Table 1.

Demographics and TMS details by BDNF genotyping

	Val/Val	Val/Met	§p-val	#Met/Met
N = 45	27 60.0%	16 35.5%	---	2 4.4%
110% group
*N	7	4	---	---
Age (years)	27.7 (±10.1)	26.5 (±9.5)	n.s.	---
Sex (F/M)	5/2	3/1	---	---
Caucasian	4	2	---	---
Asian	0	1	---	---
African-American	3	1	---	---
Scalp-to-coil distance (mm)	17.5 (±2.7)	18.4 (±2.7)	n.s.	---
rMT (%)	49.6 (±7.9)	66.7 (±24.5)	n.s.	---
SI (%MSO)	55.4 (±9.7)	71.2 (±22.5)	n.s.	---
1 mV group
N	19	11	---	2
Age (years)	23.6 (±5.7)	25.4 (±7.0)	n.s	31.5 (±4.9)
Sex (F/M)	10/9	4/7	---	0/2
Caucasian	6	7	---	---
Asian	1	3	---	---
African-American	8	1	---	---
Mix	2	0	---	---
Unknown	2	---	---	2
Scalp-to-coil distance (mm)	18.2 (±2.2)	17.6 (±3.2)	n.s.	15.1 (±2.4)
rMT (%MSO)	48.7 (±8.3)	41.6 (±8.1)	0.050 r=0.36	43.5 (±14.8)
SI (%MSO)	56.4 (±9.7)	49.7 (±9.3)	0.073 r=0.33	51.5 (±20.5)
SI/rMT	116.0 (±7.6)	120.2 (±14.2)	n.s.	117.2 (±7.1)

^*two participants in the 110% group were excluded from further analysis because they were deemed outliers; refer to text for more details.

^#Met/Met carriers excluded from the final analysis because of small sample size

^§P-values from Wilcoxon rank sum test

Abbreviations: F = Female, M = Male, rMT = Resting motor threshold, SI = stimulation intensity, MSO = maximum stimulator output, r = estimate of effect size for Wilcoxon rank sum test; mm = millimeters