Table 1.

Demographic factors and cognitive performance by rs1625579 genotype.

	Mean ± SD		T or χ2	P
	GT	TT
For the N-back task fMRI data
N	24	146	–	–
Gender (male/female)	18/6	109/37	0.001	0.971
Age (years)	27.46 ± 5.20	26.90 ± 5.40	0.47	0.636
Education (years)	13.25 ± 3.00	13.31 ± 3.27	−0.09	0.932
IQ	116.33 ± 9.10	114.77 ± 11.34	0.64	0.523
2-Back (accuracy)	0.92 ± 0.08	0.88 ± 0.15	1.41	0.162
2-Back (RT)	363.49 ± 144.13	355.42 ± 111.65	0.31	0.754
For the resting-state fMRI data
N	22	142	–	–
Gender (male/female)	16/6	104/38	0.003	0.960
Age (years)	27.82 ± 5.27	26.87 ± 5.43	0.77	0.443
Education (years)	13.41 ± 3.08	13.33 ± 3.28	0.10	0.920
IQ	116.64 ± 9.24	114.25 ± 11.54	0.92	0.357
For the DTI data
N	25	152	–	–
Gender (male/female)	18/7	114/38	0.10	0.750
Age (years)	27.56 ± 5.12	26.95 ± 5.52	0.51	0.608
Education (years)	13.36 ± 2.98	13.38 ± 3.33	−0.04	0.972
IQ	116.52 ± 8.92	114.61 ± 11.46	0.79	0.429

RT: reaction time.