Controlled trial of exposure and response prevention in obsessive-compulsive disorder

Changes in Brain Network Connections After Exposure and Response Prevention Therapy for Obsessive-Compulsive Disorder in Adolescents and Adults

BACKGROUND

Functional alterations of tripartite neural networks during cognitive control (i.e., frontoparietal network [FPN], cingulo-opercular network, and default mode network) occur in patients with obsessive-compulsive disorder (OCD) and may contribute to illness expression. However, the degree to which changes in these networks are elicited by gold standard treatment (e.g., exposure and response prevention [EX/RP]) remains unknown. Understanding how EX/RP modulates network connectivity in adolescent versus adult patients with OCD may aid the identification of developmentally sensitive treatment targets that enhance cognitive control.

METHODS

Data from a total of 169 adolescents (13-17 years) and adults (25-40 years; 57% female) were analyzed, including healthy control participants (n = 58) and patients with OCD (n = 111) who were randomized to either EX/RP or an active control therapy (stress management training). Participants performed a flanker task during functional magnetic resonance imaging pre- and posttreatment. To retain sensitivity to individual differences in connectivity, group iterative multiple model estimation was used to assess functional connectivity (i.e., density) within and between brain networks.

RESULTS

Significant increases in FPN density and decreases in FPN-default mode network density were observed from pre- to posttreatment in patients who received EX/RP. The opposite patterns of change occurred in patients who received stress management training. These treatment-related changes in network density did not differ across age group.

CONCLUSIONS

Results suggest EX/RP-specific changes in task-based connectivity in patients with OCD. Given baseline differences between healthy control participants and patients by age group, these treatment-related changes may indicate restoration of healthy FPN and default mode network development across patients, providing targets for improving response to EX/RP.

Exposure and response prevention versus stress management training for adults and adolescents with obsessive compulsive disorder: A randomized clinical trial

OBJECTIVE

Though exposure and response prevention (ERP) is a well-proven treatment for OCD across the lifespan, prior RCTs have not studied adolescent and adult patients with the same ERP protocol relative to an active comparator that controls for non-specific effects of treatment. This approach assesses differences in the effect of OCD-specific exposures in affected adolescents and adults and in response to ERP compared to a stress-management control therapy (SMT).

METHODS

This assessor-blinded, parallel, 2-arm, randomized, ambulatory clinical superiority trial randomized adolescents (aged 12-18) and adults (24-46) with OCD (N = 126) to 12 weekly sessions of ERP or SMT. OCD severity was measured before, during and after treatment using the child or adult version of the Yale-Brown Obsessive Compulsive Scale (C/Y-BOCS), depending on participant age. We predicted that ERP would produce greater improvement in OCD symptoms than SMT and that there would be no significant post-treatment differences across age groups.

RESULTS

ERP (n = 63) produced significantly greater improvements on C/Y-BOCS scores at post-treatment than SMT (n = 63) (Effect size = -0.72, CI = -0.52 to -0.91, p < .001). ERP also produced more treatment responders (ERP = 86%, SMT = 32%; χ2 = 46.37, p < .001) and remitters than SMT (ERP = 39%, SMT = 7%; χ2 = 16.14, p < .001). Finally, there were no statistically significant post-treatment differences in C/Y-BOCS scores between adolescents and adults assigned to ERP.

CONCLUSION

A single ERP protocol is superior to SMT in treating both adolescents and adults with OCD. OCD-specific therapy is necessary across the lifespan for optimal outcomes in this highly disabling disorder, though non-specific treatments like SMT are still all-too-commonly provided.

Comparison of internet-based and face-to-face cognitive behavioral therapy for obsessive-compulsive disorder: A systematic review and network meta-analysis

Cognitive behavioral therapy (CBT) is widely recognized as an effective treatment for obsessive-compulsive disorder (OCD). However, few patients are able to receive CBT. Internet-based CBT (ICBT) may be able to overcome this problem. In this study, we aimed to compare the efficacy of CBT, therapist-guided ICBT (TG-ICBT), unguided ICBT (UG-ICBT), and none therapist-guided ICBT (NTG-ICBT) by a network meta-analysis. The primary outcome was the mean change in OCD severity measured by the Yale-Brown Obsessive Compulsive Scale (Y-BOCS) or the Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS). The secondary outcomes included the severity of depressive symptoms, side effects, and cost-effectiveness. A total of 25 trials with 1642 participants were included. We found that the efficacy of CBT was superior to that of TG-ICBT. The mean improvement in Y-BOCS/CY-BOCS scores was higher in CBT group than in UG-ICBT group, but this difference was not statistically significant. The efficacy did not differ significantly between TG-ICBT and UG-ICBT. CBT, TG-ICBT, and UG-ICBT were all more effective than the psychological placebo, waiting list, and pill placebo. In terms of efficacy, CBT combined with drug therapy was better than CBT, TG-ICBT, and UG-ICBT. Sensitivity analyses supported these findings. Based on the current evidence, we recommend TG-ICBT when CBT is not available. However, it is undeniable that UG-ICBT also has the potential to be an effective alternative to CBT. More evidence is needed to support this possibility.

Quality of the therapeutic working alliance as a factor in intensive residential treatment of obsessive-compulsive disorder

OBJECTIVE

Intensive residential treatment (IRT) for obsessive-compulsive disorder (OCD) includes frequent meetings with a cognitive-behavioral therapist. We examined whether this therapeutic working alliance relates to IRT outcomes.

METHOD

Data came from a naturalistic sample of patients with OCD (n = 124) who received IRT at a specialty OCD clinic. Patients completed measures of OCD severity and well-being at admission and discharge. Both the patient and treating psychologist completed the Working Alliance Inventory-Short Form (WAI-SF). Alliance ratings were tested as predictors in models predicting outcomes (discharge scores adjusting for baseline and treatment duration) as well as logistic regression predicting treatment response (≥35% symptom reduction in OCD symptoms).

RESULTS

Patient and clinician ratings of the quality of the alliance were weakly yet significantly correlated. Patient ratings of the alliance predicted outcomes, while therapist ratings did not. Moreover, greater discrepancy between patient and client ratings predicted worse outcomes. Patient ratings of the task dimension of the alliance uniquely related to responder status.

CONCLUSIONS

Patient perceptions of the working alliance, particularly as pertaining to agreement on therapeutic tasks, related to success with IRT for OCD. Further study is needed test interventions to improve task alliance as a strategy to enhance treatment.

Exploration of the trait-activation model of pain catastrophizing in Native Americans: results from the Oklahoma Study of Native American pain risk (OK-SNAP)

OBJECTIVES

Native Americans (NAs) have the highest prevalence of chronic pain of any racial/ethnic group. This issue has received little attention from the scientific community. One factor that may contribute to racial pain disparities is pain catastrophizing. Pain catastrophizing is a construct related to negative pain outcomes in persons with/without chronic pain. It has been suggested that the relationship between trait catastrophizing and pain is mediated by situation-specific (state) catastrophizing. The present study has 2 aims: (1) to investigate whether state pain catastrophizing mediates the relationship between trait catastrophizing and experimental pain (e.g., cold, ischemic, heat and electric tolerance), and (2) to investigate whether this relationship is stronger for NAs.

METHODS

145 non-Hispanic Whites (NHWs) and 137 NAs completed the study. Bootstrapped indirect effects were calculated for 4 unmoderated and 8 moderated mediation models (4 models with path a moderated and 4 with path b).

RESULTS

Consistent with trait-activation theory, significant indirect effects indicated a tendency for trait catastrophizing to be associated with greater state catastrophizing which in turn is associated with reduced pain tolerance during tonic cold (a × b=-0.158) and ischemia stimuli (a × b=-0.126), but not during phasic electric and heat stimuli. Moderation was only noted for the prediction of cold tolerance (path a). Contrary to expectations, the indirect path was stronger for NHWs (a × b for NHW=-.142).

CONCLUSIONS

Together, these findings suggest that state catastrophizing mediates the relationship between trait catastrophizing and some measures of pain tolerance but this indirect effect was non-significant for NAs.

Pharmacological and Psychotherapeutic Interventions for Management of Obsessive-compulsive Disorder in Adults: A Systematic Review and Network Meta-analysis

Reprinted under Creative Commons CC-BY license.

Knowledge and competency standards for specialized cognitive behavior therapy for adult obsessive-compulsive disorder

Obsessive-Compulsive Disorder (OCD) is a leading cause of disability world-wide (World Health Organization, 2008). Treatment of OCD is a specialized field whose aim is recovery from illness for as many patients as possible. The evidence-based psychotherapeutic treatment for OCD is specialized cognitive behavior therapy (CBT, NICE, 2005, Koran and Simpson, 2013). However, these treatments are not accessible to many sufferers around the world. Currently available guidelines for care are deemed to be essential but insufficient because of highly variable clinician knowledge and competencies specific to OCD. The phase two mandate of the 14 nation International OCD Accreditation Task Force (ATF) created by the Canadian Institute for Obsessive Compulsive Disorders is development of knowledge and competency standards for specialized treatments for OCD through the lifespan deemed by experts to be foundational to transformative change in this field. This paper presents knowledge and competency standards for specialized CBT for adult OCD developed to inform, advance, and offer a model for clinical practice and training for OCD. During upcoming ATF phases three and four criteria and processes for training in specialized treatments for OCD through the lifespan for certification (individuals) and accreditation (sites) will be developed based on the ATF standards.

Exposure-Focused CBT Outperforms Relaxation-Based Control in an RCT of Treatment for Child and Adolescent Anxiety

Objective: The relative contribution of individual cognitive behavioral therapy (CBT) components to treatment outcomes for child anxiety disorders (CADs) is unclear. Recent meta-analyses suggest that exposure may be the primary active ingredient in CBT for CADs, and that relaxation may be relatively less effective. This brief report tests the hypothesis that exposure-focused CBT (EF-CBT) would outperform a relaxation-based active therapy control (Relaxation Mentorship Training; RMT) for the treatment of CADs.Method: Participants were 102 youth with CADs (mean age = 11.91, 26 males; 76.4% White, 14.7% Multiracial, 3.9% Black, 3.9% Asian, 0.9% other/do not wish to identify) as part of an ongoing neuroimaging randomized controlled trial. Participants were randomly assigned (ratio 2:1) to receive 12 sessions of EF-CBT (n = 70) or RMT (n = 32). Clinical improvement was measured at Week 12 (Clinical Global Impression - Improvement scale; CGI-I); treatment response was defined as receiving a rating of "very much" or "much improved" on the CGI-I. Anxiety severity was measured at Weeks 1, 6, 9, 12 (Pediatric Anxiety Rating Scale; PARS). Outcome measures were completed by an independent evaluator unaware of condition.Results: EF-CBT exhibited 2.98 times higher odds of treatment completion than RMT; 13 treatment non-completers were included in analyses. Estimated treatment response rates were higher for EF-CBT (57.3%) than for RMT (19.2%). Longitudinal analyses indicated that EF-CBT was associated with faster and more pronounced anxiety reductions than RMT on the PARS (Hedges' g = .77).Conclusions: Results suggest that EF-CBT without relaxation is effective for CADs, and more effective than a relaxation-based intervention.

Cognitive behavioural therapy with exposure and response prevention in the treatment of obsessive-compulsive disorder: A systematic review and meta-analysis of randomised controlled trials

BACKGROUND

Cognitive behavioural therapy (CBT), incorporating exposure and response prevention (ERP) is widely recognised as the psychological treatment of choice for obsessive-compulsive disorder (OCD). Uncertainty remains however about the magnitude of the effect of CBT with ERP and the impact of moderating factors in patients with OCD.

METHOD

This systematic review and meta-analysis assessed randomised-controlled trials of CBT with ERP in patients of all ages with OCD. The study was preregistered in PROSPERO (CRD42019122311). The primary outcome was end-of-trial OCD symptom scores. The moderating effects of patient-related and study-related factors including type of control intervention and risk of bias were examined. Additional exploratory analyses assessed the effects of treatment fidelity and impact of researcher allegiance.

RESULTS

Thirty-six studies were included, involving 2020 patients (537 children/adolescents and 1483 adults) with 1005 assigned to CBT with ERP and 1015 to control conditions. When compared against all control conditions, a large pooled effect size (ES) emerged in favour of CBT with ERP (g = 0.74: 95% CI = 0.51 to 0.97 k = 36), which appeared to diminish with increasing age. While CBT with ERP was more effective than psychological placebo (g = 1.13 95% CI 0.71 to 1.55, k = 10), it was no more effective than other active forms of psychological therapy (g = -0.05: 95% CI -0.27 to 0.16, k = 8). Similarly, whereas CBT with ERP was significantly superior when compared to all forms of pharmacological treatment (g = 0.36: 95% CI 0.7 to 0.64, k = 7), the effect became marginal when compared with adequate dosages of pharmacotherapy for OCD (g = 0.32: 95% CI -0.00 to 0.64, k = 6).A minority of studies (k = 8) were deemed to be at low risk of bias. Moreover, three quarters of studies (k = 28) demonstrated suspected researcher allegiance and these studies reported a large ES (g = 0.95: 95% CI 0.69 to 1.2), while those without suspected researcher allegiance (k = 8) indicated that CBT with ERP was not efficacious (g = 0.02: 95% CI -0.29 to 0.33).

CONCLUSIONS

A large effect size was found for CBT with ERP in reducing the symptoms of OCD, but depends upon the choice of comparator control. This meta-analysis also highlights concerns about the methodological rigor and reporting of published studies of CBT with ERP in OCD. In particular, efficacy was strongly linked to researcher allegiance and this requires further future investigation.

A randomized controlled trial of mindfulness-based cognitive therapy vs stress management training for obsessive-compulsive disorder

BACKGROUND

Recently, mindfulness-based therapies have emerged as a treatment modality for OCD, but there is sparse controlled data. We report the efficacy of mindfulness-based cognitive therapy (MBCT) in treating OCD in comparison with stress management training (SMT).

METHODS

60 outpatients with DSM-IV-TR OCD attending a specialty OCD clinic were randomly assigned in 1:1 ratio to either MBCT (n=30) or SMT (n= 30). Both the groups received 12 weekly sessions of assigned intervention. An independent blind rater assessed the primary outcome measure at baseline and at the end of 12 weeks.

RESULTS

Significantly greater proportion of patients responded to MBCT than to SMT (80% vs. 27%, P <0.001). In the linear mixed-effects modelling for intent-to-treat analysis, there was a significant reduction in the illness severity measured using the Yale-Brown Obsessive-Compulsive Scale, obsessive beliefs of 'responsibility/threat estimation' and 'perfectionism/intolerance of uncertainty' measured using the Obsessive Beliefs Questionnaire and anxiety.

LIMITATIONS

Small sample size with a relatively high attrition in the control group. Lack of a cognitive behaviour therapy (CBT) control group.

CONCLUSIONS

Mindfulness-based cognitive therapy is efficacious in the treatment of OCD. Future studies should compare MBCT with CBT in larger representative samples and also examine the sustainability of change in longitudinal studies.

Treatment-Specific Associations Between Brain Activation and Symptom Reduction in OCD Following CBT: A Randomized fMRI Trial

OBJECTIVE

The authors sought to examine whether brain activity is associated with treatment response to cognitive-behavioral therapy (CBT) in adolescents and adults with obsessive-compulsive disorder (OCD), and whether any associations are treatment specific relative to an active control psychotherapy (stress management therapy; SMT).

METHODS

Eighty-seven patients with OCD (age range 12-45 years; 57 female, 39 medicated) were randomly assigned to receive 12 weeks of CBT or SMT. Prior to treatment, functional MRI scans were conducted in patients performing an incentive flanker task, which probes brain activation to both cognitive control and reward processing. Voxelwise linear mixed-effects models examined whether baseline brain activation was differentially associated with change in scores on the Yale-Brown Obsessive Compulsive Scale (standard or Children's version) over the course of CBT or SMT treatment.

RESULTS

Within the CBT group, a better treatment response was significantly associated with greater pretreatment activation within the right temporal lobe and rostral anterior cingulate cortex during cognitive control and within the ventromedial prefrontal, orbitofrontal, lateral prefrontal, and amygdala regions during reward processing. In contrast, reduced pretreatment activation within a largely overlapping set of regions was significantly associated with a better treatment response to SMT.

CONCLUSIONS

The study findings demonstrate that associations between brain activation and treatment response were treatment specific to CBT relative to a control psychotherapy and that these associations were stable from adolescence to mature adulthood. Such treatment-specific associations are important for the development of biomarkers to personalize treatment in OCD.

Innovations in the Delivery of Exposure and Response Prevention for Obsessive-Compulsive Disorder

Obsessive-Compulsive Disorder is an important cause of global health-related disability. In the last several decades, exposure and response prevention (EX/RP) has emerged as one of the most evidence-based treatments for adult and pediatric OCD. Recommended as a first-line treatment in practice guidelines for OCD, EX/RP, when expertly delivered, can be superior to serotonin reuptake inhibitor (SRI) medications alone and superior to adding antipsychotic medication to augment SRI treatment response. Despite a robust evidence base, EX/RP is not widely available. Moreover, although effective, only about half of patients who receive a standard course of EX/RP will achieve remission.This chapter will review innovations in delivering EX/RP, focusing on technology-based methods designed to increase access to EX/RP and translational neuroscience approaches to personalizing and optimizing EX/RP. Technology-based innovations to deliver EX/RP include video conferencing, internet-based treatment, and smartphone apps. Of these, internet-based, clinician-supported treatment has the most evidence base to date. Relevant to all technology-based innovations are the need for advances in the ethical, regulatory and financial aspects of understanding how access to EX/RP may be delivered to individuals of diverse socioeconomic backgrounds in accordance with professional standards and regulations and covered by healthcare.Advances in our understanding of the neural processes underlying learning and memory have led to new ways to combine EX/RP with medications, behavioral interventions, or neuromodulatory methods, with the goal of enhancing the functioning of brain circuits that subserve fear processing and cognitive control. Among the pharmacological approaches to enhancing EX/RP outcome, both ketamine and cannabinoids show promise in small open trials but are in need of further study. Studies to train cognitive control are at an early stage of development yet provide preliminary evidence that training neural processes may be a new path to personalize treatment. How best to combine EX/RP with different types of neuromodulation is being actively studied.Together these innovations in the delivery of EX/RP for OCD hold great promise for improving outcomes of care for individuals with OCD by increasing the availability and the individual treatment effects of this already effective treatment.

Placebo Effect in Obsessive-Compulsive Disorder (OCD). Placebo Response and Placebo Responders in OCD: The Trend Over Time

BACKGROUND

Placebo response appears to be increasing in antidepressant, antipsychotic and various internal medicine trials. A similar trend has been reported for OCD during 1989-1999. Placebo response is generally considered as the extent to which placebo treatment is associated with core symptom improvement. In this analysis, we used Joinpoint regression to assess the time trend of both placebo response and placebo responder rates according to the year of publication with no time restriction in OCD drug trials.

METHODS

We included drug and/or psychotherapy trials vs. placebo from PubMed, Embase, CINAHL, and PsycINFO retrieved through the search (placebo OR sham) AND (obsessive* OR OCD). We included studies through investigator consensus. We then performed on data of included studies log-linear joinpoint segmented regression models using a p<0.05 cutoff.

RESULTS

We included 113 studies from 112 published papers. Placebo mean annual response rates in OCD studies significantly increased from 1991 to 2017 with an annual percent change (APC) of 0.66%, while placebo mean annual responder rates also significantly increased from 2010 to 2017, with an APC of 5.45%. Drug mean annual response rates in OCD studies significantly increased from 1987 to 2012 with an APC of 0.72%, while the corresponding responder rates did not show statistically significant APC changes between 1984 and 2017.

CONCLUSION

We observed a tendency for placebo to increase both measures of response in OCD clinical drug trials through the years that tend to approximate the responses shown by drugs. Changes in the type of study (moving from classical head to head comparisons to add-on studies in treatmentresistant populations) and countries involved in experimentation may partially account for some portion of these results. It appears that placebo effects are becoming more elusive and out of control.

Extended formulation in cognitive behavioural therapy for OCD: a single case experimental design

The demanding nature of exposure work that forms an essential component of exposure and response prevention (ERP) for obsessive compulsive disorder (OCD) is for some patients intolerable and leads to disengagement. The addition of cognitive therapy to ERP (CBT) with a focus on developing a shared understanding of how OCD works may aid engagement. This paper reports a case study of an individual who had not responded to two previous courses of ERP due to engagement difficulties with the treatment rationale. This study aimed to establish if CBT for OCD, incorporating an extended period of assessment and longitudinal formulation, would: (1) aid in engagement with the treatment rationale and therapy and (2) lead to an improvement in OCD symptoms, general functioning and mood. An A–B single case experimental design was used. Standardised measures were collected at weekly intervals over 15 sessions of CBT, in conjunction with pre–post idiographic behavioural measures. The extended formulation was successful in helping the individual to develop a less threatening understanding of how OCD works, enabling her to engage in therapy. This led to a reduction in the duration of the overt compulsions in her behavioural measures although on the standardised measures there was no change in self-reported OCD symptoms. The patient’s covert rituals and underlying responsibility and control beliefs largely remained intact, thus maintaining her OCD and requiring further intervention. There was a significant improvement in social functioning and consequently the patient reported being able to regain a sense of some control in her life.

Key learning aims

(1)

Sudden Gains: How Important Are They During Exposure and Response Prevention for Obsessive-Compulsive Disorder?

Symptom reduction over the course of cognitive-behavioral therapy is not always distributed evenly across sessions. Some individuals experience a sudden gain, defined as a large, rapid, and stable decrease in symptoms during treatment. Although research documents a link between sudden gains and treatment for depression and anxiety, findings in the context of obsessive-compulsive disorder (OCD) treatment are mixed. The present study investigated the relationship between sudden gains and treatment outcome in 44 adults with OCD and addressed limitations of previous studies by measuring OCD symptoms dimensionally and comparing individuals who experience sudden gains to those who experience gradual gains of similar magnitude. Sudden gains were observed among 27% of participants, with highest rates among individuals with primary contamination symptoms. Participants who experienced a sudden gain had greater OCD symptom reductions at posttreatment (but not at follow-up), and this difference did not persist after controlling for gain magnitude. Thus, the importance of sudden gains during OCD treatment may be limited. Findings are discussed in light of inhibitory learning models of cognitive-behavioral therapy.

Exposure and response prevention for obsessive-compulsive disorder: A review and new directions

Obsessive-compulsive disorder (OCD) is characterized by distressing thoughts and repetitive behaviors that are interfering, time-consuming, and difficult to control. Although OCD was once thought to be untreatable, the last few decades have seen great success in reducing symptoms with exposure and response prevention (ERP), which is now considered to be the first-line psychotherapy for the disorder. Despite these significant therapeutic advances, there remain a number of challenges in treating OCD. In this review, we will describe the theoretical underpinnings and elements of ERP, examine the evidence for its effectiveness, and discuss new directions for enhancing it as a therapy for OCD.

Does Exposure and Response Prevention Behaviorally Activate Patients With Obsessive-Compulsive Disorder? A Preliminary Test

Exposure and response prevention (ERP) and behavioral activation (BA) are effective treatments for obsessive-compulsive disorder (OCD) and depression, respectively. Patients with OCD often exhibit depression; furthermore, ERP for OCD is associated with reduced depressive symptoms. To our knowledge, no study has examined whether ERP itself functions to behaviorally activate patients with concurrent OCD and depressive symptoms. This prospective study was designed to test the hypotheses that (a) OCD exposure hierarchy completion, increased BA, and depressive symptom reduction would all be related, and (b) pre- to posttreatment changes in BA would mediate the direct effect of OCD hierarchy completion on posttreatment depressive symptoms, even after controlling for pretreatment depressive symptoms, pretreatment BA, pre- to posttreatment reductions in OCD symptoms, treatment duration, and antidepressant medication use. Patients (N = 90) with a primary diagnosis of OCD who received residential ERP for OCD completed a self-report battery at pre- and posttreatment. Exposure hierarchy completion, increases in BA, and decreases in depression were all significantly correlated (rs ranged .33 to .44). The effect of hierarchy completion on posttreatment depressive symptoms was fully mediated by pre- to posttreatment changes in BA. Findings highlight the potential for ERP to exert antidepressant effects by behaviorally activating patients. Limitations, clinical implications, and future directions are discussed.

Successfully treating 90 patients with obsessive compulsive disorder in eight days: the Bergen 4-day treatment

BACKGROUND

Oslo University Hospital, Norway, had by autumn 2016, accumulated a waiting list of 101 patients with obsessive-compulsive disorder (OCD) who had a legal right to receive treatment by a specialized OCD team. In this challenging situation, the Bergen OCD-team suggested to solve the problem by offering all patients an option for the rapid Bergen 4-day treatment (B4DT). The B4DT is an individual treatment delivered during four consecutive days in a group of six patients with the same number of therapists. The approach has previously shown a post-treatment response rate of 90% and a 3-month remission rate of 70%.

METHODS

Ninety-seven of the wait-list patients were available for the scheduled time slots, and 90 received the 4-day format during 8 days (45 patients each week). The therapists were recruited from 22 different specialized OCD-teams from all over Norway, and 44 (68%) had not previously delivered the 4-day format.

RESULTS

Post-treatment; 91.1% of the patients were classified as responders, and 72.2% were in remission. At 3-month follow-up; 84.4 were classified as responders and the remission rate was 67.7%. Oslo University Hospital now offers the 4-day treatment as standard treatment for OCD.

CONCLUSIONS

We conclude that the B4DT is an acceptable and potentially effective OCD-treatment.

Therapist-Assisted Internet-Based Cognitive Behavioral Therapy Versus Progressive Relaxation in Obsessive-Compulsive Disorder: Randomized Controlled Trial

Background

Obsessive-compulsive disorder (OCD) is a highly disabling psychological disorder with a chronic course if left untreated. Cognitive behavioral therapy (CBT) has been shown to be an effective treatment, but access to face-to-face CBT is not always possible. Internet-based CBT (iCBT) has become an increasingly viable option. However, no study has compared iCBT to an analogous control condition using a randomized controlled trial (RCT).

Objective

A 2-armed RCT was used to compare a therapist-assisted 12-module iCBT to an analogous active attention control condition (therapist-assisted internet-based standard progressive relaxation training, iPRT) in adult OCD. This paper reports pre-post findings for OCD symptom severity.

Method

In total, 179 participants (117 females, 65.7%) were randomized (stratified by gender) into iCBT or iPRT. The iCBT intervention included psychoeducation, mood and behavioral management, exposure and response prevention (ERP), cognitive therapy, and relapse prevention; the iPRT intervention included psychoeducation and relaxation techniques as a way of managing OCD-related anxiety but did not incorporate ERP or other CBT elements. Both treatments included audiovisual content, case stories, demonstrations of techniques, downloadable audio content and worksheets, and expert commentary. All participants received 1 weekly email, with a maximum 15-minute preparation time per client from a remote therapist trained in e-therapy. Emails aimed to monitor progress, provide support and encouragement, and assist in individualizing the treatment. Participants were assessed for baseline and posttreatment OCD severity with the telephone-administered clinician-rated Yale-Brown Obsessive-Compulsive Scale and other measures by assessors who were blinded to treatment allocation.

Results

No pretreatment differences were found between the 2 conditions. Intention-to-treat analysis revealed significant pre-post improvements in OCD symptom severity for both conditions (P<.001). However, relative to iPRT, iCBT showed significantly greater symptom severity improvement (P=.001); Cohen d for iCBT was 1.05 (95% CI 0.72-1.37), whereas for iPRT it was 0.48 (95% CI 0.22-0.73). The iCBT condition was superior in regard to reliable improvement (25/51, 49% vs 16/55, 29%; P=.04) and clinically significant pre-post-treatment changes (17/51, 33% vs 6/55, 11%; P=.005). Those undertaking iCBT post completion of iPRT showed further significant symptom amelioration (P<.001), although the sequential treatment was no more efficacious than iCBT alone (P=.63).

Conclusion

This study is the first to compare a therapist-assisted iCBT program for OCD to an analogous active attention control condition using iPRT. Our findings demonstrate the large magnitude effect of iCBT for OCD; interestingly, iPRT was also moderately efficacious, albeit significantly less so than the iCBT intervention. The findings are compared to previous internet-based and face-to-face CBT treatment programs for OCD. Future directions for technology-enhanced programs for the treatment of OCD are outlined.

Trial Registration

Australian New Zealand Clinical Trials Registry ACTRN12611000321943; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=336704 (Archived by WebCite at http://www.webcitation.org/70ovUiOmd)

Cognitive behavioral therapy for anxiety and related disorders: A meta-analysis of randomized placebo-controlled trials

The purpose of this study was to examine the efficacy of cognitive behavioral therapy (CBT) for anxiety-related disorders based on randomized placebo-controlled trials. We included 41 studies that randomly assigned patients (N = 2,843) with acute stress disorder, generalized anxiety disorder (GAD), obsessive compulsive disorder (OCD), panic disorder (PD), posttraumatic stress disorder (PTSD), or social anxiety disorder (SAD) to CBT or a psychological or pill placebo condition. Findings demonstrated moderate placebo-controlled effects of CBT on target disorder symptoms (Hedges' g = 0.56), and small to moderate effects on other anxiety symptoms (Hedges' g = 0.38), depression (Hedges' g = 0.31), and quality of life (Hedges' g = 0.30). Response rates in CBT compared to placebo were associated with an odds ratio of 2.97. Effects on the target disorder were significantly stronger for completer samples than intent-to-treat samples, and for individuals compared to group CBT in SAD and PTSD studies. Large effect sizes were found for OCD, GAD, and acute stress disorder, and small to moderate effect sizes were found for PTSD, SAD, and PD. In PTSD studies, dropout rates were greater in CBT (29.0%) compared to placebo (17.2%), but no difference in dropout was found across other disorders. Interventions primarily using exposure strategies had larger effect sizes than those using cognitive or cognitive and behavioral techniques, though this difference did not reach significance. Findings demonstrate that CBT is a moderately efficacious treatment for anxiety disorders when compared to placebo. More effective treatments are especially needed for PTSD, SAD, and PD.

New Directions in the Cognitive-Behavioral Treatment of OCD: Theory, Research, and Practice

The beneficial effects of cognitive-behavioral interventions (particularly exposure and response prevention) for OCD are among the most consistent research findings in the mental health literature. Nevertheless, even after an adequate trial, many individuals experience residual symptoms, and others never receive adequate treatment due to limited access. These and other issues have prompted clinicians and researchers to search for ways to improve the conceptual and practical aspects of existing treatment approaches, as well as look for augmentation strategies. In the present article, we review a number of recent developments and new directions in the psychological treatment of OCD, including (a) the application of inhibitory learning approaches to exposure therapy, (b) the development of acceptance-based approaches, (c) involvement of caregivers (partners and parents) in treatment, (d) pharmacological cognitive enhancement of exposure therapy, and (e) the use of technology to disseminate effective treatment. We focus on both the conceptual/scientific and practical aspects of these topics so that clinicians and researchers alike can assess their relative merits and disadvantages.

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

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.

Evidence-based pharmacotherapy for obsessive–compulsive disorder

The development of effective pharmacotherapy has revolutionised the treatment of obsessive–compulsive disorder (OCD), and has generated an explosion of interest in this previously poorly understood area of psychiatry. Once considered a rare, refractory form of learnt behaviour, we now recognise OCD to be a common, treatable illness, with a distinctive pathophysiology and pharmacology. Wide-ranging epidemiological surveys have demonstrated a surprisingly high lifetime prevalence amounting to 2–3% of the general population worldwide (Robins et al, 1984). Yet only a fraction of sufferers come forward for treatment and often the diagnosis is missed.

Mechanisms of cognitive-behavioral therapy for obsessive-compulsive disorder involve robust and extensive increases in brain network connectivity

Cognitive-behavioral therapy (CBT) is effective for obsessive compulsive disorder (OCD); however, little is understood about its mechanisms related to brain network connectivity. We examined connectivity changes from resting-state functional magnetic resonance imaging data pre-to-post-CBT in 43 OCD participants, randomized to receive either 4 weeks of intensive CBT or 4 weeks waitlist followed by 4 weeks of CBT, and 24 healthy controls before and after 4 weeks of no treatment. Network-based-statistic analysis revealed large-magnitude increases in OCD connectivity in eight networks. Strongest increases involved connectivity between the cerebellum and caudate/putamen, and between the cerebellum and dorsolateral/ventrolateral prefrontal cortices. Connectivity increases were associated with increased resistance to compulsions. Mechanisms of CBT may involve enhanced cross-network integration, both within and outside of classical cortico-striatal-thalamo-cortical regions; those involving cerebellar to striatal and prefrontal regions may reflect acquisition of new non-compulsive goal-directed behaviors and thought patterns. Our findings have implications for identifying targets for enhancing treatment efficacy and monitoring treatment progress.

Pharmacological and psychotherapeutic interventions for management of obsessive-compulsive disorder in adults: a systematic review and network meta-analysis

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.

Mindfulness-Based Exposure Strategies as a Transdiagnostic Mechanism of Change: An Exploratory Alternating Treatment Design

The present study explored whether distress reduction in response to strong negative emotions, a putative transdiagnostic mechanism of action, is facilitated by mindfulness strategies. Seven patients (mean age=31.14years, SD=12.28, range 19-48 years, 43% female, 86% Caucasian) with heterogeneous anxiety disorders (i.e., panic disorder with or without agoraphobia, social anxiety, generalized anxiety) were assigned a randomized order of weeklong blocks utilizing either mindfulness- or avoidance-based strategies while ascending a 6-week emotion exposure hierarchy. Participants completed three exposures per block and provided distress and avoidance use ratings following each exposure. Anxiety severity, distress aversion, and distraction/suppression tendencies were also assessed at baseline and the conclusion of each block. Visual, descriptive, and effect size results showing exposures utilizing mindfulness were associated with higher overall distress levels, compared with those utilizing avoidance. Within blocks, the majority of participants exhibited declining distress levels when employing mindfulness strategies, as opposed to more static distress levels in the avoidance condition. Systematic changes in anxiety severity, distress aversion, and distraction/suppression were not observed. These results suggest mindfulness strategies may be effective in facilitating emotion exposure; however, a minimum dosage may be necessary to overcome initial distress elevation. Potential transdiagnostic change mechanisms and clinical implications are discussed.

Development and evaluation of a computerized intervention for low distress tolerance and its effect on performance on a neutralization task

BACKGROUND AND OBJECTIVES

A growing body of research has linked high distress intolerance (DI) to obsessions, but not other OCD symptom domains. However, existing research is correlational. Experimental studies are needed, but brief methods for reducing DI are lacking. To address these gaps in the literature, a brief, computerized intervention aimed at reducing DI was developed to determine if changing DI affected obsessional phenomena.

METHODS

Individuals reporting high DI were randomized to a treatment or waitlist control group (N = 53). Individuals in the treatment group received the DI treatment (i.e., a 2 h computerized intervention) over two weeks, and then underwent a post-assessment in which DI and obsession-relevant phenomena were measured. Individuals in the control group only received the post-assessment.

RESULTS

Analyses revealed a greater reduction in self-reported DI on one measure and smaller decreases in behavioral DI in the intervention condition relative to the waitlist condition, as well as lower in-vivo urges to neutralize an intrusive thought; however, anxious reactivity to the intrusion and neutralization behavior were not affected. Further, bootstrapping analyses revealed that reductions in DI mediated the effect of the intervention on neutralization urges.

LIMITATIONS

A clinical sample and placebo control condition were not used.

CONCLUSIONS

These results provide experimental evidence for the role of DI in obsessional phenomena, specifically in affecting urges to neutralize intrusions, findings consistent with negative reinforcement models of DI. Further, results revealed that DI can be reduced with a brief, computerized intervention, which has important implications for future experimental research and treatment development.

Shared and Distinct Cognitive/Affective Mechanisms in Intrusive Cognition: An Examination of Worry and Obsessions

Generalized anxiety disorder and obsessive-compulsive disorder are defined by chronic intrusive thoughts. The aim of the present study was to evaluate the relationship between cognitive (attentional control) and motivational (negative urgency) mechanisms potentially underlying worry and obsessions. Participants (N = 526) completed an online questionnaire battery consisting of self-report measures of worry, OCD symptoms, attentional control (AC), negative urgency (NU), and trait negative affect. After controlling for trait negative affect, self-reported AC was negatively related to worry, repugnant obsessions, and ordering symptoms. Greater NU was associated with increased worry and repugnant obsessions. Further, self-reported AC and NU interacted such that greater NU was associated with greater worry at high but not low levels of AC. AC and NU were independently associated with repugnant obsessions. Perceived executive functioning impairments may confer risk for intrusive thoughts, particularly worries, whereas distress-driven impulsivity may contribute to the involuntary, ego-dystonic features of intrusions.

Efficacy of cognitive behaviour therapy versus anxiety management for body dysmorphic disorder: a randomised controlled trial

BACKGROUND

The evidence base for the efficacy of cognitive behaviour therapy (CBT) for treating body dysmorphic disorder (BDD) is weak.

AIMS

To determine whether CBT is more effective than anxiety management (AM) in an outpatient setting.

METHOD

This was a single-blind stratified parallel-group randomised controlled trial. The primary endpoint was at 12 weeks, and the Yale-Brown Obsessive Compulsive Scale for BDD (BDD-YBOCS) was the primary outcome measure. Secondary measures for BDD included the Brown Assessment of Beliefs Scale (BABS), the Appearance Anxiety Inventory (AAI) and the Body Image Quality of Life Inventory (BIQLI). The outcome measures were collected at baseline and week 12. The CBT group, unlike the AM group, had 4 further weekly sessions that were analysed for their added value. Both groups then completed measures at their 1-month follow-up. Forty-six participants with a DSM-IV diagnosis of BDD, including those with delusional BDD, were randomly allocated to either CBT or AM.

RESULTS

At 12 weeks, CBT was found to be significantly superior to AM on the BDD-YBOCS [β = -7.19; SE (β) = 2.61; p < 0.01; 95% CI = -12.31 to -2.07; d = 0.99] as well as the secondary outcome measures of the BABS, AAI and BIQLI. Further benefits occurred by week 16 within the CBT group. There were no differences in outcome for those with delusional BDD or depression.

CONCLUSIONS

CBT is an effective intervention for people with BDD even with delusional beliefs or depression and is more effective than AM over 12 weeks.

Study protocol for a randomised controlled trial of internet-based cognitive-behavioural therapy for obsessive-compulsive disorder

BACKGROUND

Obsessive-Compulsive Disorder (OCD) is a common chronic psychiatric disorder that constitutes a leading cause of disability. Although Cognitive-Behaviour Therapy (CBT) has been shown to be an effective treatment for OCD, this specialised treatment is unavailable to many due to access issues and the social stigma associated with seeing a mental health specialist. Internet-based psychological treatments have shown to provide effective, accessible and affordable treatment for a range of anxiety disorders, and two Randomised Controlled Trials (RCTs) have demonstrated the efficacy and acceptability of internet-based CBT (iCBT) for OCD, as compared to waitlist or supportive therapy. Although these initial findings are promising, they do not isolate the specific effect of iCBT. This paper details the study protocol for the first randomised control trial evaluating the efficacy of therapist-assisted iCBT for OCD, as compared to a matched control intervention; internet-based therapist-assisted progressive relaxation training (iPRT). It will aim to examine whether therapist-assisted iCBT is an acceptable and efficacious treatment, and to examine how effectiveness is influenced by patient characteristics.

METHOD/DESIGN

A randomised controlled trial using repeated measures with two arms (intervention and matched control) will be used to evaluate the efficacy and acceptability of iCBT for OCD. The RCT will randomise 212 Australian adults with a primary diagnosis of OCD into either the active intervention or control condition, for 12 weeks duration. Outcomes for participants in both study arms will be assessed at baseline and post-intervention. Participants in iCBT will be further assessed at six month follow-up, while participants in the control condition will be crossed over to receive the iCBT intervention and reassessed at post-intervention and six month follow-up. The primary outcome will be clinically significant change in obsessive-compulsive symptom scores.

DISCUSSION

This will be the first known therapist assisted internet-based trial of a comprehensive CBT treatment for OCD as compared to a matched control intervention. Demonstrating the efficacy of an internet-based treatment for OCD will allow the development of models of care for broad-based access to an evidence-based but complex treatment.

Can early improvement be an indicator of treatment response in obsessive-compulsive disorder? Implications for early-treatment decision-making

In major depression, early response to treatment has been strongly associated with final outcome. We aimed to investigate the ability of early improvement (4 weeks) to predict treatment response at 12 weeks in DSM-IV-defined obsessive-compulsive disorder (OCD) patients treated with serotonin reuptake inhibitors (SRI). We conducted an SRI practical trial with 128 subjects.

INCLUSION CRITERIA

age range 18-65 years-old, baseline Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) score ≥ 16, and absence of previous adequate pharmacological treatment. Systematic assessments were performed at baseline, 4 and 12 weeks of treatment. Treatment response at 12 weeks was defined as a 35% or greater reduction in baseline Y-BOCS score. Stepwise logistic regression was used to test the relationship between early improvement and treatment response at 12 weeks, taking into account additional potential predictive factors. Different thresholds of early improvement were tested and their predictive power was calculated. Early improvement, defined as a 20% or greater reduction from baseline Y-BOCS score at 4 weeks, predicted response at 12 weeks with 75.6% sensitivity and 61.9% specificity. According to a logistic regression including demographic and clinical features as explaining variables, early improvement was the best predictor of treatment response (OR = 1.05, p < 0.0001). Only 19.8% of patients who did not improve at 4 weeks were responders after 12 weeks. In contrast, 55.3% of the individuals who showed early improvement were responders at 12 weeks (Pearson Chi-Square = 17.06, p < 0.001). Early improvement predicted OCD treatment response with relatively good sensitivity and specificity, such that its role in early decision-making warrants further investigation in wider samples.

TRIAL REGISTRATION

clinicaltrials.gov Identifier NCT00680602.

An examination of low distress tolerance and life stressors as factors underlying obsessions

A growing body of research has linked poor distress tolerance (DT) to obsessions, but not other OC symptom domains. However, limited research has been conducted with clinical samples. Further, there is a dearth of research regarding the moderating influence of DT on the contribution of stress to OC symptoms. In Study 1, we sought to test the specificity of the link between poor DT and greater obsessions relative to other OC symptom domains in a clinical sample. In Study 2, we conducted a longitudinal investigation with a non-clinical sample examining DT and daily stressors in the prediction of daily obsessions. For Study 1, 22 outpatients with an OCD diagnosis and 37 healthy controls completed measures of DT, depression, and OC symptoms. For Study 2, 102 undergraduates completed measures of DT at baseline and daily assessments of OC symptoms and stressors twice weekly for one-month. In Study 1, OCD diagnosis was not a significant predictor of DT, though greater obsessions, but not other OC symptoms, were uniquely associated with lower DT. In Study 2, lower baseline DT predicted greater daily obsessions among those experiencing greater daily negative life events, though this relationship was absent among those with elevated DT. The specific association between DT and obsessions was replicated in a clinical sample. Further, results suggest that low DT increases obsessions in the context of life stress.

Treating obsessive-compulsive disorder in intimate relationships: a pilot study of couple-based cognitive-behavior therapy

Although cognitive-behavioral therapy (CBT) involving exposure and response prevention (ERP) is an established treatment for obsessive-compulsive disorder (OCD), not all patients respond optimally, and some show relapse upon discontinuation. Research suggests that for OCD patients in close relationships, targeting relationship dynamics enhances the effects of CBT. In the present study, we developed and pilot tested a 16-session couple-based CBT program for patients with OCD and their romantic partners. This program included (a) partner-assisted ERP, (b) techniques targeting maladaptive relationship patterns focal to OCD (e.g., symptom accommodation), and (c) techniques targeting non OCD-related relationship stressors. OCD, related symptoms, and relationship functioning were assessed at baseline, immediately following treatment (posttest), and at 6- and 12-month follow-up. At posttest, substantial improvements in OCD symptoms, relationship functioning, and depression were observed. Improvements in OCD symptoms were maintained up to 1year. Results are compared to findings from studies of individual CBT for OCD and discussed in terms of the importance of addressing interpersonal processes that maintain OCD symptoms.

Further Evidence That Repeated Checking Leads to Reduced Memory Confidence, Vividness and Detail: New Evidence That Repeated Object Exposure Also Results in Memory Distrust

Researchers have suggested that distrust in one's memory is both a cause and a consequence of repeated checking. We investigated whether reduced clarity and confidence occurs to an equal degree with repeated object use and repeated checking. In addition, whether decreased memory confidence persists after a delay in checking or use was examined. Participants (N = 113) either repeatedly checked or repeatedly used a virtual stove or a light bulb stimulus (the control stimulus). Significant declines in memory accuracy, confidence, vividness and detail were observed for the experimental compared to the control stimulus. No significant differences in these effects between the checking and exposure conditions were found. A significant increase in state anxiety across pre-, mid- and post-test was found for both conditions. These findings provide further support for the notion that repeated checking can be self-perpetuating due to its impact on memory processes. The findings also suggest that checking is not necessary for these effects to occur as repeated use without checking also results in significant declines in memory accuracy, confidence, vividness and detail. Theoretical and clinical implications are discussed.

Reliability and validity of the Dutch version of the Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID)

BACKGROUND

In the Netherlands, no self-report screening questionnaire for anxiety in people with intellectual disabilities (ID) was available yet. Therefore, we have translated the Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID) into Dutch and studied its reliability and validity in adults with borderline, mild or moderate ID.

METHOD

Test-retest reliability was studied in 66 participants, convergent validity against the Anxiety sub-scale of the Hospital, Anxiety and Depression Scale (HADS-A) in 96, and criterion validity against psychiatric diagnosis in 195 participants.

RESULTS

Internal consistency was α = 0.86 and test-retest reliability ICC = 0.89 (95% CI: 0.82-0.93). Correlation with the HADS-A was r = 0.61 (95% CI: 0.47-0.72); sensitivity was 83.9% (95% CI: 72.2-91.2) and specificity was 51.8% (95% CI: 43.6-59.9) using a cut-off score of 17. Missed diagnoses (false-negatives) were mostly specific phobias. Of the false-positives, 38 of 66 participants (58%) had another psychiatric diagnosis.

CONCLUSIONS

The Dutch version of the GAS-ID is a reliable screening instrument with satisfactory sensitivity, but moderate specificity for anxiety disorders. Although specificity for anxiety disorders is only moderate, high scores appear to be indicative of other psychiatric problems too, justifying referral for psychiatric assessment of false-positives.

An update on the efficacy of psychological therapies in the treatment of obsessive-compulsive disorder in adults

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.

Quality of life in obsessive compulsive disorder

Obsessive-compulsive disorder (OCD) has a profound impact with a high disease burden. In order to truly understand the scope of the effect OCD has on the patient population, one must take into account not only the relentless symptoms beleaguering the patients but also examine their overall ability to enjoy their life. Quality of life (QOL) assessments/improvements are becoming an increasingly important component of healthcare, especially in the mental health field. This review examines QOL in OCD, as well as the influence of comorbidities, and the impact that OCD treatment has on QOL. We searched MEDLINE/PUBMED and PsycINFO databases from 1980-2011 using keywords "obsessive compulsive disorder" OR "OCD" AND "quality of life" OR "QOL." Fifty-eight studies meeting specific selection criteria were ultimately included in this review. The results show that QOL in OCD is significantly impaired when compared to QOL in the general population and in patients with other psychiatric and medical disorders. Likewise, QOL in OCD also appears to be largely affected by comorbid conditions, which should be taken into account when developing a treatment plan. Furthermore, QOL in OCD has been shown to improve with medications and with both individual and group psychotherapy, albeit not to the levels enjoyed by community norms. QOL assessment in both clinical and research settings is important to examine the disease burden, to monitor treatment effectiveness, and to determine full recovery from OCD. Treatment providers should strive to not only reach symptom abatement, but also to assure that patients have regained satisfaction and functioning in their daily lives.

Cognitive-behavioral therapy for obsessive-compulsive disorder: a meta-analysis of treatment outcome and moderators

The present investigation employed meta-analysis to examine the efficacy of cognitive-behavioral therapy (CBT) for obsessive-compulsive disorder (OCD) as well as potential moderators that may be associated with outcome. A literature search revealed sixteen randomized-controlled trials (RCTs) with a total sample size of 756 participants that met inclusion criteria. Results indicated that CBT outperformed control conditions on primary outcome measures at post-treatment (Hedges's g = 1.39) and at follow-up (Hedges's g = 0.43). Subsequent analyses revealed few moderators of CBT efficacy. Neither higher pre-treatment OCD (p = 0.46) or depression symptom severity (p = 0.68) was significantly associated with a decrease in CBT effect size. Similarly, effect size did not vary as a function of 'type' of CBT, treatment format, treatment integrity assessment, blind assessment, age of onset, duration of symptoms, percentage of females, number of sessions, or percent comorbidity. However, active treatments showed smaller effect sizes when compared to placebo controls than when compared to waitlist controls. Effect sizes were also smaller for adult RCTs than child RCTs. Likewise, older age was associated with smaller effect sizes. However, an association between age and effect size was not observed when examining child and adult samples separately. This review indicates that while CBT is efficacious in the treatment of OCD, more research is needed to identify processes that may predict more favorable treatment responses.

Common Pitfalls in Exposure and Response Prevention (EX/RP) for OCD

Obsessive-compulsive disorder (OCD) is a highly debilitating disorder. Fortunately there are treatments that help the majority of OCD sufferers. The behavioral treatment with the most empirical support for its efficacy is exposure and response prevention (EX/RP). Over the years in our supervision meetings and in our clinical practice we have noted a number of relatively common therapist pitfalls that decrease the effectiveness of EX/RP. These pitfalls include not encouraging patients to approach the most distressing situations, doing imaginal exposure when in vivo is called for (and vice versa), encouraging distraction during exposure, providing reassurance, failing to address the core fear, ineffective handling of mental compulsions, and difficulty working with close others in the patient's life. In the current article we describe these common pitfalls and how to avoid them.

A multi-modal investigation of the roles of distress tolerance and emotional reactivity in obsessive-compulsive symptoms

Emerging evidence implicates important roles of poor distress tolerance and heightened emotional reactivity in obsessive-compulsive disorder. To date, investigations have relied mostly on self-report measures, and we sought to extend the literature by examining the relationship between OC symptoms and distress tolerance, as well as emotional reactivity, using three laboratory assessments. Nonclinical participants (N=167) viewed emotional films associated with four different negative emotions and also completed mirror tracing and handgrip persistence tasks. Greater obsessions scores were predictive of poorer emotional tolerance for a sad film and shorter persistence on the mirror tracing task. Among men only, obsessions were negatively correlated with persistence on the handgrip task. Associations between increased emotional reactivity and washing symptoms also emerged. These findings provide further evidence for the role of poor distress tolerance in obsessions and suggest heightened emotional reactivity may play a role in compulsive washing.

The nature, assessment, and treatment of obsessive-compulsive disorder

Obsessive-compulsive disorder (OCD) is an anxiety disorder that affects between 1% to 2% of individuals and causes considerable impairment and disability. Although > 50% of individuals experience symptom onset in childhood, symptoms can continue to develop throughout adulthood. Accurate and timely assessment of clinical presentation is critical to limit impairment and improve prognosis. Presently, there are 2 empirically supported treatments available for OCD in children and adults, namely cognitive-behavioral therapy and pharmacotherapy with serotonin reuptake inhibitors. This article provides an introduction to the phenomenology, etiology, and clinical course of OCD. Assessment practices used to evaluate symptom severity are described, and evidence-based treatment options are reviewed, with appropriate distinctions drawn between children and adults. Finally, recommendations for assessment and treatment practices for OCD are explicated.