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Table 2 Observed effect sizes of data from some experiments with Affymetrix microarrays.

From: Statistical implications of pooling RNA samples for microarray experiments

Study Subject # of arrays per group Genome % of genes with effect size ≥ 0.5
1 cell line 9 RGU 34 30.3
2 rat 10 RGU 34 18.1
3 rat 16 RGU 34 21.5
4 mouse 6 MGU 74 16.5
5 human 14 HGU133A 10.6
6 human 25 HGU133A 38.9