Allele frequencies

ADHD n (%)

Control n (%)

p-value

G

A

Total

203

199

402

95

103

198

0.562

Genotype frequencies

n (%)

n (%)

p-value

C/C

C/G

G/G

Total

48

107 (53.2%)

46

201

22

52 (52.5%)

25

99

0.886

Presence or absence of C and G alleles

n (%)

n (%)

p-value

C/C + C/G

155 (77.1%)

74 (74.7%)

0.650

G/G + C/G

153 (76.1%)

77 (77.7%)

0.749