Erik Andersson

Summary

Affiliation: Karolinska Institutet
Country: Sweden

Publications

  1. pmc Internet-based cognitive behaviour therapy for obsessive-compulsive disorder: a randomized controlled trial
    E Andersson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Psychol Med 42:2193-203. 2012
  2. doi request reprint A randomized controlled trial of guided Internet-delivered cognitive behavioral therapy for erectile dysfunction
    Erik Andersson
    Department of Behavioural Sciences and Learning, Linkoping University, Sweden
    J Sex Med 8:2800-9. 2011
  3. pmc Cost-effectiveness of internet-based cognitive behavior therapy for irritable bowel syndrome: results from a randomized controlled trial
    Erik Andersson
    Department of Clinical Neuroscience, Stockholm Center for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
    BMC Public Health 11:215. 2011
  4. pmc Internet-based cognitive behavior therapy for obsessive compulsive disorder: a pilot study
    Erik Andersson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    BMC Psychiatry 11:125. 2011
  5. pmc Acceptability, effectiveness, and cost-effectiveness of internet-based exposure treatment for irritable bowel syndrome in a clinical sample: a randomized controlled trial
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    BMC Gastroenterol 11:110. 2011
  6. doi request reprint Cost-effectiveness of Internet-based cognitive behavior therapy vs. cognitive behavioral group therapy for social anxiety disorder: results from a randomized controlled trial
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Behav Res Ther 49:729-36. 2011
  7. doi request reprint Internet-based cognitive-behavioural therapy for severe health anxiety: randomised controlled trial
    Erik Hedman
    Karolinska Institutet, Department of Clinical Neuroscience, Stockholm, Sweden
    Br J Psychiatry 198:230-6. 2011
  8. pmc Predictors and moderators of internet- and group-based cognitive behaviour therapy for panic disorder
    Samir El Alaoui
    Karolinska Institutet, Department of Clinical Neuroscience, Division of Psychiatry, Stockholm, Sweden
    PLoS ONE 8:e79024. 2013
  9. pmc Mediators in internet-based cognitive behavior therapy for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden
    PLoS ONE 8:e77752. 2013
  10. pmc Internet-versus group-administered cognitive behaviour therapy for panic disorder in a psychiatric setting: a randomised trial
    Jan Bergstrom
    Department of Clinical Neuroscience, Center for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
    BMC Psychiatry 10:54. 2010

Detail Information

Publications32

  1. pmc Internet-based cognitive behaviour therapy for obsessive-compulsive disorder: a randomized controlled trial
    E Andersson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Psychol Med 42:2193-203. 2012
    ..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...
  2. doi request reprint A randomized controlled trial of guided Internet-delivered cognitive behavioral therapy for erectile dysfunction
    Erik Andersson
    Department of Behavioural Sciences and Learning, Linkoping University, Sweden
    J Sex Med 8:2800-9. 2011
    ..Internet-delivered cognitive behavior therapy (ICBT) has been shown effective for a number of health problems but evidence is limited concerning the treatment of erectile dysfunction...
  3. pmc Cost-effectiveness of internet-based cognitive behavior therapy for irritable bowel syndrome: results from a randomized controlled trial
    Erik Andersson
    Department of Clinical Neuroscience, Stockholm Center for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
    BMC Public Health 11:215. 2011
    ..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...
  4. pmc Internet-based cognitive behavior therapy for obsessive compulsive disorder: a pilot study
    Erik Andersson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    BMC Psychiatry 11:125. 2011
    ..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...
  5. pmc Acceptability, effectiveness, and cost-effectiveness of internet-based exposure treatment for irritable bowel syndrome in a clinical sample: a randomized controlled trial
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    BMC Gastroenterol 11:110. 2011
    ..We aimed to investigate the acceptability, effectiveness, and cost-effectiveness of ICBT for IBS using a consecutively recruited sample from a gastroenterological clinic...
  6. doi request reprint Cost-effectiveness of Internet-based cognitive behavior therapy vs. cognitive behavioral group therapy for social anxiety disorder: results from a randomized controlled trial
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Behav Res Ther 49:729-36. 2011
    ..We conclude that ICBT can be more cost-effective than CBGT in the treatment of SAD and that both treatments reduce societal costs for SAD...
  7. doi request reprint Internet-based cognitive-behavioural therapy for severe health anxiety: randomised controlled trial
    Erik Hedman
    Karolinska Institutet, Department of Clinical Neuroscience, Stockholm, Sweden
    Br J Psychiatry 198:230-6. 2011
    ..Internet-based CBT, including guidance in the form of minimal therapist contact via email, could be a more accessible treatment, but no study has investigated internet-based CBT for hypochondriasis...
  8. pmc Predictors and moderators of internet- and group-based cognitive behaviour therapy for panic disorder
    Samir El Alaoui
    Karolinska Institutet, Department of Clinical Neuroscience, Division of Psychiatry, Stockholm, Sweden
    PLoS ONE 8:e79024. 2013
    ..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. ..
  9. pmc Mediators in internet-based cognitive behavior therapy for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden
    PLoS ONE 8:e77752. 2013
    ..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. ..
  10. pmc Internet-versus group-administered cognitive behaviour therapy for panic disorder in a psychiatric setting: a randomised trial
    Jan Bergstrom
    Department of Clinical Neuroscience, Center for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
    BMC Psychiatry 10:54. 2010
    ..The second aim of the study was to establish the cost-effectiveness of these interventions...
  11. doi request reprint Testing the Mediating Effects of Obsessive Beliefs in Internet-Based Cognitive Behaviour Therapy for Obsessive-Compulsive Disorder: Results from a Randomized Controlled Trial
    Erik Andersson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Clin Psychol Psychother 22:722-32. 2015
    ..Copyright © 2014 John Wiley & Sons, Ltd...
  12. doi request reprint Clinical effectiveness and cost-effectiveness of Internet- vs. group-based cognitive behavior therapy for social anxiety disorder: 4-year follow-up of a randomized trial
    Erik Hedman
    Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden Electronic address
    Behav Res Ther 59:20-9. 2014
    ..We conclude that ICBT for SAD yields large sustainable effects and is at least as long-term effective as CBGT. Intervention costs of both treatments are offset by net societal cost reductions in a short time. ..
  13. doi request reprint Mechanisms of change in an exposure-based treatment for irritable bowel syndrome
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet
    J Consult Clin Psychol 81:1113-26. 2013
    ..The original study found that ICBT was more effective than ISM in improving IBS symptoms...
  14. doi request reprint Internet-delivered exposure-based treatment vs. stress management for irritable bowel syndrome: a randomized trial
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Am J Gastroenterol 106:1481-91. 2011
    ..We compared ICBT with internet-delivered stress management (ISM) for IBS to assess whether the effects of ICBT are specific...
  15. doi request reprint Psychometric properties of Internet-administered measures of health anxiety: an investigation of the Health Anxiety Inventory, the Illness Attitude Scales, and the Whiteley Index
    Erik Hedman
    Karolinska Institutet, Department of Clinical Neuroscience, Division of Psychology, Stockholm, Sweden Karolinska Institutet, Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Stockholm, Sweden Linköping University, Department of Behavioural Sciences and Learning, Linkoping, Sweden Electronic address
    J Anxiety Disord 31:32-7. 2015
    ....
  16. pmc Internet-based cognitive behavior therapy vs. cognitive behavioral group therapy for social anxiety disorder: a randomized controlled non-inferiority trial
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    PLoS ONE 6:e18001. 2011
    ..Our aim was to investigate if ICBT is at least as effective as CBGT for SAD when treatments are delivered in a psychiatric setting...
  17. pmc Optimal cut-off points on the health anxiety inventory, illness attitude scales and whiteley index to identify severe health anxiety
    Erik Hedman
    Karolinska Institutet, Department of Clinical Neuroscience, Division of Psychology, Stockholm, Sweden Karolinska Institutet, Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Stockholm, Sweden
    PLoS ONE 10:e0123412. 2015
    ..The aim of this study was therefore to investigate the HAI, IAS and WI as proximal diagnostic instruments for severe health anxiety defined as DSM-IV hypochondriasis...
  18. pmc Personality change following internet-based cognitive behavior therapy for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden
    PLoS ONE 9:e113871. 2014
    ..The treatment thus has a broader impact than just reducing health anxiety...
  19. pmc Sudden gains in internet-based cognitive behaviour therapy for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden Electronic address
    Behav Res Ther 54:22-9. 2014
    ..The aim of this study was to investigate the role of sudden gains in internet-based cognitive behavioural therapy for severe health anxiety...
  20. doi request reprint Predictors of outcome in Internet-based cognitive behavior therapy for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Retzius vag 8, SE 171 77 Stockholm, Sweden Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden Electronic address
    Behav Res Ther 51:711-7. 2013
    ..We conclude that baseline symptom burden and adherence to treatment have strong predictive effects in Internet-based CBT for severe health anxiety...
  21. pmc Therapist guided internet based cognitive behavioural therapy for body dysmorphic disorder: single blind randomised controlled trial
    Jesper Enander
    Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
    BMJ 352:i241. 2016
    ..To evaluate the efficacy of therapist guided internet based cognitive behavioural therapy (CBT) programme for body dysmorphic disorder (BDD-NET) compared with online supportive therapy...
  22. doi request reprint D-Cycloserine vs Placebo as Adjunct to Cognitive Behavioral Therapy for Obsessive-Compulsive Disorder and Interaction With Antidepressants: A Randomized Clinical Trial
    Erik Andersson
    Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden2Division of Psychiatry, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    JAMA Psychiatry 72:659-67. 2015
    ..It is unclear whether d-cycloserine (DCS), a partial N-methyl-d-aspartate agonist that enhances fear extinction, can augment the effects of exposure-based cognitive behavioral therapy (CBT) for obsessive-compulsive disorder (OCD)...
  23. doi request reprint Effectiveness and cost offset analysis of group CBT for hypochondriasis delivered in a psychiatric setting: an open trial
    Erik Hedman
    Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden
    Cogn Behav Ther 39:239-50. 2010
    ..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...
  24. doi request reprint Internet-delivered exposure-based cognitive-behavioural therapy and behavioural stress management for severe health anxiety: randomised controlled trial
    Erik Hedman
    Erik Hedman, PhD, Department of Clinical Neuroscience, Osher Center for Integrative Medicine, and Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm Erland Axelsson, MSc, Anders Görling, MSc, Carina Ritzman, MSc, Markus Ronnheden, MSc, Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm Samir El Alaoui, MSc, Erik Andersson, MSc, Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm Mats Lekander, PhD, Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, and Stress Research Institute, Stockholm University, Stockholm Brjánn Ljótsson, PhD, Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden
    Br J Psychiatry 205:307-14. 2014
    ....
  25. doi request reprint Provoking symptoms to relieve symptoms: a randomized controlled dismantling study of exposure therapy in irritable bowel syndrome
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Nobels väg 9, 171 65 Stockholm, Sweden Electronic address
    Behav Res Ther 55:27-39. 2014
    ..This study provides evidence for the utility of exposure exercises in psychological treatments for IBS. ..
  26. doi request reprint Mediators in psychological treatment of social anxiety disorder: individual cognitive therapy compared to cognitive behavioral group therapy
    Erik Hedman
    Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden Electronic address
    Behav Res Ther 51:696-705. 2013
    ..These results support the importance of the putative mediators, but suggest that their relative weights are moderated by treatment type...
  27. doi request reprint Efficacy and Cost-effectiveness of Acceptance and Commitment Therapy and Applied Relaxation for Longstanding Pain: A Randomized Controlled Trial
    Mike K Kemani
    Behavioral Medicine Pain Treatment Services, Karolinska University Hospital Departments of Clinical Neuroscience Physiology and Pharmacology, Karolinska Institutet Stress Research Institute, Stockholm University, Stockholm Department of Behavioral Sciences and Learning, Linkoping University, Linkoping, Sweden
    Clin J Pain 31:1004-16. 2015
    ..Only 1 study has evaluated the cost-effectiveness of ACT. The aim of the current study was to evaluate the efficacy and cost-effectiveness of ACT and applied relaxation (AR) for adults with unspecific, longstanding pain...
  28. pmc Therapist-guided, Internet-based cognitive-behavioural therapy for body dysmorphic disorder (BDD-NET): a feasibility study
    Jesper Enander
    Division of Psychiatry, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    BMJ Open 4:e005923. 2014
    ..One way to increase access to CBT is to administer treatment remotely via the Internet. This study piloted a novel therapist-supported, Internet-based CBT program for BDD (BDD-NET)...
  29. doi request reprint Predictors in Internet-delivered cognitive behavior therapy and behavioral stress management for severe health anxiety
    Erik Hedman
    Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden Electronic address
    Behav Res Ther 64:49-55. 2015
    ..The findings of the present study can be of high clinical value as they provide information about factors of importance for outcome in the treatment of severe health anxiety...
  30. pmc Prediction of symptomatic improvement after exposure-based treatment for irritable bowel syndrome
    Brjann Ljotsson
    Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Nobels väg 9, Stockholm 171 65, Sweden
    BMC Gastroenterol 13:160. 2013
    ..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...
  31. doi request reprint Internet-delivered acceptance and values-based exposure treatment for fibromyalgia: a pilot study
    Brjann Ljotsson
    a Department of Clinical Neuroscience, Division of Psychology, Karolinska Institutet, Stockholm, Sweden
    Cogn Behav Ther 43:93-104. 2014
    ..This study evaluated the efficacy, acceptability, and the health economic effects of an Internet-delivered acceptance and values-based exposure treatment for FM...
  32. pmc Internet-delivered cognitive behavior therapy for adolescents with obsessive-compulsive disorder: an open trial
    Fabian Lenhard
    Department of Clinical Neuroscience, Centre for Psychiatric Research and Education, Karolinska Institutet, Stockholm, Sweden
    PLoS ONE 9:e100773. 2014
    ..We developed and tested the feasibility, efficacy and acceptability of a novel therapist-guided, Internet-delivered CBT (ICBT) platform for adolescents with OCD...