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Table 1 Statistics of datasets from TCGA and GEO databases

From: Identification of potential biomarkers related to glioma survival by gene expression profile analysis

  TCGA (RNA-Seq) GEO GSE16011) GEO (GSE4412) GEO (GSE4271)
GBM 154 159 59 76
LGG 516 109 26 24
GBM with surv. Info. 152 155 59 56
LGG with surv. Info. 511 109 26 21
  1. When the analysis of gene expression must be correlated to survival information, the sample size of datasets would be possible to become smaller