Table 1.

Demographics of BDNF genotype groups

	Met carriers (n = 16)	Val/Val carriers (n = 16)	p*
Age (years)	26.9 ± 8.5 (20–49)	26.5 ± 8.1 (19–49)	0.91
Education (years)	16.6 ± 2.2 (14–21)	16.2 ± 2.8 (10–21)	0.31
Right-handedness (%)	92.5 ± 9.3 (80–100)	95.6 ± 6.3 (80–100)	0.31
BDI	3.6 ± 4.8 (0–15)	3.9 ± 4.8 (0–18)	0.91

Data expressed as mean ± SD and [range (minimum to maximum)]. Note that genotype groups did not differ with regard to age, education, handedness, and scores on the Beck's Depression Index (BDI). Handedness score were determined according to the Edinburgh Handedness Inventory.

*Paired t test or Wilcoxon rank test, as appropriate.