa en balans som är acceptabel för företagets krav. En beslutsfattande algoritm kommer även att presenteras där ett avgörande ska ske om mätresultaten är rimliga eller beror på fel i mätutrustningen. Om mätresultaten är rimliga jämförs de mot referensvärden för att avgöra om produkten klarar kvalitetskraven. Resultatet presenteras i form av ett program som styr hela mätproceduren samt även fattar ett beslut om den aktuella mätningen ska förkastas eller behållas.
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- 2006
117. The mediating effect of mindful non-reactivity in exposure-based cognitive behavior therapy for severe health anxiety.
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Hedman, Erik, Hesser, Hugo, Andersson, Erik, Axelsson, Erland, and Ljótsson, Brjánn
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COGNITIVE therapy , *ANXIETY disorders treatment , *RANDOMIZED controlled trials , *STRESS management , *MEDICAL research - Abstract
Exposure-based cognitive behavior therapy (CBT) has been shown to be effective in the treatment of severe health anxiety, but little is known about mediators of treatment effect. The aim of the present study was to investigate mindful non-reactivity as a putative mediator of health anxiety outcome using data from a large scale randomized controlled trial. We assessed mindful non-reactivity using the Five Facets Mindfulness Questionnaire-Non-Reactivity scale (FFMQ-NR) and health anxiety with the Short Health Anxiety Inventory (SHAI). Participants with severe health anxiety ( N = 158) were randomized to internet-delivered exposure-based CBT or behavioral stress management (BSM) and throughout the treatment, both the mediator and outcome were measured weekly. As previously reported, exposure-based CBT was more effective than BSM in reducing health anxiety. In the present study, latent process growth modeling showed that treatment condition had a significant effect on the FFMQ-NR growth trajectory ( α -path), estimate = 0.18, 95% CI [0.04, 0.32], p = .015, indicating a larger increase in mindful non-reactivity among participants receiving exposure-based CBT compared to the BSM group. The FFMQ-NR growth trajectory was significantly correlated with the SHAI trajectory ( β -path estimate = −1.82, 95% CI [−2.15, −1.48], p < .001. Test of the indirect effect, i.e. the estimated mediation effect ( αβ ) revealed a significant cross product of −0.32, which was statistically significant different from zero based on the asymmetric confidence interval method, 95% CI [−0.59, −0.06]. We conclude that increasing mindful non-reactivity may be of importance for achieving successful treatment outcomes in exposure-based CBT for severe health anxiety. [ABSTRACT FROM AUTHOR]
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- 2017
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118. Extrastriatal dopamine D2-receptor availability in social anxiety disorder.
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Plavén-Sigray, Pontus, Hedman, Erik, Victorsson, Pauliina, Matheson, Granville J., Forsberg, Anton, Djurfeldt, Diana R., Rück, Christian, Halldin, Christer, Lindefors, Nils, and Cervenka, Simon
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ANXIETY disorders , *DOPAMINE receptors , *POSITRON emission tomography , *DRUG accessibility , *PREFRONTAL cortex , *PHYSIOLOGY - Abstract
Alterations in the dopamine system are hypothesized to influence the expression of social anxiety disorder (SAD) symptoms. However, molecular imaging studies comparing dopamine function between patients and control subjects have yielded conflicting results. Importantly, while all previous investigations focused on the striatum, findings from activation and blood flow studies indicate that prefrontal and limbic brain regions have a central role in the pathophysiology. The objective of this study was to investigate extrastriatal dopamine D2-receptor (D2-R) availability in SAD. We examined 12 SAD patients and 16 healthy controls using positron emission tomography and the high-affinity D2-R radioligand [ 11 C]FLB457. Parametric images of D2-R binding potential were derived using the Logan graphical method with cerebellum as reference region. Two-tailed one-way independent ANCOVAs, with age as covariate, were used to examine differences in D2-R availability between groups using both region-based and voxel-wise analyses. The region-based analysis showed a medium effect size of higher D2-R levels in the orbitofrontal cortex (OFC) in patients, although this result did not remain significant after correction for multiple comparisons. The voxel-wise comparison revealed elevated D2-R availability in patients within OFC and right dorsolateral prefrontal cortex after correction for multiple comparisons. These preliminary results suggest that an aberrant extrastriatal dopamine system may be part of the disease mechanism in SAD. [ABSTRACT FROM AUTHOR]
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- 2017
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119. Internet-Based Extinction Therapy for Worry: A Randomized Controlled Trial.
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Andersson, Erik, Hedman, Erik, Wadström, Olle, Boberg, Julia, Andersson, Emil Yaroslav, Axelsson, Erland, Bjureberg, Johan, Hursti, Timo, and Ljótsson, Brjánn
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WORRY , *BEHAVIOR , *EXPOSURE therapy , *HABITUATION (Neuropsychology) , *ANXIETY disorders , *ANXIETY diagnosis , *ANXIETY treatment , *ANXIETY , *BEHAVIOR therapy , *COMPARATIVE studies , *INTERNET , *LONGITUDINAL method , *RESEARCH methodology , *MEDICAL cooperation , *COMPUTERS in medicine , *PSYCHOLOGICAL tests , *QUESTIONNAIRES , *REINFORCEMENT (Psychology) , *RESEARCH , *TELEMEDICINE , *THERAPEUTICS , *EVALUATION research , *RANDOMIZED controlled trials , *TREATMENT effectiveness - Abstract
Worry is a common phenotype in both psychiatric patients and the normal population. Worry can be seen as a covert behavior with primary function to avoid aversive emotional experiences. Our research group has developed a treatment protocol based on an operant model of worry, where we use exposure-based strategies to extinguish the catastrophic worry thoughts. The aim of this study was to test this treatment delivered via the Internet in a large-scale randomized controlled trial. We randomized 140 high-worriers (defined as > 56 on the Penn State Worry Questionnaire [PSWQ]) to either Internet-based extinction therapy (IbET) or to a waiting-list condition (WL). Results showed that IbET was superior to WL with an overall large between-group effect size of d = 1.39 (95% confidence interval [1.04,1.73]) on the PSWQ. In the IbET group, 58% were classified as responders. The corresponding figure for WL participants was 7%. IbET was also superior to the WL on secondary outcome measures of anxiety, depression, meta-cognitions, cognitive avoidance, and quality of life. Overall treatment results were maintained for the IbET group at 4- and 12-month follow-up. The results from this trial are encouraging as they indicate that worry can be targeted with an accessible and novel intervention for worry. Replication trials with active control group are needed. [ABSTRACT FROM AUTHOR]
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- 2017
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120. Testing the Mediating Effects of Obsessive Beliefs in Internet-Based Cognitive Behaviour Therapy for Obsessive-Compulsive Disorder: Results from a Randomized Controlled Trial
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Andersson, Erik, primary, Ljótsson, Brjánn, additional, Hedman, Erik, additional, Hesser, Hugo, additional, Enander, Jesper, additional, Kaldo, Viktor, additional, Andersson, Gerhard, additional, Lindefors, Nils, additional, and Rück, Christian, additional
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- 2014
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121. Guided Internet-based vs. face-to-face cognitive behavior therapy for psychiatric and somatic disorders: a systematic review and meta-analysis
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Andersson, Gerhard, primary, Cuijpers, Pim, additional, Carlbring, Per, additional, Riper, Heleen, additional, and Hedman, Erik, additional
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- 2014
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122. Effects of Baseline Problematic Alcohol and Drug Use on Internet-Based Cognitive Behavioral Therapy Outcomes for Depression, Panic Disorder and Social Anxiety Disorder
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Gajecki, Mikael, primary, Berman, Anne H., additional, Sinadinovic, Kristina, additional, Andersson, Claes, additional, Ljótsson, Brjánn, additional, Hedman, Erik, additional, Rück, Christian, additional, and Lindefors, Nils, additional
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- 2014
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123. Using Early Change to Predict Outcome in Cognitive Behaviour Therapy: Exploring Timeframe, Calculation Method, and Differences of Disorder-Specific versus General Measures
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Schibbye, Peter, primary, Ghaderi, Ata, additional, Ljótsson, Brjánn, additional, Hedman, Erik, additional, Lindefors, Nils, additional, Rück, Christian, additional, and Kaldo, Viktor, additional
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- 2014
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124. Tu2006 Internet-Delivered Cognitive Behavior Therapy for Adolescents With Functional Gastrointestinal Disorders: A Pilot Study
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Bonnert, Marianne, primary, Ljótsson, Brjánn, additional, Hedman, Erik, additional, Serlachius, Eva, additional, Simren, Magnus, additional, Benninga, Marc A., additional, and Olen, Ola, additional
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- 2014
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125. Prediction of symptomatic improvement after exposure-based treatment for irritable bowel syndrome
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Ljotsson, Brjann, Andersson, Erik, Lindfors, Perjohan, Lackner, Jeffrey M., Grönberg, Karin, Molin, Katarina, Norén, Johanna, Romberg, Karin, Andersson, Evelyn, Hursti, Timo, Hesser, Hugo, Hedman, Erik, Ljotsson, Brjann, Andersson, Erik, Lindfors, Perjohan, Lackner, Jeffrey M., Grönberg, Karin, Molin, Katarina, Norén, Johanna, Romberg, Karin, Andersson, Evelyn, Hursti, Timo, Hesser, Hugo, and Hedman, Erik
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Background: Several studies show that psychological treatments relieve symptoms for patients suffering from irritable bowel syndrome (IBS). However, there are no consistent findings that show what patient characteristics make a psychological treatment more or less likely to result in improvement. We have previously conducted a study of a newly developed internet-delivered cognitive behavioral therapy (ICBT) that emphasized exposure to IBS symptoms and IBS-related situations and reduced symptom-related avoidance. The study showed that the treatment led to improvement in IBS symptoms compared to a waiting list and that treatment gains were maintained over a 15-18 month follow-up period. The aim of the present study was to investigate several possible predictors of short-and long-term treatment outcome in terms of symptom improvement, based on data collected in the previously conducted treatment trial. Methods: Demographics, comorbid psychological distress, IBS-related fear and avoidance behaviors, and IBS-related disability were investigated as predictors of treatment outcome in the sample consisting of 79 participants diagnosed with IBS who had undergone 10 weeks of ICBT. Predictors that were significantly correlated with symptom levels at post-treatment and follow-up were entered into multiple regression analyses that controlled for pre-treatment symptom levels. Results: There were measures within each domain, i.e., comorbid psychological distress, IBS-related fear and avoidance behaviors, and IBS-related disability, with the exception of demographic data, that were correlated with the symptom levels at post-treatment and follow-up. However, when these were entered into a multiple regression analyses that controlled for pre-treatment levels, none remained a significant predictor of the post-treatment and follow-up symptomatic status. Conclusions: The study did not find any individual characteristics that made patients more or less likely to respond to the exposure-b
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- 2013
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126. Genetic polymorphisms in monoamine systems and outcome of cognitive behavior therapy for social anxiety disorder
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Andersson, Evelyn, Rück, Christian, Lavebratt, Catharina, Hedman, Erik, Schalling, Martin, Lindefors, Nils, Eriksson, Elias, Carlbring, Per, Andersson, Gerhard, Furmark, Tomas, Andersson, Evelyn, Rück, Christian, Lavebratt, Catharina, Hedman, Erik, Schalling, Martin, Lindefors, Nils, Eriksson, Elias, Carlbring, Per, Andersson, Gerhard, and Furmark, Tomas
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OBJECTIVE: The role of genetics for predicting the response to cognitive behavior therapy (CBT) for social anxiety disorder (SAD) has only been studied in one previous investigation. The serotonin transporter (5-HTTLPR), the catechol-o-methyltransferase (COMT) val158met, and the tryptophan hydroxylase-2 (TPH2) G-703Tpolymorphisms are implicated in the regulation of amygdala reactivity and fear extinction and therefore might be of relevance for CBT outcome. The aim of the present study was to investigate if these three gene variants predicted response to CBT in a large sample of SAD patients. METHOD: Participants were recruited from two separate randomized controlled CBT trials (trial 1: n = 112, trial 2: n = 202). Genotyping were performed on DNA extracted from blood or saliva samples. Effects were analyzed at follow-up (6 or 12 months after treatment) for both groups and for each group separately at post-treatment. The main outcome measure was the Liebowitz Social Anxiety Scale Self-Report. RESULTS: At long-term follow-up, there was no effect of any genotype, or gene × gene interactions, on treatment response. In the subsamples, there was time by genotype interaction effects indicating an influence of the TPH2 G-703T-polymorphism on CBT short-term response, however the direction of the effect was not consistent across trials. CONCLUSIONS: None of the three gene variants, 5-HTTLPR, COMTval158met and TPH2 G-703T, was associated with long-term response to CBT for SAD.
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- 2013
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127. Telephone versus internet administration of self-report measures of social anxiety, depressive symptoms, and insomnia : psychometric evaluation of a method to reduce the impact of missing data
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Hedman, Erik, Ljótsson, Brjánn, Blom, Kerstin, El Alaoui, Samir, Kraepelien, Martin, Rück, Christian, Andersson, Gerhard, Svanborg, Cecilia, Lindefors, Nils, Kaldo, Viktor, Hedman, Erik, Ljótsson, Brjánn, Blom, Kerstin, El Alaoui, Samir, Kraepelien, Martin, Rück, Christian, Andersson, Gerhard, Svanborg, Cecilia, Lindefors, Nils, and Kaldo, Viktor
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BACKGROUND: Internet-administered self-report measures of social anxiety, depressive symptoms, and sleep difficulties are widely used in clinical trials and in clinical routine care, but data loss is a common problem that could render skewed estimates of symptom levels and treatment effects. One way of reducing the negative impact of missing data could be to use telephone administration of self-report measures as a means to complete the data missing from the online data collection. OBJECTIVE: The aim of the study was to compare the convergence of telephone and Internet administration of self-report measures of social anxiety, depressive symptoms, and sleep difficulties. METHODS: The Liebowitz Social Anxiety Scale-Self-Report (LSAS-SR), Montgomery-Åsberg Depression Rating Scale-Self-Rated (MADRS-S), and the Insomnia Severity Index (ISI) were administered over the telephone and via the Internet to a clinical sample (N=82) of psychiatric patients at a clinic specializing in Internet-delivered treatment. Shortened versions of the LSAS-SR and the ISI were used when administered via telephone. RESULTS: As predicted, the results showed that the estimates produced by the two administration formats were highly correlated (r=.82-.91; P<.001) and internal consistencies were high in both administration formats (telephone: Cronbach alpha=.76-.86 and Internet: Cronbach alpha=.79-.93). The correlation coefficients were similar across questionnaires and the shorter versions of the questionnaires used in the telephone administration of the LSAS-SR and ISI performed in general equally well compared to when the full scale was used, as was the case with the MADRS-S. CONCLUSIONS: Telephone administration of self-report questionnaires is a valid method that can be used to reduce data loss in routine psychiatric practice as well as in clinical trials, thereby contributing to more accurate symptom estimates.
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- 2013
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128. Mediators in Internet-Based Cognitive Behavior Therapy for Severe Health Anxiety
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Hedman, Erik, Andersson, Erik, Andersson, Gerhard, Lindefors, Nils, Lekander, Mats, Ruck, Christian, Ljotsson, Brjann, Hedman, Erik, Andersson, Erik, Andersson, Gerhard, Lindefors, Nils, Lekander, Mats, Ruck, Christian, and Ljotsson, Brjann
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According to the cognitive behavioral model of severe health anxiety (hypochondriasis) four central maintaining mechanisms are how the individual perceives the risk of disease and how negative its consequences would be, attention to bodily sensations, and intolerance of uncertainty. The aim of the present study was to investigate the mediating role of these putative mechanisms in Internet-delivered CBT for severe health anxiety. We analyzed data from an RCT where participants were randomized to Internet-delivered CBT (n=40) or to a control condition (n=41). Mediators and outcome, i.e. health anxiety, were assessed weekly throughout the treatment, enabling fulfillment of the criterion of temporal precedence of changes occurring in the mediator in relation to the outcome to be met. The results showed that reduced perceived risk of disease, less attention to bodily symptoms, and reduced intolerance of uncertainty significantly mediated improvement in health anxiety. The study supports the validity of the cognitive behavioral model of health anxiety. The findings have theoretical and clinical implications as they indicate processes that may be causally related to the improvements observed after CBT for health anxiety., Funding Agencies|Karolinska Institutet||Stockholm County Council
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- 2013
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129. Predictors and moderators of internet- and group-based cognitive behaviour therapy for panic disorder
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El Alaoui, Samir, Hedman, Erik, Ljótsson, Brjánn, Bergström, Jan, Andersson, Erik, Rück, Christian, Andersson, Gerhard, Lindefors, Nils, El Alaoui, Samir, Hedman, Erik, Ljótsson, Brjánn, Bergström, Jan, Andersson, Erik, Rück, Christian, Andersson, Gerhard, and Lindefors, Nils
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Internet-based cognitive behaviour therapy (ICBT) can be equally effective as traditional face-to-face cognitive behaviour therapy (CBT) for treating panic disorder (PD). However, little is known about the predictors and moderators of outcome of ICBT when delivered in psychiatric outpatient settings. This study investigated a selection of outcome predictors and moderators of ICBT for panic disorder based on data from a randomised controlled trial where therapist-guided ICBT was compared with group CBT (GCBT) for panic disorder. Participants (N = 104) received 10 weeks of ICBT or GCBT and were assessed before and after treatment, and after six months. Multiple regression analyses were used to test for significant predictors of treatment outcome. Predictors of positive treatment response for both modalities were having low levels of symptom severity and work impairment. In addition, anxiety sensitivity was found to have a small negative relationship with treatment outcome, suggesting that anxiety sensitivity may slightly enhance treatment response. Treatment modality had a moderating effect on the relationship between domestic impairment and outcome and on the relationship between initial age of onset of panic symptoms and treatment outcome, favouring ICBT for patients having had an early onset of PD symptoms and for patients having a high domestic functional impairment. These results suggest that both ICBT and GCBT are effective treatment modalities for PD and that it is possible to predict a significant proportion of the long-term outcome variance based on clinical variables.
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- 2013
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130. Guided Internet-Based CBT for Common Mental Disorders
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Andersson, Gerhard, Carlbring, Per, Ljótsson, Brjánn, Hedman, Erik, Andersson, Gerhard, Carlbring, Per, Ljótsson, Brjánn, and Hedman, Erik
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The Internet has become a part of most people’s lives in many parts of the world. Since the late 1990s there has been an intensive research activity in which psychological treatments, such as cognitive behavior therapy (CBT), have been found to be effective when delivered via the Internet. Most research studies indicate that the effects are larger when some form of guidance is provided from a therapist, and unguided treatments tend to lead to more dropout and smaller effects. Guided Internet treatments often consists of book length text materials, but can also include other components such as audio files and video clips. Homework assignment is often included and feedback is given for completed homework. Guided Internet-based CBT (iCBT) has been found to work for problems such as depression, panic-, social anxiety-, and generalized anxiety disorders. There are many research trials in which participants have been recruited via media, and there has been less research conducted in representative clinical settings. Most research has been conducted on adults and in university settings with nationwide recruitment. There is a need for treatments and studies on older adults, children and adolescents. In conclusion, dissemination of the research findings on guided iCBT to regular clinical settings is warranted.
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- 2013
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131. Shame and Guilt in Social Anxiety Disorder : Effects of Cognitive Behavior Therapy and Association with Social Anxiety and Depressive Symptoms
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Hedman, Erik, Ström, Peter, Stünkel, Angela, Mörtberg, Ewa, Hedman, Erik, Ström, Peter, Stünkel, Angela, and Mörtberg, Ewa
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Social anxiety disorder (SAD), characterized by fear of being scrutinized by others, has features that that are closely linked to the concept of shame. Despite this, it remains to be investigated whether shame is elevated in persons with SAD, and if cognitive behavior therapy (CBT) for SAD could reduce shame experience. In the present study, we focused on internal shame, i.e. the type of shame that pertains to how we judge ourselves. Although guilt is distinctly different from shame, we also viewed it as important to investigate its role in SAD as the two emotions are highly correlated. The aim of this study was to investigate: (I) if persons with SAD differ from healthy controls on shame and guilt, (II) if shame, guilt, depressive symptoms, and social anxiety are associated in persons with SAD, and (III) if CBT can reduce internal shame in patients with SAD. Firstly, we conducted a case-control study comparing a sample with SAD (n = 67) with two samples of healthy controls, a main sample (n = 72) and a replication sample (n = 22). Secondly, all participants with SAD were treated with CBT and shame, measured with the Test of Self-Conscious affect, was assessed before and after treatment. The results showed that shame was elevated in person with SAD compared to the control replication sample, but not to the main control sample. In addition, shame, social anxiety, and depressive symptoms were significantly associated among participants with SAD. After CBT, participants with SAD had significantly reduced their shame (Cohen's d = 0.44). Guilt was unrelated to social anxiety. We conclude that shame and social anxiety are associated and that it is likely that persons with SAD are more prone to experience shame than persons without SAD. Also, CBT is associated with shame reduction in the treatment of SAD., AuthorCount:4
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- 2013
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132. Företagsförvärv eller företagsfördärv? - En långsiktig studie på den skandinaviska förvärvsmarknaden
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Hedman, Erik, Norrman, Anton, Walin, Axel, Hedman, Erik, Norrman, Anton, and Walin, Axel
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The purpose of this thesis is to, through statistical analysis, investigate whether the stock price of Scandinavian acquiring firms develops differently compared to benchmark. The thesis also researches if a set of variables can explain the eventual difference. This thesis is of quantitative nature and the authors have used a deductive approach. Through a regression analysis the thesis secondary data has been analyzed and compared to earlier research and theories. The theory of this thesis is mainly based on earlier research about the effect that different variables have on an acquiring companies stock prices. The majority of this research mainly comes from the American market and studies a different time period than this thesis. The thesis’ empirical evidence is based on data from 54 acquiring firms between 2003-2008. Nine independent variables has been tested on these companies. This thesis finds that acquiring firms significantly underperforms compared to benchmark on both a 24- and 36-month basis. The thesis also finds that the underperformance can be explained by one of the nine variables.
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- 2013
133. Effectiveness of Guided Internet-Based Cognitive Behavior Therapy in Regular Clinical Settings
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Andersson, Gerhard, Hedman, Erik, Andersson, Gerhard, and Hedman, Erik
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Therapist-guided internet-based cognitive behavior therapy (ICBT) has been tested in numerous controlled trials conducted in research settings. It is now established that this novel treatment format works for a range of clinical conditions. It is less well known if the promising results from efficacy studies can be transferred to routine clinical practice. In this paper we review the evidence from effectiveness studies and highlight challenges when implementing ICBT. Following literature searches we identified 4 controlled trials and 8 open studies, involving a total of 3,888 patients. There is now an increasing number of effectiveness studies on ICBT with studies on panic disorder, social anxiety disorder, generalized anxiety disorder, post-traumatic stress disorder, depression, tinnitus, and irritable bowel syndrome. All indicate that it is possible to transfer ICBT to clinical practice with sustained effects and moderate to large effect sizes. However, it is not clear which model to use for service delivery, and more work remains to be done on dissemination of ICBT. Moreover, the knowledge about outcome predictors from controlled efficacy trials is probably less relevant, and studies with large clinically representative samples are needed to investigate for which patients ICBT is suitable. In this work existing data could be combined and reanalyzed to study predictors of outcome., Funding Agencies|Swedish council for working and life research||Swedish research council||Linkoping University
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- 2013
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134. Internet-based cognitive behaviour therapy for obsessive-compulsive disorder : a randomized controlled trial
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Andersson, Erik, Enander, Jesper, Andrén, Per, Hedman, Erik, Ljótsson, Brjánn, Hursti, Timo, Bergström, Jan, Kaldo, Viktor, Lindefors, Nils, Andersson, Gerhard, Rück, Christian, Andersson, Erik, Enander, Jesper, Andrén, Per, Hedman, Erik, Ljótsson, Brjánn, Hursti, Timo, Bergström, Jan, Kaldo, Viktor, Lindefors, Nils, Andersson, Gerhard, and Rück, Christian
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Background Cognitive behaviour therapy (CBT) is an effective treatment for obsessive–compulsive disorder (OCD) but access to CBT is limited. Internet-based CBT (ICBT) with therapist support is potentially a more accessible treatment. There are no randomized controlled trials testing ICBT for OCD. The aim of this study was to investigate the efficacy of ICBT for OCD in a randomized controlled trial. Method Participants (n=101) diagnosed with OCD were randomized to either 10 weeks of ICBT or to an attention control condition, consisting of online supportive therapy. The primary outcome measure was the Yale–Brown Obsessive Compulsive Scale (YBOCS) administered by blinded assessors. Results Both treatments lead to significant improvements in OCD symptoms, but ICBT resulted in larger improvements than the control condition on the YBOCS, with a significant between-group effect size (Cohen's d) of 1.12 (95% CI 0.69–1.53) at post-treatment. The proportion of participants showing clinically significant improvement was 60% (95% CI 46–72) in the ICBT group compared to 6% (95% CI 1–17) in the control condition. The results were sustained at follow-up. Conclusions ICBT is an efficacious treatment for OCD that could substantially increase access to CBT for OCD patients. Replication studies are warranted.
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- 2012
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135. Social fobi : ingen vanlig blyghet
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Furmark, Tomas, Hedman, Erik, Tillfors, Maria, Ekselius, Lisa, Furmark, Tomas, Hedman, Erik, Tillfors, Maria, and Ekselius, Lisa
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Social fobi innebär att plågas av ångest iumgänget med andra eller vid framträdanden.Problemet kan vara mycket handikappande,och många drabbade får inteeffektiv behandling.
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- 2011
136. Internet-Delivered Exposure-Based Treatment vs. Stress Management for Irritable Bowel Syndrome : A Randomized Trial
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Ljotsson, Brjann, Hedman, Erik, Andersson, Erik, Hesser, Hugo, Lindfors, Perjohan, Hursti, Timo, Rydh, Sara, Ruck, Christian, Lindefors, Nils, Andersson, Gerhard, Ljotsson, Brjann, Hedman, Erik, Andersson, Erik, Hesser, Hugo, Lindfors, Perjohan, Hursti, Timo, Rydh, Sara, Ruck, Christian, Lindefors, Nils, and Andersson, Gerhard
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OBJECTIVES: Our research group has developed an internet-delivered cognitive behavioral treatment (ICBT) for irritable bowel syndrome (IBS). We compared ICBT with internet-delivered stress management (ISM) for IBS to assess whether the effects of ICBT are specific. METHODS: This was a randomized controlled trial, including 195 self-referred participants diagnosed with IBS. The treatment interventions lasted for 10 weeks and included an online therapist contact. The ICBT emphasized acceptance of symptoms through exposure to IBS symptoms and related negative feelings. The ICBT also included mindfulness training. The ISM emphasized symptom control through relaxation techniques, dietary adjustments, and problem-solving skills. Severity of IBS symptoms was measured with the gastrointestinal symptom rating scale-IBS version (GSRS-IBS). Credibility of the treatments and expectancy of improvement were assessed with the treatment credibility scale. The participants' perceived therapeutic alliance with their online therapist was measured with the working alliance inventory. RESULTS: At post-treatment and 6-month follow-up, 192 (99%) and 169 (87%) participants returned data, respectively. At post-treatment and 6-month follow-up, we found significant differences on the GSRS-IBS, favoring ICBT. The difference on GSRS-IBS scores was 4.8 (95% confidence interval (CI): 1.2-8.4) at post-treatment and 5.9 (95% CI: 1.9-9.9) at 6-month follow-up. There were no significant differences on the treatment credibility scale or the working alliance inventory between the groups. CONCLUSIONS: Internet-delivered CBT has specific effects that cannot be attributed only to treatment credibility, expectancy of improvement, therapeutic alliance, or attention. Furthermore, a treatment based on exposure exercises specifically tailored for IBS may be a better treatment option than general stress and symptom management for IBS patients. ICBT is a promising treatment modality for IBS as it can be offered
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- 2011
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137. A 5-Year Follow-up of Internet-Based Cognitive Behavior Therapy for Social Anxiety Disorder
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Hedman, Erik, Furmark, Tomas, Carlbring, Per, Ljotsson, Brjann, Ruck, Christian, Lindefors, Nils, Andersson, Gerhard, Hedman, Erik, Furmark, Tomas, Carlbring, Per, Ljotsson, Brjann, Ruck, Christian, Lindefors, Nils, and Andersson, Gerhard
- Abstract
Background: Internet-based cognitive behavior therapy (CBT) has been shown to be a promising method to disseminate cognitive behavior therapy for social anxiety disorder (SAD). Several trials have demonstrated that Internet-based CBT can be effective for SAD in the shorter term. However, the long-term effects of Internet-based CBT for SAD are less well known. Objective: Our objective was to investigate the effect of Internet-based CBT for SAD 5 years after completed treatment. Method: We conducted a 5-year follow-up study of 80 persons with SAD who had undergone Internet-based CBT. The assessment comprised a diagnostic interview and self-report questionnaires. The main outcome measure was the Liebowitz Social Anxiety Scale-Self-Report (LSAS-SR). Additional measures of social anxiety were the Social Interaction Anxiety Scale (SIAS) and the Social Phobia Scale (SPS). Attrition rates were low: 89% (71/80) of the participants completed the diagnostic interview and 80% (64/80) responded to the questionnaires. Results: Mixed-effect models analysis showed a significant effect of time on the three social anxiety measures, LSAS-SR, SIAS, and SPS (F(3,98-102) = 16.05 -29.20, P < .001) indicating improvement. From baseline to 5-year follow-up, participants' mean scores on the LSAS-SR were reduced from 71.3 (95% confidence interval [CI] 66.1-76.5) to 40.3 (95% CI 35.2 - 45.3). The effect sizes of the LSAS-SR were large (Cohen's d range 1.30 - 1.40, 95% CI 0.77 - 1.90). Improvements gained at the 1-year follow-up were sustained 5 years after completed treatment. Conclusions: Internet-based CBT for SAD is a treatment that can result in large and enduring effects.
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- 2011
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138. Acceptability, effectiveness, and cost-effectiveness of internet-based exposure treatment for irritable bowel syndrome in a clinical sample: a randomized controlled trial
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Ljotsson, Brjann, Andersson, Gerhard, Andersson, Erik, Hedman, Erik, Lindfors, Perjohan, Andreewitch, Sergej, Ruck, Christian, Lindefors, Nils, Ljotsson, Brjann, Andersson, Gerhard, Andersson, Erik, Hedman, Erik, Lindfors, Perjohan, Andreewitch, Sergej, Ruck, Christian, and Lindefors, Nils
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Background: Internet-based cognitive behavior therapy (ICBT) has shown promising effects in the treatment of irritable bowel syndrome (IBS). However, to date no study has used a design where participants have been sampled solely from a clinical population. We aimed to investigate the acceptability, effectiveness, and cost-effectiveness of ICBT for IBS using a consecutively recruited sample from a gastroenterological clinic. less thanbrgreater than less thanbrgreater thanMethods: Sixty-one patients were randomized to 10 weeks of ICBT (n = 30) or a waiting list control (n = 31). The ICBT was guided by an online therapist and emphasized acceptance of symptoms through exposure and mindfulness training. Severity of IBS symptoms was measured with the Gastrointestinal symptom rating scale - IBS version (GSRS-IBS). Patients in both groups were assessed at pre- and post-treatment while only the ICBT group was assessed 12 months after treatment completion. Health economic data were also gathered at all assessment points and analyzed using bootstrap sampling. less thanbrgreater than less thanbrgreater thanResults: Fifty of 61 patients (82%) completed the post-treatment assessment and 20 of 30 patients (67%) in the ICBT group were assessed at 12-month follow-up. The ICBT group demonstrated significantly (p andlt; .001) larger improvements on the IBS-related outcome scales than the waiting list group. The between group effect size on GSRS-IBS was Cohens d = 0.77 (95% CI: 0.19-1.34). Similar effects were noted on measures of quality of life and IBS-related fear and avoidance behaviors. Improvements in the ICBT group were maintained at 12-month follow-up. The ICBT condition was found to be more cost-effective than the waiting list, with an 87% chance of leading to reduced societal costs combined with clinical effectiveness. The cost-effectiveness was sustained over the 12-month period. less thanbrgreater than less thanbrgreater thanConclusions: ICBT proved to be a cost-effective t, Funding Agencies|Stockholm City Council||Stockholm Centre for Psychiatry Research, Linkoping University||Soderstrom-Konigska Foundation||Bror Gadelius Foundation
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- 2011
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139. Internet-based cognitive behavior therapy for obsessive compulsive disorder: A pilot study
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Andersson, Erik, Ljotsson, Brjann, Hedman, Erik, Kaldo, Viktor, Paxling, Björn, Andersson, Gerhard, Lindefors, Nils, Ruck, Christian, Andersson, Erik, Ljotsson, Brjann, Hedman, Erik, Kaldo, Viktor, Paxling, Björn, Andersson, Gerhard, Lindefors, Nils, and Ruck, Christian
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Background: Cognitive behavior therapy (CBT) is widely regarded as an effective treatment for obsessive compulsive disorder (OCD), but access to CBT therapists is limited. Internet-based CBT (ICBT) with therapist support is a way to increase access to CBT but has not been developed or tested for OCD. The aim of this study was to evaluate ICBT for OCD. less thanbrgreater than less thanbrgreater thanMethod: An open trial where patients (N = 23) received a 15-week ICBT program with therapist support consisting of psychoeducation, cognitive restructuring and exposure with response prevention. The primary outcome was the Yale-Brown Obsessive Compulsive Scale (Y-BOCS), which was assessed by a psychiatrist before and immediately after treatment. Secondary outcomes were self-rated measures of OCD symptoms, depressive symptoms, general functioning, anxiety and quality of life. All assessments were made at baseline and post-treatment. less thanbrgreater than less thanbrgreater thanResults: All participants completed the primary outcome measure at all assessment points. There were reductions in OCD symptoms with a large within-group effect size (Cohens d = 1.56). At post-treatment, 61% of participants had a clinically significant improvement and 43% no longer fulfilled the diagnostic criteria of OCD. The treatment also resulted in statistically significant improvements in self-rated OCD symptoms, general functioning and depression. less thanbrgreater than less thanbrgreater thanConclusions: ICBT with therapist support reduces OCD symptoms, depressive symptoms and improves general functioning. Randomized trials are needed to confirm the effectiveness of this new treatment format., Funding Agencies|Swedish Research Council||Soderstromska-Konigska Foundation||Stockholm County Council
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- 2011
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140. Cost-effectiveness of internet-based cognitive behavior therapy for irritable bowel syndrome: results from a randomized controlled trial
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Andersson, Erik, Ljotsson, Brjann, Smit, Filip, Paxling, Björn, Hedman, Erik, Lindefors, Nils, Andersson, Gerhard, Ruck, Christian, Andersson, Erik, Ljotsson, Brjann, Smit, Filip, Paxling, Björn, Hedman, Erik, Lindefors, Nils, Andersson, Gerhard, and Ruck, Christian
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Background: Irritable Bowel Syndrome (IBS) is highly prevalent and is associated with a substantial economic burden. Cognitive behavior therapy (CBT) has been shown to be effective in treating IBS. The aim of this study was to evaluate the cost-effectiveness of a new treatment alternative, internet-delivered CBT based on exposure and mindfulness exercises. Methods: Participants (N = 85) with IBS were recruited through self-referral and were assessed via a telephone interview and self-report measures on the internet. Participants were randomized to internet-delivered CBT or to a discussion forum. Economic data was assessed at pre-, post- and at 3-month and 1 year follow-up. Results: Significant cost reductions were found for the treatment group at $16,806 per successfully treated case. The cost reductions were mainly driven by reduced work loss in the treatment group. Results were sustained at 3-month and 1 year follow-up. Conclusions: Internet-delivered CBT appears to generate health gains in IBS treatment and is associated with cost-savings from a societal perspective., Original Publication:Erik Andersson, Brjann Ljotsson, Filip Smit, Björn Paxling, Erik Hedman, Nils Lindefors, Gerhard Andersson and Christian Ruck, Cost-effectiveness of internet-based cognitive behavior therapy for irritable bowel syndrome: results from a randomized controlled trial, 2011, BMC PUBLIC HEALTH, (11), 215.http://dx.doi.org/10.1186/1471-2458-11-215Licensee: BioMed Centralhttp://www.biomedcentral.com
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- 2011
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141. Internet-Based Cognitive Behavior Therapy vs. Cognitive Behavioral Group Therapy for Social Anxiety Disorder: A Randomized Controlled Non-inferiority Trial
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Hedman, Erik, Andersson, Gerhard, Ljotsson, Brjann, Andersson, Erik, Ruck, Christian, Mortberg, Ewa, Lindefors, Nils, Hedman, Erik, Andersson, Gerhard, Ljotsson, Brjann, Andersson, Erik, Ruck, Christian, Mortberg, Ewa, and Lindefors, Nils
- Abstract
Background and Aims: Cognitive behavioral group therapy (CBGT) is an effective, well-established, but not widely available treatment for social anxiety disorder (SAD). Internet-based cognitive behavior therapy (ICBT) has the potential to increase availability and facilitate dissemination of therapeutic services for SAD. However, ICBT for SAD has not been directly compared with in-person treatments such as CBGT and few studies investigating ICBT have been conducted in clinical settings. Our aim was to investigate if ICBT is at least as effective as CBGT for SAD when treatments are delivered in a psychiatric setting. Methods: We conducted a randomized controlled non-inferiority trial with allocation to ICBT (n = 64) or CBGT (n = 62) with blinded assessment immediately following treatment and six months post-treatment. Participants were 126 individuals with SAD who received CBGT or ICBT for a duration of 15 weeks. The Liebowitz Social Anxiety Scale (LSAS) was the main outcome measure. The following non-inferiority margin was set: following treatment, the lower bound of the 95 % confidence interval (CI) of the mean difference between groups should be less than 10 LSAS-points. Results: Both groups made large improvements. At follow-up, 41 (64%) participants in the ICBT group were classified as responders (95% CI, 52%-76%). In the CBGT group, 28 participants (45%) responded to the treatment (95% CI, 33%-58%). At post-treatment and follow-up respectively, the 95 % CI of the LSAS mean difference was 0.68-17.66 (Cohens d between group = 0.41) and -22.51-15.69 (Cohens d between group = 0.36) favoring ICBT, which was well within the non-inferiority margin. Mixed effects models analyses showed no significant interaction effect for LSAS, indicating similar improvement across treatments (F = 1.58; df = 2, 219; p = .21). Conclusions: ICBT delivered in a psychiatric setting can be as effective as CBGT in the treatment of SAD and could be used to increase availability to CBT., Original Publication:Erik Hedman, Gerhard Andersson, Brjann Ljotsson, Erik Andersson, Christian Ruck, Ewa Mortberg and Nils Lindefors, Internet-Based Cognitive Behavior Therapy vs. Cognitive Behavioral Group Therapy for Social Anxiety Disorder: A Randomized Controlled Non-inferiority Trial, 2011, PLOS ONE, (6), 3, .http://dx.doi.org/10.1371/journal.pone.0018001Licensee: Public Library of Science (PLoS)http://www.plos.org
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- 2011
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142. Internet-based cognitive behaviour therapy for social anxiety disorder : from efficacy to effectiveness
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Hedman, Erik and Hedman, Erik
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Background: Cognitive behaviour therapy (CBT) is an effective, well-established, but not widely available treatment for social anxiety disorder (SAD). Internet-based cognitive behavior therapy (ICBT) has the potential to increase availability and facilitate dissemination of therapeutic services for SAD. However, research is needed to establish efficacy, effectiveness, long-term effects, cost-effectiveness and potential determinants of treatment outcome. Aims: The present thesis aimed at investigating the following: a) The efficacy of ICBT for SAD in a university setting (Study I), b) the effectiveness of ICBT for SAD in a psychiatric setting (Study II), c) The effects of ICBT for SAD over 5 years (Study III), d) The cost-effectiveness of ICBT for SAD compared to conventional CBT (Study IV), and e) Clinical and genetic determinants of ICBT for SAD in relation to conventional CBT (Study V). Methods: Two large scale randomised controlled trials (RCTs) were conducted. In the first RCT (Study I), ICBT (n=40) was compared to CBT bibliotherapy (n=40) and a waiting list control (n=40). The second RCT (Study II) was a non-inferiority trial comparing ICBT (n=64) to cognitive behavioural group therapy (CBGT; n=62) in a clinical setting. In Study III, a 5-year follow-up assessment was conducted of participants of Study I. In Study IV, a prospective cost-effectiveness and cost-utility analysis of ICBT compared to CBGT was conducted using a societal perspective. Based on clinical and genetic data collected in Study II, predictors and moderators of treatment outcome of ICBT in relation to CBGT were investigated in Study V. Results: Study I: ICBT for SAD yielded large effect sizes on measures of social anxiety and demonstrated superiority to waiting list controls and a trend towards superiority of CBT bibliotherapy. Study II: ICBT for SAD was well within the non- inferiority margin compared to CBGT on the primary outcome measure. Study III: Participants receiving ICBT for SAD made
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- 2011
143. Effectiveness and cost offset analysis of group CBT for hypochondriasis delivered in a psychiatric setting : an open trial.
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Hedman, Erik, Ljótsson, Brjánn, Andersson, Erik, Rück, Christian, Andersson, Gerhard, Lindefors, Nils, Hedman, Erik, Ljótsson, Brjánn, Andersson, Erik, Rück, Christian, Andersson, Gerhard, and Lindefors, Nils
- Abstract
Hypochondriasis is highly prevalent in medical settings, has detrimental effects for affected individuals, and is associated with high societal costs. Although cognitive behavior therapy (CBT) has been shown to be effective in the treatment of hypochondriasis, it is not widely available because of a lack of properly trained therapists. Therefore, it is essential to evaluate therapy forms that require less therapist time. The authors investigated the effect and economic impact of group CBT delivered in a psychiatric setting among 24 people with hypochondriasis. A within-group design with prolonged baseline was used, and all participants received 10 weeks of group-based treatment. The primary outcome measures were the Health Anxiety Inventory and the Illness Attitude Scales. Results indicate significant improvement on both measures at posttreatment and 6-month follow-up (Cohen's d = 1.03-1.72). Medical and nonmedical costs were substantially lowered. The authors conclude that group-based CBT delivered in a psychiatric setting is an effective and potentially highly cost-effective treatment for hypochondriasis.
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- 2010
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144. Glucocorticoid receptor function : interactions, mutants and ligand responses
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Hedman, Erik and Hedman, Erik
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The protein that is investigated in this thesis is the glucocorticoid receptor (GR), which belongs to the nuclear hormone receptor superfamily of ligand activated transcription factors. The nuclear receptors share three conserved structural domains, the N-terminal transactivating domain, the central DNA-binding domain and the C-terminal ligand-binding domain. Glucocorticoids are well known for their anti-inflammatory and apoptotic effects and are therefore used as treatment for a multitude of diseases including, asthma, rheumatoid arthritis, ulcerative colitis and leukemia s. GR mediates the effects of glucocorticoids not only by the activation and repression of specific target genes that play important roles in several physiological processes such as metabolism, cell proliferation and inflammatory and immune responses but also through protein-protein interactions with other signalling pathways, referred to as cross-talk mechanisms. In the first study, we described a method to investigate new GR interacting proteins on a large scale using two dimensional gel electrophoresis in combination with MALDI-TOF/TOF mass spectrometry. We found 27 novel potentially important proteins that interacted with the GR receptor complex. Our data suggests that those interactions are variable depending on the presence or absence of glucocorticoids and that they also are present in different GR multiprotein complexes of different composition, indicating the existence of new GR cross-talk mechanisms. In the second study, we characterized the interaction between GR and FMS-like tyrosine kinase 3 (Flt3). We showed that the DNA-binding domain of GR is sufficient for the Flt3 interaction. Addition of Flt3 ligand also proved to be necessary for potentiation of glucocorticoid dependent transcription. The data presented in the third study aimed to detect glucocorticoid regulated genes from blood samples within a short time frame. We also measured the amount of GR in different subpopulations of
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- 2008
145. Prediction of symptomatic improvement after exposure-based treatment for irritable bowel syndrome
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Ljótsson, Brjánn, primary, Andersson, Erik, additional, Lindfors, Perjohan, additional, Lackner, Jeffrey M, additional, Grönberg, Karin, additional, Molin, Katarina, additional, Norén, Johanna, additional, Romberg, Karin, additional, Andersson, Evelyn, additional, Hursti, Timo, additional, Hesser, Hugo, additional, and Hedman, Erik, additional
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- 2013
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146. Genetic Polymorphisms in Monoamine Systems and Outcome of Cognitive Behavior Therapy for Social Anxiety Disorder
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Andersson, Evelyn, primary, Rück, Christian, additional, Lavebratt, Catharina, additional, Hedman, Erik, additional, Schalling, Martin, additional, Lindefors, Nils, additional, Eriksson, Elias, additional, Carlbring, Per, additional, Andersson, Gerhard, additional, and Furmark, Tomas, additional
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- 2013
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147. Internet-Delivered Acceptance and Values-Based Exposure Treatment for Fibromyalgia: A Pilot Study
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Ljótsson, Brjánn, primary, Atterlöf, Ehlin, additional, Lagerlöf, Maria, additional, Andersson, Erik, additional, Jernelöv, Susanna, additional, Hedman, Erik, additional, Kemani, Mike, additional, and Wicksell, Rikard K., additional
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- 2013
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148. Predictors and Moderators of Internet- and Group-Based Cognitive Behaviour Therapy for Panic Disorder
- Author
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El Alaoui, Samir, primary, Hedman, Erik, additional, Ljótsson, Brjánn, additional, Bergström, Jan, additional, Andersson, Erik, additional, Rück, Christian, additional, Andersson, Gerhard, additional, and Lindefors, Nils, additional
- Published
- 2013
- Full Text
- View/download PDF
149. Telephone Versus Internet Administration of Self-Report Measures of Social Anxiety, Depressive Symptoms, and Insomnia: Psychometric Evaluation of a Method to Reduce the Impact of Missing Data
- Author
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Hedman, Erik, primary, Ljótsson, Brjánn, additional, Blom, Kerstin, additional, El Alaoui, Samir, additional, Kraepelien, Martin, additional, Rück, Christian, additional, Andersson, Gerhard, additional, Svanborg, Cecilia, additional, Lindefors, Nils, additional, and Kaldo, Viktor, additional
- Published
- 2013
- Full Text
- View/download PDF
150. Mediators in Internet-Based Cognitive Behavior Therapy for Severe Health Anxiety
- Author
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Hedman, Erik, primary, Andersson, Erik, additional, Andersson, Gerhard, additional, Lindefors, Nils, additional, Lekander, Mats, additional, Rück, Christian, additional, and Ljótsson, Brjánn, additional
- Published
- 2013
- Full Text
- View/download PDF
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