Table 2.

Technical variables for human postmortem brains used in QTL and gene network analyses.

Variable	N (%) or mean (SD)
Age, years	50.8 (14.9)
Range	16–96
Sex
Male	167 (79)
Female	44 (21)
Race
Caucasian	180 (85)
African-American	31 (15)
PMI	17.2 (5.9)
Range	4.8–37.5
pH	6.7 (0.3)
Range	5.8–7.6
RIN	8.0 (0.73)
Range	5.9–9.6

PMI, postmortem interval; RIN, RNA integrity number.