International Scholarly Research Notices / 2017 / Article / Tab 2

Research Article

DRD4 Gene Polymorphisms as a Risk Factor for Children with Attention Deficit Hyperactivity Disorder in Iranian Population

Table 2

Demographics of the study sample.

IndexADHD ()Control () value

Age (year)6.883 ± 2.276.98 ± 2.500.3
Gender (boy/girl)108/2284/46<0.001
Percentage of ADHD boys83610.04
Children of first-degree family marriage (%)564<0.001

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