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Table 5 Number of very significant probe sets lost after filtering in smaller experiments.

From: Effects of filtering by Present call on analysis of microarray experiments

  Probe sets at p ≤ 0.001 Probe sets at p ≤ 0.001 lost by filtering at selected thresholds
# samples Unfiltered > 0% ≥ 25% ≥ 50% ≥ 75% 100%
3 59 10 10 11 12 13
4 165 12 12 14 16 20
5 333 12 14 16 21 28
6 528 12 14 18 27 43
7 718 14 17 25 40 68
8 897 16 21 32 50 99
  1. Number of probe sets at p ≤ 0.001 found in the unfiltered IFN data, and the number of those lost by filtering at each of several fraction Present thresholds, for experiments with 3 to 8 samples per treatment group.
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