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. Author manuscript; available in PMC: 2011 Sep 3.
Published in final edited form as: J Proteome Res. 2010 Sep 3;9(9):4620–4627. doi: 10.1021/pr1003449

Table 3-b.

Three disease associated metabolites (hippurate, alanine and formate)

Metabolite Logistic coefficient (|β|) Power
FP rate
Hippurate 1.0 Alanine 2.0 Formate 4.0
O2PLS Bootstrap 50/50 18% 12% 94% 79.6%
100/100 36% 26% 100% 73.2%
200/200 60% 46% 100% 68.8%

O2PLS Permutation 50/50 14% 8% 92% 65.9%
100/100 26% 22% 100% 49.8%
200/200 34% 28% 100% 46.9%

T-test Bonferroni 50/50 0% 0% 38% 2.0%
100/100 0% 2% 100% 0.5%
200/200 2% 4% 100% 9.3%

T-test exact MWSL 50/50 0% 0% 70% 1.2%
100/100 4% 4% 100% 2.5%
200/200 4% 10% 100% 13.5%

T-test general MWSL α′ = 1.5 × 10−6 50/50 0% 0% 54% 1.0%
100/100 0% 2% 100% 1.3%
200/200 4% 8% 100% 11.7%