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Table 2 Correlation coefficient analysis between direct and reconstructed expression ratios.

From: Evaluation of reference-based two-color methods for measurement of gene expression ratios using spotted cDNA microarrays

  Kidney vs. Breast Prostate vs. Breast Prostate vs. Kidney
  Pearson Spearman n Pearson Spearman n Pearson Spearman n
Direct vs. RefOligo 0.47 0.45 672 0.56 0.53 671 0.26 0.22 464
Direct vs. RefPool 0.48 0.43 643 0.58 0.57 632 0.31 0.19 445
Direct vs. One-Color 0.45 0.42 669 0.53 0.49 671 0.28 0.25 464
Only ratios from spots with intensity values 2 SD above the average slide background were used to calculate Pearson's correlations or Spearman's rank-correlations. The number of intensity values used in each correlation analysis is shown (n). All Pearson correlation values were statistically significant (p-value for rejecting Ho: r = 0 << 10-5).