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Table 2 Summary statistics for variance components of peaks in renal transplant study estimated using crossed analysis of variance.

From: Integrated multi-level quality control for proteomic profiling studies using mass spectrometry

  between class biological other technical day chip spot
Minimum <0.01 0.99 2.53 0.07 0.02 0.17
1st Quartile 0.02 26.16 30.93 2.22 0.24 4.16
Median 0.06 50.96 34.19 3.57 0.72 6.88
Mean 3.02 41.22 39.72 4.32 1.92 9.80
3rd Quartile 1.09 56.61 39.36 5.51 2.35 11.52
Maximum 61.20 71.30 91.03 30.98 18.11 69.57
  1. Variance components are summarised as percentages of the total variance. Therefore the median peak can be characterised as consisting of approximately 49% technical variance (approximately 3.5% day of profile generation, 1% chip the replicate was generated from, 7% spot the replicate was generated from and 55% other sources) and 51% biological variance (approximately 50.95% within biological classes and 0.05% differences between them).