Table 3.

Average Pearson and Spearman correlations were calculated between normalized intensities for control technical replicates. All correlations are significant at p < 0.0001. These results show strong correlation both within and between the two Affymetrix microarrays, but lower correlation between the porcine glass and the Affymetrix platform.

Sequence-oriented Inter/Intra-Platform Correlation
	Correlation Coefficients of Matching Probes
	Affymetrix Human		Affymetrix Porcine		Porcine Glass
	Pearson	Spearman	Pearson	Spearman	Pearson	Spearman
Affymetrix Human	0.983	0.985	0.842	0.837	0.555	0.560
Affymetrix Porcine	0.842	0.837	0.998	0.998	0.618	0.624
Porcine Glass	0.555	0.560	0.618	0.624	0.837	0.827
	Correlation Coefficients of Matching Probes with Complete Overlap
	Affymetrix Human		Affymetrix Porcine		Porcine Glass
	Pearson	Spearman	Pearson	Spearman	Pearson	Spearman
Affymetrix Human	0.987	0.979	0.980	0.970	0.628	0.588
Affymetrix Porcine	0.980	0.970	0.997	0.996	0.633	0.620
Porcine Glass	0.628	0.588	0.633	0.620	0.844	0.827