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Table 1.   Demographic and clinical features of the sample

age (y) % Male % Familial % syndromic Geographic ancestry
ASD (n= 260) 11.8 ± 7.6 80 9.6 8.5 France and Italy (n=29)
MR (n= 247) 13.2 ± 11.6 64.8 34 62 North western France
SZ (n= 236) 38 ± 11 66.8 23.7 / North western France
Controls (n= 236) 39.5 ± 16.8 43.8 / / North western France

ASD: autism spectrum disorder, SZ: schizophrenia and schizoaffective disorder, MR: mental retardation

Arch Gen Psychiatry. 2009 September; 66(9): 947–56.
doi: 10.1001/archgenpsychiatry.2009.80.