Comparison of Merging and Meta-Analysis as Alternative Approaches for Integrative Gene Expression Analysis

Table 2

Number of differentially expressed genes (DEGs) for all individual data sets. The final result of this meta-analysis case is the intersection of the different lists in the last column.

Data set	No. of DEGs^(i)	No. of DEGs	No. of DEGs^(ii)
		(resamp.)	(intersection)
GSE10072	90	74	25
GSE7670	79	52
GSE31547	67	43
GSE19804	158	109
GSE19188	351	284
GSE18842	499	398

⁽ⁱ⁾Number of DEGs found on the complete data set without resampling. ⁽ⁱⁱ⁾Number of DEGs in the intersection of the DEG lists of all single data sets after using resampling.