. Author manuscript; available in PMC: 2021 Aug 1.

Published in final edited form as: Clin Neuropsychol. 2020 Mar 24;34(6):1226–1247. doi: 10.1080/13854046.2020.1740324

Table 5.

Neuropsychological composite scores (z-scores) by group.

Variables	mTBI BDNF Met+^a (n=30)		mTBI BDNF Met−^a (n=45)		MC BDNF Met+^a (n=19)		MC BDNF Met−^a (n=44)
	M	SD	M	SD	M	SD	M	SD
Memory Composite	0.03	0.71	−0.21	0.73	−0.12	0.92	0.26	0.60
Executive Functioning Composite	0.08	0.50	−0.19	0.58	−0.11	0.66	0.17	0.66
Visuospatial Speed Composite	−0.05	0.74	−0.08	0.67	0.03	0.57	0.04	0.65

Abbreviations: mTBI = mild traumatic brain injury; BDNF = brain-derived neurotrophic factor; MC = military control.

Notes:

The “Met+” grouping refers to those homozygous (Met/Met) and heterozygous (Met/Val) for the Met*A allele, and the “Met−“ grouping refers to those homozygous (Val/Val) for the Val*G allele. Values presented in the table are unadjusted means and standard deviations for the three cognitive composite scores.