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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: J Anxiety Disord. 2010 Dec 27;25(4):513–519. doi: 10.1016/j.janxdis.2010.12.005

Table 1.

Demographics of Youth with OCD and Controls

Controls OCD Test Statistic p-value
N=151(%) N=263(%)
Age at Ascertainment (years) Mean±SD 12.1 ± 3.3 11.9 ± 3.0 t(412)=0.90 0.37
Gender (male) N(%) 87 (58) 164 (62) χ2 (1)=0.90 0.34
Age of OCD onset (years) Mean±SD -- 7.9 ± 0.7 -- --
Age of PTSD onset (years) Mean±SD -- 8.0 ± 3.1 -- --
Social Economic Status (SES) 1.6 ± 0.8 1.5 ± 0.7 z=0.83 0.41