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Table 2 Mean Log2ratio obtained from analysis of five control slides by MAIA and GP.

From: Advanced spot quality analysis in two-colour microarray experiments

   Log2 ratio Calibrated Log2 ratio
Slide Population MAIA GP MAIA GP
Slide 1 Down -1.74(0.10) -1.83(0.11) -1.47 -1.45
  Up 1.26(0.08) 1.14(0.18) 1.53 1.52
Slide 2 Down -2.07(0.11) -2.19(0.13) -1.46 -1.45
  Up 0.92(0.10) 0.79(0.13) 1.53 1.54
Slide 3 Down -1.33(0.13) -1.44(0.15) -1.58 -1.55
  Up 1.75(0.10) 1.60(0.13) 1.50 1.50
Slide 4 Down -1.55(0.15) -1.68(0.18) -1.56 -1.54
  Up 1.53(0.12) 1.35(0.17) 1.51 1.49
Slide 5 Down -1.44(0.06) -1.48(0.12) -1.43 -1.44
  Up 1.49(0.04) 1.45(0.19) 1.50 1.49
  1. The mean Log2 ratio obtained from analysis of five control slides by MAIA and GP for down- and up- notated populations of features with expected Log2 ratios of -1.58 and 1.58. The standard variation of the mean Log2 ratio is shown in brackets. The p-values from the paired t-test for the Log2 ratios are less than 1.4E-3. The p-values from paired t-test for the calibrated Log2 ratios are in range [1.7E0-7; 0.72]. For the full version of Table 2, including p-values from the paired t-test and estimated errors for the Log2 ratio, see Additional file 3.