Figure 2From: Post hoc pattern matching: assigning significance to statistically defined expression patterns in single channel microarray dataComplexity increases with number of treatment groups. Quadratic increase between the number of treatment groups (X axis) and the number of pairwise comparisons (right Y axis) is shown in black. The exponential increase in the number of post hoc patterns (left Y axis) is shown in gray. Note that by the time there are seven treatment groups, we predict nearly a billion different patterns. However, due to the lack of independence among the comparisons, the actual number of possible comparisons generated in 100 iterations of a 10,000 gene, 30 array model data system (dotted gray line) is considerably less.Back to article page