Objectives:
The aim of the study was to assess the prevalence of adult separation anxiety disorder (ASAD) in an outpatient psychiatric network.
Background:
Studies of the prevalence of ASAD in a cohort of patients with anxiety and depressive disorders have not been previously conducted in Russia.
Materials and Methods:
Cohort of 557 outpatients ages 18 and above was assessed by the Adult Separation Anxiety Questionnaire (ASA-27). Patients who scored ≥22 by the ASA-27 were examined using the clinical-psychopathological method, the Structured Clinical Interview for Separation AnxietySymptoms (SCI-SAS). The comorbid pathology was evaluated using the Mini-International Neuropsychiatric Interview (MINI).
Results and Conclusions:
Of the 557 patients examined using ASA-27, 138 patients (24.8%) scored of 22 points and above (37,2±12,4) and had some subclinical symptoms ASAD. The clinical-psychopathological analysis of these patients, as well as the use of SCI-SAS, allowed to estimate the prevalence of SAD in adults of 5,4% (30 patients). In the majority of patients (60%) ASAD first manifested in childhood. The average age of onset in these ASAD patients was 8,4±3,9. In 40% of cases, the patients had first onset of the disorder in adulthood, with an average age of 34,4±9,9 years. Data on concomitant disorders indicate high rates of comorbidity with other mental disorder: 63.3% of cases with mood disorders, 40% with anxiety disorders, 6.7% with schizotypal disorders. 
The results of this study show that there is a high prevalence of ASAD among outpatients. ASAD is associated with different comorbidities. Further study of ASAD is needed to develop approaches to managing patients with ASAD.

01 - PREVALENCE OF SEPARATION ANXIETY DISORDER IN ADULT OUTPATIENTS IN RUSSIA