A Case-Control Study and Meta-Analysis Reveal BDNF Val66Met Is a Possible Risk Factor for PTSD

Table 3

Association of genotype frequencies of BDNF Val66Met for participants with and without PTSD.

Val66Met	Genotype counts (%)			value	Allele count
	Val/Val	Val/Met	Met/Met		Val	Met
PTSD	99 (65.62)	46 (30.5)	6 (4.0)		244	58
No PTSD	71 (67.0)	28 (26.4)	7 (6.6)		170	42
Odds ratio ( value)	1	1.178 (0.811)	0.615 (0.639)		0.96; CI 95% [0.62; 1.50]	1

Note. value determined by Pearson’s test; value determined by Mantel-Haenszel test for trend in a given direction.