Table 2

Estimation of false discovery rate and the number of false positives for three different p-value thresholds. The estimates result from a permutation procedure that is detailed in the material and methods section.

p-value threshold
number of detected metabolites
False discovery rate (FDR)
Estimated number of false positive metabolites

0.05
120
8.2%
10
0.01
82
2.3%
2
0.00024
24
0.2%
0

Denkert et al. Molecular Cancer 2008 7:72   doi:10.1186/1476-4598-7-72