Table 1.
Demographic and clinical characteristics according to SLC6A2 genotype
| GG(n = 46) | GA(n = 35) | AA(n = 6) | p | |
|---|---|---|---|---|
| Age | 9.22 ± 1.89 | 9.14 ± 2.17 | 9.83 ± 1.94 | .7381) |
| Sex | .1672) | |||
| Male (%) | 40(87.0) | 26(74.3) | 6(100.0) | |
| Female (%) | 6(13.0) | 9(25.7) | 0(0) | |
| IQ | 106.87 ± 13.44 | 100.86 ± 18.31 | 111.83 ± 20.63 | .140 1) |
| ADHD Subtype | ||||
| Combined (% of each genotype) | 18(39.1) | 17(48.6) | 4(66.7) | .6092) |
| Inattentive (% of each genotype) | 24(52.2) | 14(40.0) | 2(33.3) | |
| Hyperactive/Impulsive (% of each genotype) | 4(8.7) | 4(11.4) | 0(0) | |
| Comorbidity | ||||
| CD (% of each genotype) | 0(0) | 3(5.7) | 0(0) | .2192) |
| ODD (% of each genotype) | 1(2.2) | 1(2.9) | 0(0) | .9082) |
| Mood (% of each genotype) | 10(21.7) | 8(22.9) | 0(0) | .2622) |
| Anxiety disorder (% of each genotype) | 4(8.7) | 5(14.3) | 1(11.1) | .7422) |
| Tic (% of each genotype) | 7(15.2) | 0(0.0) | 1(16.7) | .0512) |
| ARS scores | ||||
| Total | 31.72 ± 7.97 | 32.89 ± 8.08 | 32.83 ± 7.68 | .796 1) |
| Inattentive | 16.74 ± 3.96 | 16.83 ± 4.44 | 17.67 ± 3.83 | .876 1) |
| Hyperactivity/impulsivity | 14.98 ± 6.81 | 16.06 ± 6.05 | 15.17 ± 5.15 | .752 1) |
1) Data determined using one-way analysis of variance test.
2) Data determined by χ2 test or Fisher's exact test
ADHD, Attention-deficit hyperactivity disorder; ODD, Oppositional defiant disorder; ARS, ADHD rating scale