Can we improve the detection of social anxiety and obsessive-compulsive disorders in early psychosis?

Poster B3, Friday, October 21, 11:30 am - 1:00 pm, Le Baron

Marc-André Roy1,2,3, Amélie Achim2,3, Sophie L'Heureux1,3, Anne-Pierre Bouffard1,3, Marianne DeBonville1,3, Catherine Lehoux1,2, Chantal Vallières1,2, Marie-France Demers1,2,4; 1Clinique Notre-Dame des Victoires, CIUSSS-CN, Québec, PQ, 2CRIUSMQ, Québec, PQ, 3Département de Psychiatrie et Neurosciences, Faculté de Médecine, Université Laval, Québec, PQ, 4Faculté de Pharmacie, Université Laval, Québec

Our previous meta-analysis (Achim et al SZBull 2011) on anxiety disorders in schizophrenia Spectrum psychotic disorders yielded prevalence rates of 14.9% for social anxiety disorders (SAD) and 12.1% for obsessive-compulsive disorders (OCD). We also observed that studies using more detailed assessment of anxiety disorders yielded higher rates. Furthermore, we recently reported (Roy et al, SZRes, 2015) current prevalence rates of 48.8% for SAD and 10% for OCD in 80 subjects from an early intervention program. These subjects were assessed using an interview based on the SCID supplemented with probes from the Liebowitz Social Anxiety Scale (LSAS) to assess SAD and the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) to assess OCD. The goal of the present report is to examine the extent to which using the LSAS and the Y-BOCS probes can increase detection of SAD and OCD respectively. In a first step, the SCID probes were used to rate the A criteria for each diagnosis; in a second step of the same interview, probes for the LSAS and Y-BOCS were added to rate criterion A again. Other DSM criteria (e.g., diagnostic hierarchy: not better accounted for... ) were also probed extensively. Using solely the SCID probes we observed rates of 28.8% for SAD and 3.8% for OCD which increased to 48.8% and 10.0% after adding the LSAS and Y-BOCS probes respectively. Hence, these results suggest that using more extensive probing to detect SAD and OCD symptoms combined with detailed assessment of diagnostic hierarchy criteria may lead to more sensitive diagnostic detection.

Topic Area: Diagnosis and Phenomenology

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