Changes in specific and nonspecific psychopathology network structure after intensive cognitive behavior therapy in patients with anorexia nervosa

Emotion dysregulation links pathological eating styles and psychopathological traits in bariatric surgery candidates

Objectives

Approximately one-third of bariatric surgery patients experience weight regain or suboptimal weight loss within five years post-surgery. Pathological eating styles and psychopathological traits (e.g., emotion dysregulation) are recognized as potential hindrances to sustain weight loss efforts and are implicated in obesity development. A comprehensive understanding of these variables and their interplays is still lacking, despite their potential significance in developing more effective clinical interventions for bariatric patients. We investigate the prevalence of and interactions between pathological eating styles and psychopathological traits in this population.

Materials and methods

110 bariatric surgery candidates were characterized using the Binge Eating Scale (BES), Hamilton Depression/Anxiety Scales (HAM-D/A), Barratt Impulsiveness Scale (BIS-11), Experiences in Close Relationships (ECR), Difficulties in Emotion Regulation Scale (DERS). We analyzed these variables with multiple logistic regression analyses and network analysis.

Results

Patients with pathological eating styles showed more pronounced anxiety/depressive symptoms and emotion dysregulation. Network analysis revealed strong connections between BES and DERS, with DERS also displaying robust connections with HAM-A/D and ECR scales. DERS and attention impulsivity (BIS-11-A) emerged as the strongest nodes in the network.

Discussion

Our findings demonstrate the mediating role of emotion dysregulation between pathological eating styles and psychopathological traits, supporting existing literature on the association between psychopathological traits, insecure attachment styles, and pathological eating behaviors. This research emphasizes the significance of emotion regulation in the complex network of variables contributing to obesity, and its potential impact on bariatric surgery outcomes. Interventions focusing on emotion regulation may thus lead to improved clinical outcomes for bariatric patients.

10‐session Cognitive Behavioural Therapy (CBT-T) for Eating Disorders: A Systematic Review and Narrative Synthesis

To review the literature examining the effectiveness and efficacy of a cognitive behavioural therapy (CBT) for eating disorders delivered in ten sessions for those who are not underweight (CBT-T). A systematic search of the literature (MEDLINE, EMBASE, PsycINFO, Scopus and ProQuest) was conducted to identify relevant publications to date at the time of March 2022 (re-run in May 2023). Intervention studies of any study design that investigated CBT-T offering outcome data at least pre- to post- intervention for eating disorder and related outcomes were included. Results were reported for treatment attrition, abstinence, remission, eating disorder psychopathology, disordered eating behaviours, psychosocial impairment, depression and anxiety and synthesised using a narrative synthesis framework. The Effective Public Health Practice Project (EPHPP) quality assessment tool (Thomas et al., 2004) was used to assess the quality of included studies. Outcomes for 555 people who received CBT-T across eight studies (one randomised control trial and seven non-randomised studies) were synthesised. Support was found for the effectiveness and efficacy of CBT-T for a range of non-underweight eating disorders, with respect to eating disorder psychopathology, disordered eating behaviours, psychosocial impairment, abstinence and remission. CBT-T also led to improvements for depression and anxiety symptoms. CBT-T appears to improve eating disorder and co-morbid outcomes for people with non-underweight eating disorders within ten sessions, with comparable results to standard-length CBT for eating disorders (CBT-ED). Although results for CBT-T are promising, there were concerns with the quality of the studies. Future research is required to strengthen the evidence base with larger, higher-quality studies which compare CBT-T directly with recommended psychological treatments, such as standard-length CBT-ED.

Network analysis studies in patients with eating disorders: A systematic review and methodological quality assessment

INTRODUCTION

Network psychometrics has been enthusiastically embraced by researchers studying eating disorders (ED), but a rigorous evaluation of the methodological quality of works is still missing. This systematic review aims to assess the methodological quality of cross-sectional network analysis (NA) studies conducted on ED clinical populations.

METHODS

PRISMA and PICOS criteria were used to retrieve NA studies on ED. Methodological quality was evaluated based on five criteria: variable-selection procedure, network estimation method, stability checks, topological overlap checks, and handling of missing data.

RESULTS

Thirty-three cross-sectional NA studies were included. Most studies focused on populations that were female, white and, with an anorexia nervosa (AN) diagnosis. Depending on how many criteria were satisfied, 27.3% of studies (n = 9) were strictly adherent, 30.3% (n = 10) moderately adherent, 33.3% (n = 11) sufficiently adherent, and 9.1% (n = 3) poorly adherent. Missing topological overlap checks and not reporting missing data represented most unreported criteria, lacking, respectively, in 63.6% and 48.5% of studies.

CONCLUSIONS

Almost all reviewed cross-sectional NA studies on ED report those methodological procedures (variable-selection procedure, network estimation method, stability checks) necessary for a network study to provide reliable results. Nonetheless these minimum reporting data require further improvement. Moreover, elements closely related to the validity of an NA study (controls for topological overlap and management of missing data) are lacking in most studies. Recommendations to overcome such methodological weaknesses in future NA studies on ED are discussed together with the need to conduct NA studies with longitudinal design, to address diversity issues in study samples and heterogeneity of assessment tools.

PUBLIC SIGNIFICANCE

The present work aims to evaluate the quality of ED NA studies to support applications of this approach in ED research. Results show that most studies adopted basic procedures to produce reliable results; however, other important procedures linked to NA study validity were mostly neglected. Network methodology in ED is extremely promising, but future studies should consistently include topological overlap control procedures and provide information on missing data.