Skip to main content

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.

From: Detection of transcriptional difference of porcine imprinted genes using different microarray platforms

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