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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Osteoarthritis Cartilage. 2009 Feb 15;17(7):930–938. doi: 10.1016/j.joca.2009.02.001

Table 4.

P-value of centroid profile separation. P-values were obtained through student T-test, comparing centroid to centroid Euclidean distance. Degrees of freedom were taken as the number of genes in each group.

P-value of Centroid Separation Centroid 1 Centroid 2 Centroid 3 Centroid 4
Centroid 2 0.032
Centroid 3 0.017 0.034
Centroid 4 0.007 0.073 0.016
Centroid 5 0.001 0.015 0.006 0.042