Sudden gains in exposure therapy for obsessive-compulsive disorder

Multifaceted, Brief Intensive Home-Based Exposure Treatment in Patients with Obsessive-Compulsive Disorder Who are Nonresponsive to Regular Cognitive Behavior Therapy: An Uncontrolled Pilot Study

OBJECTIVE

To test a multifaceted treatment program for patients with obsessive-compulsive disorder (OCD) who did not respond to regular cognitive behavior therapy (CBT). The treatment addresses several factors that may play a role in maintaining OCD.

METHODS

We designed a treatment consisting of a 6-day intensive, individual exposure in vivo with response prevention (ERP) format, with 24 therapist-assisted treatment hours at the patient's home and 12 self-controlled ERP hours, including behavioral activation and family interventions. Next, we investigated the effect (obsessive-compulsive symptoms, comorbidity, functioning, quality of life, OCD-related interaction patterns) and feasibility (dropout, treatment satisfaction, and organization) of this program using pre-post-tests, pre-follow-up tests, and qualitative data from patients, family members, and therapists.

RESULTS

In a sample of 22 participants, obsessive-compulsive symptoms (Y-BOCS pre: 28.7, post: 15.9; Wilcoxon S-R tests P<0.01) improved significantly, as did most other effect measures. Results were largely, but not completely, preserved at 3-month follow-up. There was only 1 dropout. Patients, family members, and therapists were satisfied with the treatment. Implementation of the treatment did not pose difficulties.

CONCLUSIONS

In nonresponders with OCD, a multifaceted, brief, intensive home-based ERP program targeting factors maintaining OCD is promising and feasible. Extra care is needed to maintain improvement.

An examination of sudden gain prevalence across cognitive-behavioural therapy for anxiety and depressive disorders: A quantitative analysis and meta-analytic review

Sudden gains, incidences of unexpectedly large and stable session to session symptom reductions during psychotherapy, have been shown in samples of individuals receiving treatment for both anxiety and depressive disorders, although seemingly more frequently in sample receiving treatment for depressive disorders. This may suggest that sudden gains are a function of depression, but the high comorbidity between anxiety and depressive disorders makes this difficult to assess. Study One utilised a sample of 117 adults undergoing CBT for a principal anxiety disorder to explore the effect of comorbid depression on sudden gain prevalence. Results indicated that sudden gains were not more prevalent in the comorbid depression group; however, the frequency of sudden gains was significantly related to comorbid depressive disorder severity. Study Two involved a meta-analysis of 48 studies to compare sudden gain prevalence between trials of CBT for depressive disorders versus anxiety-related disorders. The results of the meta-analysis indicated significantly higher rates of sudden gains in samples with a principal depressive disorder diagnosis, compared to a principal anxiety disorder diagnosis. Sudden gains may therefore be driven by depression, but only at the more severe level.

The Effect of Comorbid Depression on Sudden Gains During Transdiagnostic Cognitive-Behavioural Therapy for Anxiety Disorders

During psychotherapy some patients experience large symptom improvements between sessions, termed sudden gains. Most commonly, sudden gains are observed during treatment for depression (40–50% of participants), but these are occasionally also observed in treatment for anxiety (15–20%). This study investigated the impact of comorbid depression on sudden gains in a primary anxiety sample. It was hypothesised that sudden gains would occur more frequently in participants with anxiety and comorbid depression than anxiety-only participants. The sample consisted of 58 adults who participated in a 12-week transdiagnostic cognitive-behavioural therapy (tCBT) programme. Sudden gains were more frequent in the comorbid depression group than in the anxiety-only group. Sudden gains may be predominantly a function of depressive disorders, which supports the higher rates seen in depressive disorders compared with anxiety disorders. Future research should endeavour to replicate these findings, as this was the first study designed to specifically investigate comorbidity in sudden gains.

COVID-19 and OCD: Potential impact of exposure and response prevention therapy

This brief clinical review critically assesses the use of exposure and response prevention therapy (ERP) for patients with obsessive-compulsive disorder (OCD) in light of the COVID-19 pandemic. We discuss the ethical and practical considerations that clinicians employed in past infectious disease outbreaks, as well as general safety measures routinely practiced in the conduct of exposure therapy. During this time, concerns regarding the feasibility of ERP have emerged, especially with strict guidelines on social distancing and on following other preventative behaviors. While ERP may have to be modified to follow public health guidelines, this review outlines a) how ERP has been adapted in the context of other infectious triggers; b) the potential impacts on OCD patients of attenuated ERP, and c) minimizing concerns related to litigation. A case report is provided detailing ERP personalized given COVID-19 related considerations. In all, we advise against modifying therapies in ways that may jeopardize the efficacy of patient care or progress.

Sudden Gains in Internet-Based Cognitive Behavior Therapy for Body Dysmorphic Disorder

Sudden gains have been associated with better short- and long-term treatment outcomes in a number of psychiatric disorders. However, no studies to date have evaluated sudden gains in body dysmorphic disorder (BDD). We used data from a previous randomized controlled trial evaluating the efficacy of an Internet-based cognitive-behavior treatment (CBT) for BDD. The sample consisted of 47 adults diagnosed with BDD. We compared the treatment outcomes of sudden gainers vs. gradual gainers (i.e., treatment responders with no sudden gains) and non-sudden gainers (i.e., gradual gainers plus nonresponders) at posttreatment and 3, 12, and 24 months after the end of the treatment. Twelve (25.5%) participants experienced a sudden gain. Compared to non-sudden gainers and to gradual gainers, sudden gainers showed significantly larger improvements on the Yale-Brown Obsessive-Compulsive Scale modified for BDD at posttreatment (g = 1.23 and g = .91, respectively), and at 3-month (g = 1.23 and g = 1.00, respectively), 12-month (g = 1.12 and g = .91, respectively), and 24-month follow-up (g = 1.11 and g = .97, respectively). This translated into higher rates of treatment responders and remitters in the sudden gainers across all time points. The occurrence of sudden gains in Internet-based CBT for BDD is associated with favorable short- and long-term treatment outcomes. This suggests that a sudden improvement during the treatment could be a marker of good prognosis, while non-sudden-including gradual-gainers are more likely to need continued support or booster sessions. Early identification of patients who are not progressing as expected and subsequent tailoring of the delivered intervention has the potential to improve treatment outcomes in this group.

A meta-analysis of sudden gains in psychotherapy: Outcome and moderators

Sudden gains have been shown to be a common phenomenon and an important predictor of outcome in psychotherapy (Tang & DeRubeis, 1999). The present meta-analysis examined the growing literature on sudden gains in psychotherapy, their effects on outcome, and moderators of these effects. We searched PsycINFO, PubMed, ProQuest Dissertations & Theses, Scholar and Web of Science databases for articles between January 1st 1999 and May 31st 2019 and included 50 studies (n = 6355) in the meta-analysis. Sudden gains were found to significantly predict outcome at post-treatment (g = 0.68) and follow up (g = 0.61) above and beyond treatments, disorders and settings. Studies using Tang and DeRubies's (1999) criteria for identification of sudden gains had smaller effect sizes compared to studies using altered criteria. Pretreatment severity levels did not significantly predict the effects of sudden gains and neither did treatment setting (randomized controlled trials vs. naturalistic settings). Finally, number of sessions and sudden gains' reversal rates were both negatively associated with the effect sizes of sudden gains. These findings suggest that sudden gains are a ubiquitous phenomenon in psychotherapy but their effects may be moderated by a number of factors. Research and clinical implications are discussed.

Sudden gains in cognitive behavioral therapy among children and adolescents with obsessive compulsive disorder

BACKGROUND AND OBJECTIVES

This study examined the occurrence of sudden gains (or reversal of gains) among children with obsessive-compulsive disorder (OCD) during the course of cognitive-behavioral therapy (CBT), as well as the association of sudden gains with treatment response, treatment group, and pre-treatment clinical characteristics.

METHODS

The sample consisted of 136 youth (ages 7-17) with a primary diagnosis of OCD who were randomized in a double-blinded fashion to 10 sessions of CBT with augmentation of either d-cycloserine or placebo. Sudden gain status was determined based on clinician-rated obsessive-compulsive symptom severity, which was collected on 9 occasions across the study period.

RESULTS

42.6% of youth experienced at least one sudden gain, which tended to occur either after starting exposure and response prevention or towards the end of treatment. After applying the Benjamini-Hochberg procedure for multiple comparisons, there were no significant pre-treatment predictors of sudden gains and only reduced insight predicted the reversal of gains. Individuals with at least one sudden gain had improved overall treatment outcomes, measured both by reduction in OCD symptom severity, and by global illness severity.

LIMITATIONS

Several clinical constructs were not examined. Symptomatology was not assessed at every treatment session. Differences in those who achieved sudden gains and those who did not may be obscured. There is the possibility that a sudden gain reflected a scoring error generated by an optimistic or inaccurate report. Finally, a relatively homogenous sample may limit the generalizability of results.

CONCLUSIONS

The course of CBT for pediatric OCD is variable with many children experiencing sudden gains, but a sizable percentage experience a reversal of gains which was related to reduced insight. Sudden gains tended to occur after starting exposure and response prevention and towards the end of treatment.

TRIALSREGISTRATION

ClinicaltrialsgovRegistry:NCT00864123. https://www.clinicaltrials.gov/ct2/show/NCT00864123.

Validity and reliability of the Eating Problem Checklist

The aim of this study was to validate the latest version of the Eating Problem Checklist (EPCL), a tool designed to assess eating-disorder behaviours and psychopathology in patients with eating disorders, session-by-session. The EPCL was completed at baseline by participants with eating disorders (n = 161) and a healthy control group (n = 379) and then administered session-by-session in a subgroup of 75 participants with eating disorders. The EPCL demonstrated good internal consistency, test-retest reliability, and concurrent and criterion validity, and principal axis analysis of the session-by-session data identified two factors ('eating concerns' and 'body image concerns') that accounted for 51.3% of the variance. Furthermore, session-by-session analysis indicated that the EPCL is able to identify specific weekly improvements and/or deterioration in eating-disorder psychopathology. These findings suggest that the EPCL is a valid and reliable self-report questionnaire that provides relevant clinical information regarding weekly changes in eating-disorder behaviours and psychopathology in patients with eating disorders.

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.

Does Motivation Impact OCD Symptom Severity? An Exploration of Longitudinal Effects

Understanding the role of patient motivation in OCD treatment is of clinical importance given the requisite autonomous role of patients in Exposure and Response Prevention. The present study investigated state- and trait-like relations between three variables: two previously established motivational constructs, readiness to change (RTC) and committed action (CA), derived from the University of Rhode Island Change Assessment, and OCD symptom severity as measured by the self-report Yale-Brown Obsessive Compulsive Scale (Y-BOCS-SR). Utilizing a random-intercept cross-lagged panel model (RI-CLPM) design, we assessed autoregressive, within-time correlations, and cross-lagged effects of RTC, CA, and Y-BOCS-SR scores at admission, month 1 of treatment, and discharge from an intensive/residential treatment program for OCD. Results revealed significant autoregressive (i.e., state-like) effects for CA and Y-BOCS-SR, negative within-time correlations between state CA and Y-BOCS-SR across all time points, a positive within-time correlation between state CA and RTC at admission, and a cross-lagged effect between state Y-BOCS-SR at month 1 of treatment and state RTC at discharge. Results also demonstrated that the stability of the RTC variable was attributable to trait-like factors in the present sample. This study is novel in its use of RI-CLPM in an OCD sample and represents an important addition to the literature on the longitudinal impacts of dynamic constructs of motivation. Our findings may provide future researchers with strategies to supplement ERP with CA-driven motivational interviewing.

Predictors and consequences of sudden gains in transdiagnostic cognitive-behavioural therapy for anxiety disorders

Sudden gains-substantial stable symptom improvements between consecutive therapy sessions-are a common phenomenon. As condensed points of change, examination of sudden gains can provide insight into mechanisms of therapeutic change. This study investigated the association between sudden gains and cognitive change, therapeutic alliance, and/or client engagement in transdiagnostic group cognitive-behavioural therapy for anxiety disorders. Of 58 treatment initiators, 21% (n = 12) exhibited a sudden gain. Consistent with previous research, sudden gainers demonstrated significantly greater pre- to post-treatment symptom improvement than non-sudden gainers. Observational coding of therapy sessions found that sudden gains were associated with elevated levels of cognitive change and client engagement in the pre-gain session, and elevated levels of cognitive change and therapeutic alliance in the post-gain session. However, these results varied by use of within- and between-subject control comparisons, highlighting the value using a dual control methodology. In context of previous research, the results on cognitive change replicate previous findings in depressive populations, and clarify mixed findings in anxiety populations. The results on therapeutic alliance replicate previous findings for the first time in an anxiety sample, although the between-subject control comparisons revealed complexity previously undetected. This study was also the first to investigate and thus establish the relation between client engagement and sudden gains.