Table 1.

Sample demographics and rs3918242 genotyping

Analysis	Sample	N	Age	Sex	rs3918242 genotype (CC/TC/TT)	HWE P-value
Structural	Initial	220	33.9 ± 10.7 years	116 female	173/46/1	P = 0.26
				104 male
	Replication	78	30.0 ± 9.5 years	41 female	50/25/3	P = 0.95
				37 male
N-back fMRI	Initial	444	30.4 ± 8.8 years	250 female	340/97/7	P = 0.98
				194 male
	Replication	110	30.2 ± 9.4 years	58 female	74/33/3	P = 0.77
				52 male
N-back MEG	Initial only	190	32.3 ± 10.0 years	106 female	139/50/1	P = 0.12
				84 male