Table 1.
Demographic and behavioral data of the 256 participants in FCD analysis.
| COMT rs4633 genotypic group | F/χ2 value | P-value | |||
|---|---|---|---|---|---|
| CC (n = 116) | TC (n = 109) | TT (n = 31) | |||
| Age (years) | 22.75(2.355) | 22.65(2.522) | 22.61(2.431) | 0.064 | 0.938 |
| Education (years) | 15.89(1.883) | 15.61(2.211) | 14.58(1.893) | 5.070 | 0.007 |
| Gender (M: F) | 46/70 | 51/58 | 17/14 | 2.674 | 0.263 |
| FIQ | 118.91(7.854) | 116.83(8.712) | 111.71(11.004) | 8.618 | 2.39 × 10−4 |
| VIQ | 119.37(8.446) | 117.89(9.492) | 110.65(13.331) | 10.171 | 5.6 × 10−5 |
| PIQ | 113.97(9.479) | 112.02(10.680) | 110.61(10.465) | 1.811 | 0.166 |
| 2-back accuracy | 89.53(5.38) | 88.35(5.50) | 86.95(5.46) | 3.178 | 0.043 |
| 3-back accuracy | 82.77(6.21) | 81.49(6.52) | 79.32(6.19) | 3.852 | 0.023 |
| PPE | 16.52(9.69) | 14.94(8.94) | 18.68(11.85) | 1.989 | 0.139 |
| FD | 0.08(0.04) | 0.09(0.05) | 0.09(0.03) | 1.414 | 0.245 |
Data are presented as mean (standard deviation), otherwise as indicated. COMT, catechol-O-methyltransferase; F, female; FD, framewise displacement; FIQ, full-scale intelligence quotient; M, male; PIQ, performance intelligence quotient; VIQ, verbal intelligence quotient; PPE, percentage of perseverative errors.