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Table 1 Demographic and clinical characteristics of the studied group

From: Prevalence and risk factors of autism spectrum disorders in preschool children in Sharkia, Egypt: a community-based study

Variable Cases
(n = 3722)
No. %
Age group   
 2-3 years 1973 53
 4-5 years 1749 47
Sex   
 Male 1887 50.7
 Female 1835 49.3
Risk   
 Low risk 2691 72.3
 Medium risk 927 24.9
 High risk 104 2.8