Table 1.

Summary of datasets used in this study.

Accession number	# of controls	# of UC cases	Description of samples	Platform	# of genes (features)	Usage
GSE115218,19	4	4	Mucosal biopsies from uninflammed colonic tissues	Affymetrix Human Genome U133A Array and Affymetrix Human Genome U133B Array	19,353	Model selection
GSE1122320	24	25	Biopsies from uninflammed sigmoid colon	Agilent-012391 Whole Human Genome Oligo Microarray G4112A	18,626	Model selection
GSE2261921,24	10	10	Mucosal colonic tissue from discordant twins	Affymetrix Human Genome U133 Plus 2.0 Array	22,189	Model selection
GSE75214-active22	11	74	Mucosal colonic biopsies from active UC patients and from controls	Affymetrix Human Gene 1.0 ST Array	20,358	Model evaluation
GSE75214-inactive22	11	23	Mucosal colonic biopsies from inactive UC patients from controls	Affymetrix Human Gene 1.0 ST Array	20,358	Model evaluation