An eating disorder randomized clinical trial and attrition: profiles and determinants of dropout

Testing a Low-Intensity Single-Session Self-Compassion Intervention for State Body Shame in Adult Women: A Dismantling Randomized Controlled Trial

State body shame is a risk factor for eating disorders, and self-compassion is emerging as a potentially effective treatment option in such cases. This study tested the efficacy of a brief (15-minute) self-compassion intervention in reducing state body shame. Using dismantling trial methodology, participants were randomly allocated to an active compassion condition (n = 23), an inactive control compassion condition (n = 23), or an educational control condition (n = 23). Measures of state body image and state shame were collected pre-intervention, immediately after the intervention, and a day after the intervention. Subjective units of state body shame (SUBS) were intensively measured during each invention. Self-compassion interventions were equally efficacious at protecting against deterioration of state body shame and were effective at reducing state shame compared to the educational control condition, with medium effect sizes (respectively - np2 = .07 and np2 = .08). Reductions in state shame were retained at follow-up. None of the interventions had an effect on body image (np2 = .04). Findings demonstrate the clinical promise of brief self-compassion interventions, particularly as evidenced-based "homework" exercises.

Eating Disorder Treatment Dropout: What Factors Influence Access to Specialty Care in an Underresourced Appalachian Region?

Appalachia is uniquely impacted by healthcare disparities. Outpatient dropout rates remain a significant barrier for individuals necessitating specialty eating disorder (ED) treatment. We explored factors impacting patient continuation in specialty outpatient care for EDs. Participants (N=138; 89.9% female) were patients with EDs attending specialty outpatient treatment in a geographically isolated, under-resourced Appalachian community. Patient dropout rate was 26.8%. Dropout rates did not significantly differ across any sociocultural factors except patient age and BMI; patients who discontinued were older and had higher BMIs at intake, perhaps due to longer duration of illness or treatment-related misconceptions. Implications and future directions are discussed.

Evaluating individual- and sample-level response to treatment for inpatients with eating disorders: Is change clinically significant?

OBJECTIVE

Evaluating treatment efficacy solely on whether sample-level change is statistically significant does not indicate whether clinically significant change (CSC) has occurred at the individual-level. We assessed whether change in measures of eating disorder psychopathology was statistically significant at the sample-level and clinically significant at the individual-level for inpatients treated in a hospital-based eating disorder program.

METHOD

Participants (N = 143) were consecutive underweight distinct admissions diagnosed with anorexia nervosa or other specified feeding and eating disorder. The Eating Disorder Examination Questionnaire (EDEQ) and Eating Disorder Recovery Self-efficacy Questionnaire (EDRSQ) were assessed at admission and program discharge. CSC was defined as individual score change that was both statistically reliable and shifted from dysfunctional to normative.

RESULTS

Mean EDRSQ and EDEQ scores significantly improved with treatment across the sample; effect sizes were moderate to large. Individual-level analyses demonstrated that 85%, 50%, and 20-35% of participants had CSC or statistically reliable change in BMI, eating symptomatology, and body image respectively. One-third of participants showed CSC on BMI and on at least one self-report measure.

DISCUSSION

Individual-level analyses offer more nuanced outcome data that could identify patients at higher risk of relapse who may benefit from adjunctive interventions during or immediately post-discharge.

PUBLIC SIGNIFICANCE STATEMENT

This study examined change in eating pathology for inpatients with eating disorders using sample- and individual-level analyses, including whether change was statistically reliable and clinically significant (scores statistically improved and moved into the healthy range). Only half of patients responded robustly to treatment, which may be related to high relapse rates following discharge. Individual-level analyses provided a detailed view of treatment response and may identify patients at higher relapse risk.

Rationale and development of a manualised dietetic intervention for adults undergoing psychological treatment for an eating disorder

PURPOSE

Due to the current dearth of literature regarding dietetic treatment for patients with an eating disorder (ED), no manualised dietetic interventions exist to enable the testing of dietetic treatments in this population. This paper aims to: (1) describe the rationale and development of a manualised dietetic intervention for adults undergoing concurrent psychological treatment for an ED; and (2) provide an overview of the feasibility testing of this intervention.

METHODS

Current best evidence to date for dietetic treatment in EDs was utilised to develop a manualised dietetic intervention for feasibility testing alongside outpatient psychological 'treatment as usual'.

RESULTS

The developed intervention consists of five, dietitian-delivered outpatient sessions: (1) getting started; (2) mechanical eating and dietary rules; (3) estimating portion sizes and social eating; (4) maximising your meal plan and meal preparation; and (5) review and treatment planning as well as pre- and post-intervention assessments.

CONCLUSION

This paper is intended as a resource for clinicians and researchers in the conduct of future studies examining dietetic treatment for patients with an ED.

LEVEL OF EVIDENCE

Level V, description of a new manualised, reproducible dietetic intervention.

Eating disorder symptoms and core eating disorder fears decrease during online imaginal exposure therapy for eating disorders

BACKGROUND

Few evidence-based treatments for eating disorders (EDs) exist. Imaginal exposure therapy is a key component of effective treatment for anxiety disorders and post-traumatic stress disorder. However, imaginal exposure has not been systematically tested as a treatment for EDs. The current study aimed to develop and test online imaginal exposure as a treatment for EDs.

METHODS

The current study tested a four-week trial of online imaginal exposure for EDs (N = 229 participants with EDs recruited globally). Participants completed diagnostic interviews and four sessions of weekly online imaginal exposure, in which they wrote about and imagined a core ED fear (identified with a therapist). Participants completed measures of ED symptoms and fears (i.e., fear of weight gain, food) at pre-imaginal exposure, post-imaginal exposure, and six-month follow-up. Participants were recruited and participated in the protocol from November 2016 to October 2018.

RESULTS

All primary outcomes (ED symptoms, ED fears) significantly decreased at study completion and six-month follow-up with medium-to-large effect sizes. State anxiety across the exposure and follow-ups significantly decreased, specifically from initial sessions to follow-up. Worry, but not depression, significantly decreased.

LIMITATIONS

This study was an open case trial and did not include a control condition.

CONCLUSIONS

Significant decreases in ED symptoms and fears occurred during the course of imaginal exposure treatment. Online imaginal exposure is a feasible treatment for EDs and is associated with decreases in core ED symptomatology, which are comparable in magnitude to decreases seen from other evidence-based treatments. A future randomized-controlled trial is needed.

CLINICAL TRIALS REGISTRATION

ClinicalTrials.gov identifier NCT03712748.

Significados do Abandono do Tratamento para Pacientes com Transtornos Alimentares

Resumo Este estudo teve por objetivo compreender os significados do abandono do tratamento para pacientes com transtornos alimentares (TA), acompanhados em um serviço especializado. Trata-se de uma pesquisa descritivo-exploratória e transversal, com delineamento qualitativo. Participaram deste estudo seis mulheres com idades entre 19 e 37 anos, solteiras, profissionalmente ativas e com diagnóstico de TA. Foram realizadas entrevistas individuais, cujo conteúdo audiogravado foi posteriormente submetido à análise de conteúdo temática. Os motivos do abandono incluíram questionamentos relativos ao protocolo de tratamento, à equipe terapêutica, além de questões pessoais. Os aspectos multifatoriais envolvidos na dinâmica do abandono do tratamento indicam a necessidade de maior capacitação dos profissionais de saúde, especialmente no que concerne ao estabelecimento da aliança terapêutica e acolhimento empático para incrementar a adesão do paciente ao plano terapêutico. O conhecimento dos fatores apontados como desencadeadores de abandono pode contribuir para identificar precocemente indivíduos em risco e implementar medidas terapêuticas que resultem em melhor prognóstico.

The change process in adult anorexia nervosa inpatient treatment: a path model

PURPOSE

Knowledge on the change process in the treatment of anorexia nervosa (AN) is an important starting point for the improvement of treatment, yet very little evidence exists. In an exploratory analysis, we aimed to investigate the interdependencies between higher-rank change process factors, BMI and AN-specific cognitions and behaviours over the course of inpatient treatment.

METHODS

We included 176 female adult AN inpatients from three specialized centres. The temporal interdependencies between the change factors and the outcome variables over the course of treatment (t0: beginning, t1: mid-treatment, t2: end) were investigated using a path model.

RESULTS

The sample had a mean age of 27.1 years (SD = 8.9 years) and a mean BMI at admission of 15.0 kg/m² (SD = 1.6 kg/m²). A greater basic need satisfaction and a greater emotional involvement and commitment to treatment at t0 positively influenced the BMI at t1. Furthermore, greater basic need satisfaction at t0 led to less AN-specific cognitions and behaviours at t2.

CONCLUSIONS

The results are discussed with respect to the self-determination theory and the consistency theory. Further research on the change process in AN treatment is recommended.

Open Trial of Family-Based Treatment of Anorexia Nervosa for Transition Age Youth

OBJECTIVE

This pilot study conducted an open trial of a manualized adaptation to Family-Based Treatment for Transition Age Youth (FBT-TAY) for Anorexia Nervosa (AN). The aims were: (1) determine the acceptability of FBT for TAY; and, (2) establish preliminary effect sizes for the impact of FBT-TAY on eating disorder behaviour and weight restoration.

METHOD

Twenty-six participants across two paediatric and one adult hospital site were recruited to participate. Participants completed the Eating Disorder Examination Questionnaire (EDE-Q) at the start of treatment, the end-of-treatment, and three-month follow-up.

RESULTS

FBT-TAY is an acceptable and feasible treatment to all study therapists as evidenced by their fidelity to the model. FBT-TAY is a feasible and acceptable intervention to transition age youth, given only 27.27% chose treatment as usual over FBT-TAY. Participants presented significant improvement at end-of-treatment and three-months post-treatment (p < .001; ES = 0.34) from baseline on the EDE-Q Global Score. Participants also achieved and maintained weight restoration at the end-of-treatment and three-months post-treatment when compared to baseline (p < .0001, ES = 0.54).

CONCLUSIONS

FBT-TAY, the first manualized AN treatment for TAY, demonstrated feasibility and acceptability with therapists and participants as well as improvement for participants in EDE-Q global score and weight. Given the current dearth of effective treatments for TAY with AN, FBT-TAY is a promising adaptation of FBT. A larger clinical trial with a 12-month follow-up is recommended.

Applying neurobiology to the treatment of adults with anorexia nervosa

BACKGROUND

Anorexia nervosa is a severe, biologically based brain disorder with significant medical complications. It is critical that new, effective treatments are developed to interrupt the persistent course of the illness due to the medical and psychological sequelae. Several psychosocial, behavioral and pharmacologic interventions have been investigated in adult anorexia nervosa; however, evidence shows that their impact is weak and treatment effects are generally small.

METHOD

This paper describes a new neurobiological anorexia nervosa model that shifts focus from solely external influences, such as social and family, to include internal influences that integrate genetic and neurobiological contributions, across the age span. The model serves as a theoretical structure for a new, five-day treatment, outlined in this paper, targeting anorexia nervosa temperament, which integrates neurobiological dimensions into evidence-based treatment interventions. The treatment is in two phases. Phase I is a five day, 40 hour treatment for anorexia nervosa adults. Phase II is the follow-up and is currently being developed.

RESULTS

Preliminary qualitative acceptability data on 37 adults with anorexia nervosa and 60 supports (e.g., spouses, parents, aunts, friends, partners, children of anorexia nervosa adults) are promising from Phase I. Clients with anorexia nervosa and their supports report that learning neurobiological facts improved their understanding of the illness and helped equip them with better tools to manage anorexia nervosa traits and symptoms. In addition, nutritional knowledge changed significantly.

CONCLUSIONS

This is the first neurobiologically based, five-day treatment for adults with anorexia nervosa and their supports. It is a new model that outlines underlying genetic and neurobiological contributions to anorexia nervosa that serves as a foundation to treat both traits and symptoms. Preliminary qualitative findings are promising, with both clients and supports reporting that the neurobiological treatment approach helped them better understand the illness, while better conceptualizing how to respond to their traits and manage their symptoms. Data in Phase I shows promise as a neurobiologically based intervention for anorexia nervosa, and it serves as a foundation for the development of Phase II. Evidence of ongoing program efficacy will be described as data are reported on Phase II.

TRIAL REGISTRATION

NCT NCT02852538 Registered 1 August 2016.

Pre-treatment predictors of attrition in a randomised controlled trial of psychological therapy for severe and enduring anorexia nervosa

BACKGROUND

Attrition is common in the treatment of anorexia nervosa and its causes are complex and incompletely understood. In particular, its relationship with adaptive function and motivational stage of change has been little studied. This study aimed to (1) investigate and (2) compare the strength of associations between adaptive function, stage of change and other previously found factors such as illness sub-type and treatment attrition in women with severe and enduring anorexia nervosa (SE-AN).

METHODS

Participants were 63 adult women with SE-AN of at least 7 years duration who were enrolled in a multi-site randomized controlled trial conducted from July 2007 through June 2011. Treatment comprised 30 outpatient visits over 8 months of either Cognitive Behaviour Therapy for Anorexia Nervosa (CBT-AN) or Specialist Supportive Clinical Management (SSCM) both of which were modified for severe and enduring illness. Assessments were done at baseline, end of treatment, and 6 and 12 month post treatment follow-up. Demographic variables, duration of illness, specific and generic health related quality of life (QoL), eating disorder (ED) and mood disorder symptoms, social adjustment, body mass index (BMI), and motivation for change were assessed with interview and self-report questionnaires. Treatment attrition was defined as leaving therapy after either premature termination according to trial protocol or self-instigated discharge. Binary logistic regression was used to investigate relative strength of associations.

RESULTS

Those who did not complete treatment were significantly more likely to have the purging sub-type of anorexia nervosa and poorer ED related QoL. There were no significant differences between attrition and which therapy was received, educational level, and global ED psychopathology, stage of change, BMI, social adjustment, duration of illness or level of depression. The strongest predictors on multivariable analysis were ED QoL and AN-purging subtype.

CONCLUSION

This study supported previous findings of associations between attrition and purging subtype. Furthermore, we found associations between a potentially important cycle of attrition, and poorer EDQoL, which has not been previously reported. Contrary to expectations we did not find an association with BMI, severity of ED symptoms, low level of motivation to change ED features, or level of education.

Experience of an eating disorders out-patient program in an internal medicine hospital

PURPOSE

The aim of this study was to develop a successful low budget out-patient program, in an internal medicine hospital, for patients presenting eating disorders in an emerging nation.

METHODS

A total of 144 patients were included in a 6 month intervention centered in medical support, with fortnightly medical consultations, monthly counseling by a nutritionist and by a psychiatrist and three psycho-educational courses. The Three Factor Eating Questionnaire and the Eating Disorders Inventory-2 were performed at the beginning and at the end of the study.

RESULTS

After 6 months, more than half of the patients who completed the intervention were on remission. Substantial improvement was observed regarding the scores of both instruments after completion of the program.

CONCLUSIONS

The outcome of this study compares favorably to previous published data of more intensive programs. These results were obtained having little infrastructure, a low budget and limited human resources, making this a suitable eating disorders program for emerging nations.

A randomized clinical trial of an identity intervention programme for women with eating disorders

OBJECTIVE

Findings of a randomized trial of an identity intervention programme (IIP) designed to build new positive self-schemas that are separate from other conceptions of the self in memory as the means to promote improved health in women diagnosed with eating disorders are reported.

METHOD

After baseline data collection, women with anorexia nervosa or bulimia nervosa were randomly assigned to IIP (n = 34) or supportive psychotherapy (SPI) (n = 35) and followed at 1, 6, and 12 months post-intervention.

RESULTS

The IIP and supportive psychotherapy were equally effective in reducing eating disorder symptoms at 1 month post-intervention, and changes were stable through the 12-month follow-up period. The IIP tended to be more effective in fostering development of positive self-schemas, and the increase was stable over time. Regardless of baseline level, an increase in the number of positive self-schemas between pre-intervention and 1-month post-intervention predicted a decrease in desire for thinness and an increase in psychological well-being and functional health over the same period.

DISCUSSION

A cognitive behavioural intervention that focuses on increasing the number of positive self-schemas may be central to improving emotional health in women with anorexia nervosa and bulimia nervosa.