Ranking of the 15 most upregulated gene sets analyzed with GSEA 2.0.1.

Gene sets with a FWER<0.05 are shown. All genes on the chip were ranked by difference in expression after pioglitazone treatment of PCOS patients using the t-test. An enrichment score (ES) was assigned to each gene, and the maximum ES (MES) was calculated for each gene set. NES: Enrichment score normalized for differences in gene set size. FDR q-value: False Discovery Rate. FWER p-value: Family Wise Error Rate.