Use and misuse of the emergency room by patients with eating disorders in a matched-cohort analysis: What can we learn from it?

We examined the pattern of access to hospital emergency room (hER) in 2018-2021 among patients with eating disorders (ED) from Florence, Italy, diagnosed during 1994-2018, using a matched cohort design. We included 902 ED patients and an equal number of sex-, age-, and residence-matched individuals. We fitted conditional Poisson regression models with robust variance estimator to estimate incidence rate ratios (IRR) and 95% confidence intervals. ED patients accessed hER more than twice as often as matched individuals: the IRR was 2.11 (1.21-3.70), 2.02 (1.36-3.00), and 2.49 (1.71-3.61) among AN, BN, and BED patients. Factors associated with increased hER use were older age (≥40 years; for AN patients, also younger age, <20 years), BMI ≤ 16 kg/m2 (for AN), and psychopathological severity. The rise in access to hER was particularly marked during the early phases of the COVID-19 pandemic and declined only partially thereafter. Acute psychiatric symptoms and non-specific medical conditions represented the main causes of increased access to hER. Use of hER was more often inappropriate among ED patients than matched individuals. Integration of primary and mental health care may be necessary to counteract the high and often inappropriate use of hER by patients with ED.

Mortality and care of eating disorders.

INTRODUCTION: Eating disorders (EDs) are considered serious mental illnesses, with one of the highest lethality among psychiatric disorders, even though the issue of mortality due to these conditions is still controversial. The present study was aimed at comparing the mortality rate in a cohort of ED patients representative of the geographic area with that of the age and gender-matched general population of central Italy. METHODS: Patients were enrolled between 1994 and 2018, among those attending the eating disorders treatment network of the Florence area (EDTN), which is a regional multidisciplinary treatment reference center for EDs covering the clinical population of the metropolitan Florence area (Italy). The life status of participants was determined through linkage with the Regional Mortality Registry. RESULTS: A total of 1277 individuals with EDs were included, including 368 with Anorexia Nervosa (AN), 312 with Bulimia Nervosa (BN), and 597 individuals with Binge Eating Disorder (BED). Twenty-two patients (1.72%) died, during a median follow-up of 7.4 years. The mortality rates among ED patients did not significantly differ from that of the general population of the same age and sex with a Standardized Mortality Ratio (SMR) of 1.19, 95% CI 0.79-1.81. Only among BN patients, the mortality was significantly increased after 10 years from clinical evaluation (SMR 11.24, 95% CI 3.62-34.84). CONCLUSION: The low mortality in EDs, compared to published studies, might be due to the EDTN treatment strategy, based on a large network which makes an integrated multidisciplinary team available for almost all the patients with EDs of the geographical area.