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Fazeli A, Zolghadriha A, Pirzeh R, Fatehi Chenar A, Dadashi M. Comparing the effectiveness of CBT and low-frequency rTMS in reducing symptom severity and depression and improving working memory in adults with OCD: a clinical trial. Int J Neurosci 2023:1-12. [PMID: 37938152 DOI: 10.1080/00207454.2023.2279500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 10/31/2023] [Indexed: 11/09/2023]
Abstract
OBJECTIVE This study aims to compare the effectiveness of cognitive-behavioral therapy (CBT) and low-frequency (LF) repetitive transcranial magnetic stimulation (rTMS) in reducing symptom severity and depression and improving working memory in adults with obsessive-compulsive disorder (OCD). METHODS This is a randomized clinical trial conducted on 24 adults with OCD, randomly assigned into two groups of CBT (n = 12, received CBT with exposure and response prevention (ERP) individually at 20 sessions) and rTMS (n = 12, received LF (1-Hz) rTMS over the right dorsolateral prefrontal cortex (DLPFC) at 10 sessions). They completed the Yale-Brown Obsessive Compulsive Scale, the Hamilton Depression Rating Scale, and two N-Back tasks before, immediately, and 1 month after interventions. RESULTS Results showed a significant difference between the two methods in reducing the severity of OCD symptoms (p < 0.05) and depression (p = 0.002) immediately after interventions where the CBT with ERP was more effective, but no significant difference was found in terms of working memory (p > 0.05). No significant difference was found between groups in any study variables 1 month after interventions. CONCLUSION Individual CBT with ERP is superior to LF rTMS for reducing the severity of symptoms and depression in OCD patients. However, there is no difference between them in improving working memory.
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Affiliation(s)
- Arash Fazeli
- Department of Psychology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Ahmad Zolghadriha
- Department of Psychiatry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Reza Pirzeh
- Department of Psychiatry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Atefeh Fatehi Chenar
- Department of Psychology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mohsen Dadashi
- Department of Clinical Psychology, Social Determinants of Health Research Center, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
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Melkonian M, McDonald S, Scott A, Karin E, Dear BF, Wootton BM. Symptom improvement and remission in untreated adults seeking treatment for obsessive-compulsive disorder: A systematic review and meta-analysis. J Affect Disord 2022; 318:175-184. [PMID: 36030999 DOI: 10.1016/j.jad.2022.08.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 08/09/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022]
Abstract
Obsessive-compulsive disorder (OCD) is a common psychiatric condition that results in significant distress and impairment, and high societal costs. OCD is widely considered to be a chronic condition, however, our understanding of the chronicity of the disorder, and the incidence of spontaneous remission, has largely relied on longitudinal studies of individuals who have received treatment. The aim of the current study is to examine symptom improvement and rate of spontaneous remission in individuals with OCD who were assigned to a no-treatment control group within a randomized controlled trial using a meta-analytic approach. Twelve studies (n = 282; mean age = 35.52; 60.03 % female) were included in the meta-analysis. The pooled within-group effect size was negligible (g = -0.14; 95 % CI [-0.25, -0.04]) and only 4 % of participants demonstrated spontaneous remission across an average of 10.92 weeks (event rate = 0.04; [95 % CI: 0.01, 0.11]). Sample size and duration of OCD symptoms significantly moderated the effect size for symptom change. No moderators were found for symptom remission. The findings add to the small body of literature demonstrating that OCD has a chronic and unremitting course without treatment.
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Affiliation(s)
- Maral Melkonian
- Discipline of Clinical Psychology, Graduate School of Health, University of Technology, Sydney, NSW, Australia
| | - Sarah McDonald
- Discipline of Clinical Psychology, Graduate School of Health, University of Technology, Sydney, NSW, Australia
| | - Amelia Scott
- Department of Psychology, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Eyal Karin
- Department of Psychology, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Blake F Dear
- Department of Psychology, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Bethany M Wootton
- Discipline of Clinical Psychology, Graduate School of Health, University of Technology, Sydney, NSW, Australia; Department of Psychology, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, NSW, Australia.
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The effect of exposure and response prevention therapy on obsessive-compulsive disorder: A systematic review and meta-analysis. Psychiatry Res 2022; 317:114861. [PMID: 36179591 DOI: 10.1016/j.psychres.2022.114861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 01/04/2023]
Abstract
This meta-analysis mainly examined the effect size of exposure and response prevention (ERP) for obsessive-compulsive disorder (OCD) when compared with different control conditions, and the difference in the efficacy of different variants of ERP in the treatment of OCD. Thirty studies were included, involving 39 randomized controlled trials with 1793 participants, from 30 studies up to January 18, 2022. Hedge's g was calculated using random-effects models. The results showed that ERP had a definite effect on OCD (g = 0.37), and its effect was significant when the control condition was placebo (g = 0.97) or drug (g = 0.59). However, ERP did not show statistical differences with other therapies in improving OCD (g = -0.07). In addition, we found that both therapist and self-controlled exposure (at the same time as the therapist controls, self-control is exercised after the therapy session) and total response prevention can better improve OCD symptoms. In addition, compared with the control group, ERP reduced depression (g = 0.15) and anxiety symptoms (g = 0.23) in patients with OCD. Meta-regression results showed that the longer the length of sessions, the better the treatment effect (t = 2.41, p = 0.022).
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Skapinakis P, Caldwell DM, Hollingworth W, Bryden P, Fineberg NA, Salkovskis P, Welton NJ, Baxter H, Kessler D, Churchill R, Lewis G. Pharmacological and Psychotherapeutic Interventions for Management of Obsessive-compulsive Disorder in Adults: A Systematic Review and Network Meta-analysis. FOCUS (AMERICAN PSYCHIATRIC PUBLISHING) 2021; 19:457-467. [PMID: 35747299 DOI: 10.1176/appi.focus.19402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reprinted under Creative Commons CC-BY license.
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Affiliation(s)
- Petros Skapinakis
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Deborah M Caldwell
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - William Hollingworth
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Peter Bryden
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Naomi A Fineberg
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Paul Salkovskis
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Nicky J Welton
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Helen Baxter
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - David Kessler
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Rachel Churchill
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
| | - Glyn Lewis
- Division of Psychiatry, University College London, London, UK (P Skapinakis, Prof G Lewis); Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece (P Skapinakis); School of Social and Community Medicine, University of Bristol, Bristol, UK (D M Caldwell, Prof W Hollingworth, P Bryden, N J Welton, H Baxter, D Kessler); Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK, and Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK (N A Fineberg); Department of Psychology, University of Bath, Bath, UK (Prof P Salkovskis); and Centre for Reviews and Dissemination, University of York, York, UK (Prof R Churchill)
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MATTA RMD, RAMOS DG. THE APPLICATION OF SANDPLAY THERAPY IN CHILDREN WITH OBSESSIVE COMPULSIVE DISORDER. PSYCHOLOGIA 2020. [DOI: 10.2117/psysoc.2020-b009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Reinalda M. da MATTA
- International Association of Sandplay Therapy
- Pontifical Catholic University in São Paulo
| | - Denise G. RAMOS
- International Association of Sandplay Therapy
- Pontifical Catholic University in São Paulo
- Brazilian Society of Analytical Psychology (IAAP)
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Client Motivation and Engagement in Transdiagnostic Group Cognitive Behavioral Therapy for Anxiety Disorders: Predictors and Outcomes. COGNITIVE THERAPY AND RESEARCH 2019. [DOI: 10.1007/s10608-019-10014-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Skapinakis P, Caldwell D, Hollingworth W, Bryden P, Fineberg N, Salkovskis P, Welton N, Baxter H, Kessler D, Churchill R, Lewis G. A systematic review of the clinical effectiveness and cost-effectiveness of pharmacological and psychological interventions for the management of obsessive-compulsive disorder in children/adolescents and adults. Health Technol Assess 2018; 20:1-392. [PMID: 27306503 DOI: 10.3310/hta20430] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Obsessive-compulsive disorder (OCD) is a relatively common and disabling condition. OBJECTIVES To determine the clinical effectiveness, acceptability and cost-effectiveness of pharmacological and psychological interventions for the treatment of OCD in children, adolescents and adults. DATA SOURCES We searched the Cochrane Collaboration Depression, Anxiety and Neurosis Trials Registers, which includes trials from routine searches of all the major databases. Searches were conducted from inception to 31 December 2014. REVIEW METHODS We undertook a systematic review and network meta-analysis (NMA) of the clinical effectiveness and acceptability of available treatments. Outcomes for effectiveness included mean differences in the total scores of the Yale-Brown Obsessive-Compulsive Scale or its children's version and total dropouts for acceptability. For the cost-effectiveness analysis, we developed a probabilistic model informed by the results of the NMA. All analyses were performed using OpenBUGS version 3.2.3 (members of OpenBUGS Project Management Group; see www.openbugs.net ). RESULTS We included 86 randomised controlled trials (RCTs) in our systematic review. In the NMA we included 71 RCTs (54 in adults and 17 in children and adolescents) for effectiveness and 71 for acceptability (53 in adults and 18 in children and adolescents), comprising 7643 and 7942 randomised patients available for analysis, respectively. In general, the studies were of medium quality. The results of the NMA showed that in adults all selective serotonin reuptake inhibitors (SSRIs) and clomipramine had greater effects than drug placebo. There were no differences between SSRIs, and a trend for clomipramine to be more effective did not reach statistical significance. All active psychological therapies had greater effects than drug placebo. Behavioural therapy (BT) and cognitive therapy (CT) had greater effects than psychological placebo, but cognitive-behavioural therapy (CBT) did not. BT and CT, but not CBT, had greater effects than medications, but there are considerable uncertainty and methodological limitations that should be taken into account. In children and adolescents, CBT and BT had greater effects than drug placebo, but differences compared with psychological placebo did not reach statistical significance. SSRIs as a class showed a trend for superiority over drug placebo, but the difference did not reach statistical significance. However, the superiority of some individual drugs (fluoxetine, sertraline) was marginally statistically significant. Regarding acceptability, all interventions except clomipramine had good tolerability. In adults, CT and BT had the highest probability of being most cost-effective at conventional National Institute for Health and Care Excellence thresholds. In children and adolescents, CBT or CBT combined with a SSRI were more likely to be cost-effective. The results are uncertain and sensitive to assumptions about treatment effect and the exclusion of trials at high risk of bias. LIMITATIONS The majority of psychological trials included patients who were taking medications. There were few studies in children and adolescents. CONCLUSIONS In adults, psychological interventions, clomipramine, SSRIs or combinations of these are all effective, whereas in children and adolescents, psychological interventions, either as monotherapy or combined with specific SSRIs, were more likely to be effective. Future RCTs should improve their design, in particular for psychotherapy or combined interventions. STUDY REGISTRATION The study is registered as PROSPERO CRD42012002441. FUNDING DETAILS The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
| | - Deborah Caldwell
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | | | - Peter Bryden
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Naomi Fineberg
- University of Hertfordshire and Hertfordshire Partnerships Mental Health Trust, Hatfield, UK
| | | | - Nicky Welton
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Helen Baxter
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - David Kessler
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Rachel Churchill
- Centre for Reviews and Dissemination, University of York, York, UK
| | - Glyn Lewis
- Division of Psychiatry, University College London, London, UK
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Pozza A, Dèttore D. Drop-out and efficacy of group versus individual cognitive behavioural therapy: What works best for Obsessive-Compulsive Disorder? A systematic review and meta-analysis of direct comparisons. Psychiatry Res 2017; 258:24-36. [PMID: 28982038 DOI: 10.1016/j.psychres.2017.09.056] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/18/2017] [Accepted: 09/23/2017] [Indexed: 11/16/2022]
Abstract
Cognitive behavioural therapy (CBT) is the first-line psychological treatment for Obsessive-Compulsive Disorder (OCD). However, a relevant proportion of individuals with OCD remain untreated or inadequately treated. Group cognitive behavioural therapy (GCBT) may be an alternative treatment modality. Little knowledge is available about the efficacy between GCBT versus individual CBT, particularly on long-term secondary outcomes including anxiety and depression. In addition, drop-out rates have not been investigated by previous meta-analyses. The current systematic review and meta-analysis summarized evidence comparing drop-out rates between GCBT and individual CBT and efficacy at post-treatment and follow-up on OCD symptoms, depression and anxiety. A systematic review and meta-analysis according to PRISMA guidelines was conducted. Online databases were searched. Studies were included if using randomized designs comparing GCBT versus individual CBT. Six studies were included (n = 327). No difference was found between GCBT and individual CBT on drop-out rates with a medium non-significant effect. No difference resulted at post-treatment on OCD symptoms, depression, and anxiety. Analyses on a smaller number of studies indicated no difference at follow-up. Findings provided preliminary evidence that GCBT can be as effective as individual CBT. Further trials are required with higher quality and long-term assessments of quality of life.
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Affiliation(s)
- Andrea Pozza
- Department of Experimental and Clinical Medicine, University of Florence, largo Brambilla 3, 50134 Florence, Italy.
| | - Davide Dèttore
- Department of Health Sciences, University of Florence, via di San Salvi 12, 50135 Florence, Italy
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Braga DT, Abramovitch A, Fontenelle LF, Ferrão YA, Gomes JB, Vivan AS, Ecker KK, Bortoncello CF, Mittelman A, Miguel EC, Trentini CM, Cordioli AV. NEUROPSYCHOLOGICAL PREDICTORS OF TREATMENT RESPONSE TO COGNITIVE BEHAVIORAL GROUP THERAPY IN OBSESSIVE-COMPULSIVE DISORDER. Depress Anxiety 2016; 33:848-61. [PMID: 27100799 DOI: 10.1002/da.22509] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 03/19/2016] [Accepted: 03/21/2016] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The available research on the relationship between neuropsychological functioning and the therapeutic outcome of obsessive-compulsive disorder (OCD) has yielded inconsistent results. In this study, our aim was twofold. First, we sought to evaluate the effects of cognitive behavioral group therapy (CBGT) on neurocognitive functions in OCD patients. Second, we assessed the viability of neuropsychological test performance as a predictor of treatment response to CBGT. METHODS One hundred fifty carefully screened OCD patients were randomized to receive either 12-week CBGT (n = 75) or to remain on a waiting list (WL; n = 75) for the corresponding time. Forty-seven participants dropped out of the study, leaving 103 participants that were included in the analysis (CBGT, n = 61; WL, n = 42). Participants had several neuropsychological domains evaluated both at baseline and at end-point. RESULTS A significant difference in obsessive-compulsive, anxiety, and depression symptoms was observed between treated patients and controls favoring the CBGT group, but no significant differences were found on neuropsychological measures after 3 months of CBGT. In addition, there were no differences between treatment responders and nonresponders on all neuropsychological outcome measures. Employing a conservative alpha, neuropsychological test performance did not predict CBGT treatment response. CONCLUSIONS Although the CBGT group demonstrated significant improvement in OCD symptoms, no significant difference was found on all neuropsychological domains, and test performance did not predict treatment response.
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Affiliation(s)
- Daniela T Braga
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil.
| | - Amitai Abramovitch
- Department of Psychology, Texas State University, San Marcos, Texas, USA
| | - Leonardo F Fontenelle
- Department of Psychiatry and Legal Medicine, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro (RJ), Brazil
| | - Ygor A Ferrão
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Juliana B Gomes
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil
| | - Analise S Vivan
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil
| | - Kimberly K Ecker
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rio Grande do Sul (RS), Brazil
| | - Cristiane F Bortoncello
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil
| | - Andrew Mittelman
- Department of Psychology, Texas State University, San Marcos, Texas, USA
| | - Euripides C Miguel
- Department of Psychiatry, University of São Paulo Faculty of Medicine, São Paulo (SP), Brazil
| | - Clarissa M Trentini
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil
| | - Aristides V Cordioli
- Department of Psychiatry, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul (RS), Brazil
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Rapp AM, Bergman RL, Piacentini J, McGuire JF. Evidence-Based Assessment of Obsessive-Compulsive Disorder. J Cent Nerv Syst Dis 2016; 8:13-29. [PMID: 27594793 PMCID: PMC4994744 DOI: 10.4137/jcnsd.s38359] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/26/2016] [Accepted: 07/11/2016] [Indexed: 01/06/2023] Open
Abstract
Obsessive-compulsive disorder (OCD) is a neuropsychiatric illness that often develops in childhood, affects 1%-2% of the population, and causes significant impairment across the lifespan. The first step in identifying and treating OCD is a thorough evidence-based assessment. This paper reviews the administration pragmatics, psychometric properties, and limitations of commonly used assessment measures for adults and youths with OCD. This includes diagnostic interviews, clinician-administered symptom severity scales, self-report measures, and parent/child measures. Additionally, adjunctive measures that assess important related factors (ie, impairment, family accommodation, and insight) are also discussed. This paper concludes with recommendations for an evidence-based assessment based on individualized assessment goals that include generating an OCD diagnosis, determining symptom severity, and monitoring treatment progress.
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Affiliation(s)
- Amy M Rapp
- Department of Psychology, University of California Los Angeles, Los Angeles, CA, USA
| | - R Lindsay Bergman
- Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA, USA
| | - John Piacentini
- Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA, USA
| | - Joseph F McGuire
- Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA, USA
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Skapinakis P, Caldwell DM, Hollingworth W, Bryden P, Fineberg NA, Salkovskis P, Welton NJ, Baxter H, Kessler D, Churchill R, Lewis G. Pharmacological and psychotherapeutic interventions for management of obsessive-compulsive disorder in adults: a systematic review and network meta-analysis. Lancet Psychiatry 2016; 3:730-739. [PMID: 27318812 PMCID: PMC4967667 DOI: 10.1016/s2215-0366(16)30069-4] [Citation(s) in RCA: 206] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/06/2016] [Accepted: 04/18/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Several interventions are available for management of obsessive-compulsive disorder in adults, but few studies have compared their relative efficacy in a single analysis. We aimed to simultaneously compare all available treatments using both direct and indirect data. METHODS In this systematic review and network meta-analysis, we searched the two controlled trials registers maintained by the Cochrane Collaboration Common Mental Disorders group for trials published up to Feb 16, 2016. We selected randomised controlled trials in which an active psychotherapeutic or pharmacological intervention had been used in adults with obsessive-compulsive disorder. We allowed all comorbidities except for schizophrenia or bipolar disorder. We excluded studies that focused exclusively on treatment-resistant patient populations defined within the same study. We extracted data from published reports. The primary outcome was symptom severity as measured by the Yale-Brown Obsessive Compulsive Scale. We report mean differences with 95% credible intervals compared with placebo. This study is registered with PROSPERO, number CRD42012002441. FINDINGS We identified 1480 articles in our search and included 53 articles (54 trials; 6652 participants) in the network meta-analysis. Behavioural therapy (mean difference -14·48 [95% credible interval -18·61 to -10·23]; 11 trials and 287 patients), cognitive therapy (-13·36 [-18·40 to -8·21]; six trials and 172 patients), behavioural therapy and clomipramine (-12·97 [-19·18 to -6·74]; one trial and 31 patients), cognitive behavioural therapy and fluvoxamine (-7·50 [-13·89 to -1·17]; one trial and six patients), cognitive behavioural therapy (-5·37 [-9·10 to -1·63]; nine trials and 231 patients), clomipramine (-4·72 [-6·85 to -2·60]; 13 trials and 831 patients), and all SSRIs (class effect -3·49 [95% credible interval -5·12 to -1·81]; 37 trials and 3158 patients) had greater effects than did drug placebo. Clomipramine was not better than were SSRIs (-1·23 [-3·41 to 0·94]). Psychotherapeutic interventions had a greater effect than did medications, but a serious limitation was that most psychotherapeutic trials included patients who were taking stable doses of antidepressants (12 [80%] of the 15 psychotherapy trials explicitly allowed antidepressants). INTERPRETATION A range of interventions is effective in the management of obsessive-compulsive disorder, but considerable uncertainty and limitations exist regarding their relative efficacy. Taking all the evidence into account, the combination of psychotherapeutic and psychopharmacological interventions is likely to be more effective than are psychotherapeutic interventions alone, at least in severe obsessive-compulsive disorder. FUNDING National Institute for Health Research.
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Affiliation(s)
- Petros Skapinakis
- Division of Psychiatry, University College London, London, UK; Department of Psychiatry, University of Ioannina School of Medicine, University of Ioannina, Ioannina, Greece.
| | - Deborah M Caldwell
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | | | - Peter Bryden
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Naomi A Fineberg
- Department of Postgraduate Medicine, University of Hertfordshire, Hatfield, UK; Highly Specialised Obsessive-Compulsive Disorder and Body Dysmorphic Disorder Services, Hertfordshire Partnership University NHS Foundation Trust, Hertfordshire, UK
| | | | - Nicky J Welton
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Helen Baxter
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - David Kessler
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Rachel Churchill
- Centre for Reviews and Dissemination, University of York, York, UK
| | - Glyn Lewis
- Division of Psychiatry, University College London, London, UK
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Öst LG, Havnen A, Hansen B, Kvale G. Cognitive behavioral treatments of obsessive–compulsive disorder. A systematic review and meta-analysis of studies published 1993–2014. Clin Psychol Rev 2015; 40:156-69. [DOI: 10.1016/j.cpr.2015.06.003] [Citation(s) in RCA: 300] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 05/14/2015] [Accepted: 06/11/2015] [Indexed: 11/29/2022]
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‘Life just kind of sparkles’: clients’ experiences of being in cognitive behavioural group therapy and its impact on reducing shame in obsessive compulsive disorder. COGNITIVE BEHAVIOUR THERAPIST 2015. [DOI: 10.1017/s1754470x15000100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractThis study explored the personal accounts of service users relating to their experiences of being in group cognitive behavioural therapy (GCBT) for obsessive compulsive disorder (OCD). Eight participants were purposively selected from two groups whose therapy had finished. These participants were interviewed, the data transcribed verbatim and analysed using interpretative phenomenological analysis (IPA). Five superordinate themes were generated: ‘Engagement in the group process’, ‘Normalizing’, ‘Courage to fight’, ‘Being my own therapist’ and ‘Restricted vs. engagement with life’. The findings in this study have implications for theory in terms of the relevance of shame-based appraisals in conceptualizations of OCD. Suggestions for future groups include the importance of exploring the development of the problem in the group setting and highlight an important role for the group in terms of increasing motivation and preventing dropout. Directions for future research and implications for theory are explored.
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Strauss BM, Shapiro DA, Barkham M, Parry G, Machado PPP. “The Times They Are a-Changin'”*: 25 years ofPsychotherapy Research– A European and Latin American perspective. Psychother Res 2015; 25:294-308. [DOI: 10.1080/10503307.2014.1002439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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15
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A systematic review of predictors and moderators of response to psychological therapies in OCD: do we have enough empirical evidence to target treatment? Clin Psychol Rev 2013; 33:1067-81. [PMID: 24077387 DOI: 10.1016/j.cpr.2013.08.008] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 08/22/2013] [Accepted: 08/27/2013] [Indexed: 11/22/2022]
Abstract
Obsessive-compulsive disorder (OCD) is a disabling mental health condition. Despite effective psychological treatments for OCD, a significant percentage of patients fail to experience lasting benefit. Factors underlying variable treatment response are poorly understood. Moderators of outcome can help understand "for whom" and "under what circumstances" an intervention works best and thus improve service effectiveness. This paper synthesizes the evidence on predictors and moderators and assesses the quality of reporting of related analyses in psychological therapies for adults with OCD. Trials were identified through electronic searches (CENTRAL, MEDLINE, PsycINFO, EMBASE), key author, and reference list searches of relevant systematic reviews. Fifty five percent (38/69) of relevant trials reported baseline factors associated with outcome; these encompassed clinical, demographic, interpersonal, OCD symptom-specific, psychological/psychosocial, and treatment-specific variables. Predictors were commonly assessed via a validated pre-randomization measure, though few trials adopted best practice by stating a priori hypotheses or conducting a test of interaction. Potential associations emerged between worse OCD treatment outcome and the following factors: hoarding pathology, increased anxiety and OCD symptom severity, certain OCD symptom subtypes, unemployment, and being single/not married. However, the applied utility of these analyses is currently limited by methodological weaknesses.
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PONNIAH K, MAGIATI I, HOLLON SD. An update on the efficacy of psychological therapies in the treatment of obsessive-compulsive disorder in adults. J Obsessive Compuls Relat Disord 2013; 2:207-218. [PMID: 23888284 PMCID: PMC3718079 DOI: 10.1016/j.jocrd.2013.02.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We conducted a review to provide an update on the efficacy of psychological treatments for OCD in general and with regard to specific symptom presentations. The PubMed and PsycINFO databases were searched for randomized controlled trials (RCTs) published up to mid February 2012. Forty-five such studies were identified. Exposure and response prevention (ERP) and cognitive-behavioral therapy (CBT) were found to be efficacious and specific for OCD. More purely cognitive interventions that did not include ERP or behavioral experiments were found to be possibly efficacious, as were Acceptance and Commitment Therapy, Motivational Interviewing as an adjunct to the established treatments, Eye Movement Desensitization and Reprocessing, and Satiation Therapy. There was little support for Stress Management or Psychodynamic Therapy. Although the majority of the studies recruited mixed or unspecified samples of patients and did not test for moderation, CBT was efficacious for obsessional patients who lacked overt rituals. One more purely cognitive intervention named Danger Ideation Reduction Therapy was found to be possibly efficacious for patients with contamination obsessions and washing compulsions. Although ERP and CBT are the best established psychological treatments for OCD, further research is needed to help elucidate which treatments are most effective for different OCD presentations.
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Affiliation(s)
- Kathryn PONNIAH
- Department of Psychology, National University of Singapore, Singapore
| | - Iliana MAGIATI
- Department of Psychology, National University of Singapore, Singapore
| | - Steven D. HOLLON
- Department of Psychology, Vanderbilt University, Nashville, Tennessee
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Belloch A, Cabedo E, Carrió C, Fernández-Alvarez H, García F, Larsson C. Group versus individual cognitive treatment for Obsessive-Compulsive Disorder: changes in non-OCD symptoms and cognitions at post-treatment and one-year follow-up. Psychiatry Res 2011; 187:174-9. [PMID: 21075455 DOI: 10.1016/j.psychres.2010.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 08/05/2010] [Accepted: 10/19/2010] [Indexed: 11/24/2022]
Abstract
Current cognitive approaches postulate that obsessions and compulsions are caused and/or maintained by misinterpretations about their meaning. This assumption has led to the development of cognitive therapeutic (CT) procedures designed to challenge the dysfunctional appraisals and beliefs patients have about their obsessions. Nonetheless, few studies have compared the efficacy of individual and group CT in changing the dysfunctional cognitions that hypothetically underlie Obsessive-Compulsive Disorder (OCD). In this study, 44 OCD patients were assigned to individual (n=18) or group (n=24) CT. Sixteen completed the individual CT, and 22 completed the group CT. The effects of the two CT conditions on depression and worry tendencies were comparable. Individual treatment was more effective than group treatment in decreasing scores on dysfunctional beliefs (responsibility, overestimation of threat, and intolerance to uncertainty) and the use of suppression as a thought control strategy. The post-treatment changes were maintained one year later. The correlations between symptom improvement (OCD severity change) and belief changes were moderate: in the individual treatment the greatest associations were with beliefs about thoughts (importance and control), whereas in the group treatment the greatest associations were with beliefs related to anxiety in general (threat overestimation and intolerance to uncertainty).
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Affiliation(s)
- Amparo Belloch
- Departmento de Psicologia de la Personalidad, Universidad de Valencia, Valencia, Spain.
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Jónsson H, Hougaard E, Bennedsen BE. Dysfunctional beliefs in group and individual cognitive behavioral therapy for obsessive compulsive disorder. J Anxiety Disord 2011; 25:483-9. [PMID: 21232914 DOI: 10.1016/j.janxdis.2010.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 12/08/2010] [Accepted: 12/11/2010] [Indexed: 10/18/2022]
Abstract
The primary aim of the study was to investigate dysfunctional beliefs in the form of inflated responsibility (IR) and thought action fusion (TAF) as predictive and mediating variables in individual (n=33) and group (n=37) cognitive behavioral therapy (CBT) for obsessive compulsive disorder (OCD). IR and TAF declined significantly during CBT, and the decline was positively associated with change in OCD symptoms. However, when controlling for change in depressive symptoms, only change in IR remained significantly associated with OCD symptom change. The moral subtype of TAF predicted poorer treatment outcome, but only in group CBT. Both treatments produced a similar amount of change in the dysfunctional beliefs. The results provide some, preliminary evidence that IR, but not TAF, may be specifically involved in the change mechanisms of both individual and group CBT for OCD, although the design of the study with pre- and post-therapy measurements only does not allow for a causal mediator analysis.
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Affiliation(s)
- Hjalti Jónsson
- Department of Psychology, Aarhus University, Jens Chr, Skous Vej 4, 8000 Aarhus, Denmark.
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Jónsson H, Hougaard E, Bennedsen BE. Randomized comparative study of group versus individual cognitive behavioural therapy for obsessive compulsive disorder. Acta Psychiatr Scand 2011; 123:387-97. [PMID: 20946200 DOI: 10.1111/j.1600-0447.2010.01613.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The primary aim of the study was to compare the effectiveness of group and individual cognitive behaviour therapy (CBT) for obsessive compulsive disorder (OCD). METHOD One hundred and ten out-patients with OCD were randomly assigned to 15 sessions of either group CBT or individual CBT. Outcome measures were administered before and after treatment, as well as at 6- and 12-month follow-ups. The study was supplemented by a meta-analysis of accomplished comparative studies of group vs. individual CBT for OCD. RESULTS Large and stable pre-post effect sizes were found for both treatment conditions in the study (d = 1.06-1.24 on the Yale-Brown Obsessive Compulsive Scale). There were no significant between-group differences in outcome at any data point (ds= -0.13 to 0.15). The meta-analysis of four accomplished comparative studies (including the present one) found a between-group mean effect size of (d= 0.15 favouring individual over group CBT at posttreatment (95% confidence interval, -0.12, 0.42). CONCLUSION The results of this study suggest that OCD can be treated effectively with a group format of CBT, thus sparing some therapist resources, although the four accomplished comparative studies do not rule out the possibility of a small superiority of individually conducted CBT.
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Affiliation(s)
- H Jónsson
- Department of Psychology, Aarhus University, Aarhus Clinic for Obsessive Compulsive Disorder, Aarhus University Hospital, Denmark.
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Håland ÅT, Vogel PA, Lie B, Launes G, Pripp AH, Himle JA. Behavioural group therapy for obsessive–compulsive disorder in Norway. An open community-based trial. Behav Res Ther 2010; 48:547-54. [DOI: 10.1016/j.brat.2010.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 03/01/2010] [Accepted: 03/08/2010] [Indexed: 11/25/2022]
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Storch EA, McKay D, Reid JM, Geller DA, Goodman WK, Lewin AB, Murphy TK. D-Cycloserine Augmentation of Cognitive-Behavioral Therapy: Directions for Pilot Research in Pediatric Obsessive-Compulsive Disorder. CHILD & YOUTH CARE FORUM 2010. [DOI: 10.1007/s10566-010-9094-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jaurrieta N, Jiménez-Murcia S, Alonso P, Granero R, Segalàs C, Labad J, Menchón JM. Individual versus group cognitive behavioral treatment for obsessive-compulsive disorder: follow up. Psychiatry Clin Neurosci 2008; 62:697-704. [PMID: 19068007 DOI: 10.1111/j.1440-1819.2008.01873.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIM To compare the effectiveness of two forms of cognitive behavioral treatment (CBT; group and individual) in a sample of patients with obsessive-compulsive disorder (OCD) at 6-month and 12-month follow up. METHOD Thirty-eight subjects meeting DSM-IV-TR OCD criteria completed 20 sessions of individual and group CBT. They were assessed using the Yale-Brown Obsessive-Compulsive Scale and the Hamilton Anxiety and Depression Scales at baseline, after treatment and at 6-month and 12-month follow up. RESULTS The clinical improvement obtained at the end of the treatment was maintained at 6-month and 12-month follow up. The clinical outcome of the individual treatment (IT) and the group treatment (GT) was the same. The dropout rates were significantly higher in women than in men, but were similar for IT and GT. CONCLUSIONS CBT was effective in a sample of OCD patients. Individual and group CBT had similar results at 6-month and 12-month follow up. The clinical implications of these findings are discussed.
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Affiliation(s)
- Nuria Jaurrieta
- Obsessive-Compulsive Disorder Clinical and Research Unit, Department of Psychiatry, Bellvitge University Hospital, Barcelona, Spain.
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