Table 1. Characteristics of studies composing the prefrontal cortex gene expression compendium.

Study(Citation)	Dataset	Platform	Region	Types of sample	Sample (young20-40)	Sample (old60-90)
Lu T, 2004	GSE1572	Affymetrix Human Genome U95 Version 2 Array	Boston, MA USA	human frontal cortex tissue	9	12
Berchtold NC, 2008	GSE11882	Affymetrix Human Genome U133 Plus 2.0 Array	Irvine, CA USA	Human superior frontal gyrus brain tissue	13	18
Colantuoni C, 2011	GSE30272	Illumina Human 49K Oligo array (HEEBO-7 set)	Baltimore, MD USA	human prefrontal cortex tissue	52	22
Lu T, 2014	GSE53890	Affymetrix Human Genome U133 Plus 2.0 Array	Boston, MA USA	human frontal cortex tissue	13	13
Chen CY, 2016	GSE71620	Affymetrix Human Gene 1.1 ST Array [transcript (gene) version]	Pittsburgh, PA USA	human prefrontal cortex tissue	74	90