Obsessive-compulsive symptoms in female patients with an eating disorder with or without impulsive non-suicidal self-injury

Impulsivity and reward and punishment sensitivity among patients admitted to a specialized inpatient eating disorder treatment program

Introduction

Eating disorders (EDs) are conceptualized as disorders of under- and over-control, with impulsivity reflecting under-control. Extant research indicates that impulsivity and related factors such as reward sensitivity and punishment sensitivity may serve as trait-level transdiagnostic risk and/or maintenance factors in EDs. Findings on impulsivity and reward and punishment sensitivity by diagnosis are mixed and research on the relationship between these factors and ED symptoms, hospital course, and treatment outcomes is limited.

Methods

Participants (N = 228) were patients admitted to a specialized inpatient behavioral treatment program for EDs who agreed to participate in a longitudinal study and completed self-report measures of impulsivity, reward sensitivity, and punishment sensitivity at admission. Weight and ED symptomatology were measured at admission and discharge. Hospital course variables included length of stay and premature treatment dropout.

Results

Impulsivity was lower in individuals with anorexia nervosa (AN) restricting type compared to those with AN binge/purge type or bulimia nervosa; no other group differences were observed. Higher impulsivity was associated with greater bulimic symptoms on the Eating Disorder Inventory 2 (EDI-2) at admission. Impulsivity was not related to ED symptoms, weight outcomes, length of hospital stay, or treatment dropout at program discharge.

Conclusion

Impulsivity may help distinguish restrictive versus binge/purge EDs, but does not necessarily relate to discharge outcomes in an intensive inpatient ED program. Findings from this study provide novel contributions to the literature on personality traits in EDs and have important clinical implications. Results suggest that patients with higher levels of impulsivity or reward and punishment sensitivity can be expected to respond to inpatient treatment. Suggestions for future research are discussed.

Eating behaviours and personality characteristics of clinicians and researchers working in eating disorders

Disturbances in eating behaviours and differences in personality characteristics, such as perfectionism, cognitive flexibility, and obsessive-compulsive behaviours, are commonly reported in individuals with eating disorders (ED) and can influence the development and maintenance of EDs. The presence of these characteristics in ED professionals may also have an influence on their patients. The aim of this study was to gain a better understanding of the presence of these behaviours and characteristics in ED clinicians/researchers (EDCR). This study examined whether these constructs differed amongst 83 EDCR and 47 general mental health clinicians/researchers (MHCR), who completed an online survey, measuring eating disorder symptomology, orthorexia nervosa, perfectionism, cognitive flexibility, and obsessive-compulsive traits. Significantly less dietary restraint, eating concerns and orthorexia nervosa behaviours, but significantly poorer ability to seek out alternative solutions (i.e. a component of cognitive flexibility) were found in the EDCR group compared with the MHCR group. Moderation analysis found no effect of ED history on the relationship between eating behaviours and group. These results suggest that working in the ED field may be a protective factor against developing certain disordered eating behaviours. However, poorer cognitive flexibility may adversely impact EDCRs, and should be considered when carrying out their clinical and/or research duties.

Non-suicidal self-injury among individuals with an eating disorder: A systematic review and prevalence meta-analysis

OBJECTIVE

This study aimed to quantify the prevalence of non-suicidal self-injury across eating disorders (EDs) and within diagnostic categories through systematic review and proportional, or so-called prevalence, meta-analysis.

METHOD

Included studies had to contain individuals with a verified diagnosis of an ED. The last literature search was conducted on September 11, 2023, for studies published on or before September 2023 without a restriction on earliest publication year. Results were synthesized and analyzed using the "metaprop" package in R and presented using forest plots. Bias was assessed by a Peters' regression test and funnel plot.

RESULTS

79 studies published between 1985 and 2023 were included encompassing 32,334 individuals with an ED. Importantly, 42 studies were not included in any other meta-analyses on self-injury in EDs to date. Overall prevalence of non-suicidal self-injury was 34.59% (95%CI = 30.49-38.81). Prevalence in anorexia nervosa restrictive type, binge/purge type, bulimia nervosa, binge eating disorder and other specified feeding/eating disorder were 23.19% (95%CI = 16.96-30.03%), 41.98% (95%CI = 32.35-51.91%), 36.97% (95%CI = 30.69-43.46%), 21.21% (95%CI = 14.93-28.12%) and 37.65% (95%CI = 28.59-47.09%), respectively. Prevalence estimations could not be estimated for other ED categories due to lack of a sufficient number of studies.

DISCUSSION

Non-suicidal self-injury is prevalent across both binge/purge and restrictive EDs. Considering the transdiagnostic nature of self-injurious behaviors in ED, the results highlight the importance of assessment and monitoring of self-injury in people with ED, irrespective of specific diagnoses. The method of determining self-injury varied across studies and may limit this study.

PUBLIC SIGNIFICANCE

This study highlights the prevalence of self-injury across eating disorders irrespective of diagnosis and within specific EDs. While diagnoses known to exhibit self-injurious behaviors (e.g., bulimia nervosa, anorexia nervosa binge/purge subtype) demonstrated the highest prevalence of self-injury, all diagnoses were found to have a prevalence greater than 20%. These findings suggest the importance of assessing and monitoring all individuals with an eating disorder for the presence of self-injury.

Lifetime prevalence and clinical correlates of nonsuicidal self-injury in youth inpatients with eating disorders: a retrospective chart review

BACKGROUND

Youths with eating disorders (EDs) engaging in nonsuicidal self-injury (NSSI) are at higher suicide risk because EDs and NSSI are associated with suicidality. However, epidemiologic data on NSSI lacks in the vulnerable group of youth ED inpatients.

METHODS

This retrospective chart review included patients up to 18 years of age with an ICD-10 diagnosis of anorexia nervosa, restricting type (AN-R), anorexia nervosa, binge-purge type (AN-BP), and bulimia nervosa (BN), treated at the child and adolescent inpatient department of the University Hospital in Berlin, Germany, between 1990 and 2015. Across and within ED subgroups, lifetime NSSI prevalence, methods of self-harm, and clinical correlates were evaluated. Independent correlations of demographic and clinical factors with NSSI were identified via multivariable regression models.

RESULTS

Of 382 inpatients (median = 15.6 (range = 9-18) years, females = 97.1%), 21.5% reported lifetime NSSI, consisting of cutting = 86.6%, scratching = 12.2%, and hitting = 8.5%. NSSI was more frequent in BN (47.6%) and AN-BP (39.3%) than AN-R (8.3%) (Φ = 0.43). Across ED subgroups, NSSI was associated with a higher prevalence of psychiatric comorbidities (AN-R: Φ = 0.55; AN-BP: Φ = 0.69; BN: Φ = 0.78), suicidal ideation (AN-R: Φ = 0.30; AN-BP: Φ = 0.38; BN: Φ = 0.29), and psychiatric medication use (AN-R: Φ = 0.23; AN-BP: Φ = 0.64; BN: Φ = 0.60). In multivariable regression analyses, NSSI was independently associated with a higher prevalence of psychiatric comorbidities (AN-R: OR = 2.93 [1.42, 6.04]; AN-BP: OR = 2.67 [1.13, 6.31]; BN: OR = 3.75 [1.71, 8.23]). Additionally, independent correlates with NSSI in AN-R included a higher prevalence of suicidal ideation (OR = 0.21 [0.72, 0.64]) and less weekly weight gain (OR = 0.03 [0.02, 0.43]), while in BN, NSSI was correlated with longer inpatient treatment duration (OR = 1.01 [1.00, 1.02]).

CONCLUSIONS

There is a high lifetime prevalence of NSSI among youth with AN and BN requiring inpatient treatment, especially those with binge-purge behaviors. Treatment programs must be tailored to address psychiatric comorbidities and suicidality to improve patient care and suicide prevention.

TRIAL REGISTRATION

This study was not considered a clinical trial but a retrospective chart review based on routinely assessed clinical parameters. The study includes data from human participants, however: (1) no intervention and no prospective assignment to interventions were performed, and (2) no evaluation of an intervention on participants was accomplished.

[Non-suicidal self-injurious behavior in adolescents]

OBJECTIVE

To compare the motives of non-suicidal self-injurious behavior (NSSI) in terms of nosological affiliation, gender and age group.

MATERIAL AND METHODS

Ninety-one patients, 80 women and 11 men, aged 13-24 years old, who independently applied to the SPbSPMU consulting center, were selected. The patients were examined clinically as well as using the Russian-language adapted version of the Inventory of Statements about Self-injury. The younger subgroup consisted of 54 people under the age of 18, another group of age above 18 numbered 37 participants. At the preliminary stage, patients with schizophrenia, organic mental disorders, etc were excluded. Based on the clinical and psychopathological assessment, 3 clinical groups were identified. The first group (n=50) consisted of patients under 18 years old with different subtypes of pubertal behavioral disorders (ICD-10 F91) and patients with emotionally unstable personality disorder (F60.3). The second group is represented by patients with mild or moderate depressive episodes (F32). The third group included patients with various eating disorders.

RESULTS

The selected groups did not differ by the age of patients, the age of onset of self-injurious behavior and its duration. There were also no differences in the leading types of NSSI depending on gender, age subgroup, or clinical diagnosis, which confirms the currently prevailing view on NSSI as a transnosological phenomenon. The motives of NSSI also did not differ depending on the nosological form. Gender and age differences in the motives of NSSI were revealed. In male patients, the motive of «sensations seeking» (p=0.037) and «peer-bonding» (p=0.036) significantly prevailed. In the younger age subgroup, the motives of «self-punishment» (p=0.032) and «peer-bonding» (p=0.026) prevail.

CONCLUSIONS

The nosological non-specificity of NSSI, which is manifested in the similarity of the age of onset, duration, types of NSSI and motives for committing them in different disorders, allows us to consider this phenomenon as a separate dimensional characteristic of a mental illness, more dependent on internal patterns, gender and age characteristics than on its nosological affiliation.