Assessing the reliability and validity of sleep assessments in patients seeking metabolic and bariatric surgery.

Background: More than 80% of patients seeking metabolic and bariatric surgery (MBS) report disturbance in sleep function. No studies have assessed the psychometric properties of sleep measures in MBS samples.

Objectives: This study assessed the reliability and validity of the Pittsburgh Sleep Quality Index (PSQI) and the Insomnia Severity Index (ISI) in a large sample of patients seeking MBS.

Pain is a cardinal symptom cutting across Rome IV anatomical categories in disorders of gut-brain interaction: A network-based approach.

Introduction: Disorders of gut-brain interaction (DGBI) are symptom-based disorders categorized by anatomic location but have high overlap and heterogeneity. Viewing DGBI symptoms on a spectrum (i.e.

Are within- and between-session changes in distress associated with treatment outcomes? Findings from two clinical trials of exposure for eating disorders.

Objective: Imaginal exposure is a novel intervention for eating disorders (EDs) that has been investigated as a method for targeting ED symptoms and fears. Research is needed to understand mechanisms of change during imaginal exposure for EDs, including whether within- and between-session distress reduction is related to treatment outcomes.

Method: Study 1 tested four sessions of online imaginal exposure (N = 143).

Facing Eating Disorder Fears: An Open Trial Adapting Prolonged Exposure to the Treatment of Eating Disorders.

Eating disorders (EDs) are maintained by core fears, which lead to avoidance behaviors, such as food avoidance or compensatory behaviors. Previously tested exposure-based treatments for EDs have generally focused on proximal outcomes (e.g.

Are central eating disorder network symptoms sensitive to item selection and sample? Implications for conceptualization of eating disorder psychopathology from a network perspective.

Item selection is a critical decision in modeling psychological networks. The current preregistered two-study research used random selections of 1,000 symptom networks to examine which eating disorder (ED) and co-occurring symptoms are most central in longitudinal networks among individuals with EDs (N = 71, total observations = 6,060) and tested whether centrality changed based on which items were included in the network. Participants completed 2 weeks of ecological momentary assessment (five surveys/day).

Inpatient hospital course and self-reported symptomatology in underweight adults with ARFID compared to age- and sex-matched controls with anorexia nervosa.

Objective: Avoidant restrictive food intake disorder (ARFID) has similar prevalence to anorexia nervosa (AN) in adults, but research in this population is lacking. Although inpatient or residential treatment involving nutritional rehabilitation is increasingly recommended for malnourished individuals with ARFID, best practices remain poorly defined. Existing studies on self-reported symptomatology and treatment course and outcome are primarily in child and adolescent cohorts and demonstrate inconsistent findings.

Development and Validation of a Broad and Fear-Adaptable Measure of Fear Approach and Application to Common Eating Disorder Fears.

Fear approach is a theorized mechanism of exposure treatment for anxiety-based disorders. However, there are no empirically established self-report instruments measuring the tendency to approach feared stimuli. Because clinical fears are heterogeneous, it is important to create a measure that is adaptable to person- or disorder-specific fears.

Evaluating the impact of COVID-19 on severity at admission and response to inpatient treatment for adult and adolescent patients with eating disorders.

Objective: The COVID-19 pandemic has been associated with increased hospitalization rates and worsened symptom severity in patients with eating disorders (ED), but most studies focused exclusively on adolescents. Further, research evaluating the impact of COVID-19 on response to inpatient treatment for ED is limited. This study aimed to compare demographic characteristics, symptom severity at admission, and discharge outcomes for adult and adolescent inpatients with EDs admitted before and after onset of the COVID-19 pandemic.

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 structure of eating disorder and somatic symptoms.

Individuals with eating disorders (EDs) often present with somatic concerns in treatment, such as bloating, fullness, and feeling tight clothes on skin. However, most research generally focuses on general interoception (e.g.

Monitoring and treating hypoglycemia during meal-based rapid nutritional rehabilitation in patients with extreme anorexia nervosa.

Purpose: Hypoglycemia, a complication of prolonged starvation, can be life-threatening and is presumed to contribute to the high mortality of anorexia nervosa. Furthermore, early refeeding in severe anorexia nervosa can precipitate paradoxical post-prandial hypoglycemia. Few studies have analyzed the course of hypoglycemia during nutritional rehabilitation in patients with extremely low-weight anorexia nervosa.

Mindfulness-based interventions for eating disorders: The potential to mobilize multiple associative-learning change mechanisms.

Mindfulness is a two-component skill that includes mindful awareness (attentional monitoring of present moment experience) and mindful acceptance (adopting an attitude of acceptance toward this experience). Although mindfulness-based interventions (MBIs) are efficacious for many conditions, there is a lack of research on MBIs for eating disorders (EDs). We propose that MBIs may be promising for EDs given their potential to mobilize not one, but multiple associative-learning change mechanisms in EDs-defined as adaptive processes of change involving one of two forms of associative-learning: Pavlovian and operant learning.

Perfectionism and Difficulty Controlling Thoughts Bridge Eating Disorder and Obsessive-Compulsive Disorder Symptoms: A Network Analysis.

Background: Eating disorders (ED) and obsessive-compulsive disorder (OCD) are highly comorbid, but little is known about how this comorbidity is maintained. Prior research suggests that obsessive thoughts and perfectionism may be shared maintenance factors for EDs and OCD.

Methods: The current study used network analysis to (1) identify bridge pathways in an ED-OCD comorbidity network and (2) test if perfectionism symptoms bridge between ED-OCD symptoms in a combined network model including ED, OCD, and Perfectionism symptoms.

Group and longitudinal intra-individual networks of eating disorder symptoms in adolescents and young adults at-risk for an eating disorder.

Several studies have identified risk factors that predict future onset of eating disorders (ED) in adolescence, however, it is currently unknown how specific ED symptom dynamics operate both across time and within individuals. Advances in network methodologies allow for the study of how dynamic symptoms interrelate and predict each other within-persons and across time. In the current study, we used longitudinal group-level (N = 1272) (addressing symptom interrelations across people and across time; between-subjects, contemporaneous, and temporal networks) and intra-individual (symptom interrelations within each person and across time; contemporaneous and temporal networks) network analyses (subset n = 50) in prospective 48-month interview data in at-risk adolescents and young adults.

Body mistrust bridges interoceptive awareness and eating disorder symptoms.

Interoceptive awareness (IA), or the awareness of internal body states, is known to be impaired in individuals with eating disorders (EDs); however, little is understood about how IA and ED symptoms are connected. Network analysis is a statistical approach useful for examining how symptoms interrelate and how comorbidities may be maintained. The present study used network analysis to (1) test central symptoms within an IA-ED network, (2) identify symptoms that may bridge the association between IA and ED symptoms, and (3) explore whether central and bridge symptoms predict ED remission at discharge from intensive treatment.

Avoidance coping during mealtimes predicts higher eating disorder symptoms.

Objective: Eating disorders (EDs) are characterized by significant anxiety during mealtime that contributes to food avoidance and weight loss. Individuals with EDs commonly use avoidance coping (e.g.

Mindfulness and eating disorder psychopathology: A meta-analysis.

Objective: Mindfulness is implicated in eating disorder (ED) psychopathology. However, this literature has not been synthesized to date. The current meta-analysis examined the associations between mindfulness and ED psychopathology.

A network investigation of core symptoms and pathways across duration of illness using a comprehensive cognitive-behavioral model of eating-disorder symptoms.

Background: In the past decade, network analysis (NA) has been applied to psychopathology to quantify complex symptom relationships. This statistical technique has demonstrated much promise, as it provides researchers the ability to identify relationships across many symptoms in one model and can identify central symptoms that may predict important clinical outcomes. However, network models are highly influenced by node selection, which could limit the generalizability of findings.

[Exploring Mechanisms of Action in Exposure-Based Cognitive Behavioral Therapy for Eating Disorders: The Role of Eating-Related Fears and Body-Related Safety Behaviors].

Evidence-based cognitive behavioral therapy for eating disorders includes a component of exposure therapy, which involves patients confronting feared eating and body-related stimuli while preventing safety behaviors. With recent research demonstrating that eating-related fears and safety behaviors are central to eating disorder pathology, there is increased emphasis on improving the efficacy of exposure therapy in eating disorders. Doing so will require a better understanding of important mechanisms of action in this treatment.

Eating disorder core symptoms and symptom pathways across developmental stages: A network analysis.

Eating disorders (EDs) often develop during adolescence and early adulthood but may persist, arise, or reemerge across the life span. Research and treatment efforts primarily focus on adolescent and young adult populations, leaving large knowledge gaps regarding ED symptoms across the entire developmental spectrum. The current study uses network analysis to compare central symptoms (i.

Development and validation of the eating disorder fear questionnaire and interview: Preliminary investigation of eating disorder fears.

Anxiety is highly characteristic of eating disorders (ED). Despite high levels of anxiety, little is known about ED specific fears. The current study developed and tested the psychometric properties of two measures of ED fears in two samples (N = 513 undergraduates; N = 129 clinical EDs): a self-report measure (Eating Disorder Fear Questionnaire; EFQ) and interview (Eating Disorder Fear Interview; EFI).