Table 1.

Group characteristics. Data for continuous variables are presented as group average ± SEM

Group	Younger	Older
Number	20	19
Sex	15 M, 5 F	15 M, 4 F
Race	20 W	19 W
Age (years)*	29.75 ± 2.04	69.32 ± 2.05
PMI (hours)	17.00 ± 1.47	17.58 ± 1.61
Brain pH*	6.65 ± 0.05	6.78 ± 0.05
RIN	8.22 ± 0.14	8.07 ± 0.15
BDNF expressiona*	24.91 ± 0.68	20.06 ± 0.79
SST expressiona*	675.37 ± 24.67	385.97 ± 38.34

F female, M male, PMI postmortem interval, RIN RNA integrity number, W white, B black

*Group averages are significantly different (p < 0.05)

^aMicroarray signal intensities