Table 3.

Hippocampal Volume [mm³] (Mean ± SD) at Each Time Point (TP) during Abstinence by BDNF Genotype

	Val/Val	Met carriers	% Difference	p value	ES (Cohen’s d)
TP1a	2354 ± 302	2201 ± 301	6.5%	0.126	0.51
TP2b	2318 ± 278	2221 ± 250	4.2%	0.182	0.38
TP3c	2393 ± 211	2156 ± 218	9.9%	0.016*	1.11

^*p < .05

^aSubset of 26 Val, 15 Met Carriers

^bSubset of 42 Val, 21 Met Carriers

^cSubset of 16 Val, 9 Met Carriers