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


Tsai et al. BMC Genomics 2006 7:328   doi:10.1186/1471-2164-7-328

Open Data