Fisher's method implementation, used to combine the results from
several independent tests bearing upon the same overall hypothesis.
Usage
chiCombP(Pvalues)
Arguments
Pvalues
an array of pvalues
Value
The chi-square final pvalue
Details
Pvalues will not be corrected for multiple testing. The sum of
the log of the pvalues is determined (S). -2*S has a chi-square
distribution with 2k degrees of freedom, where k is the number of
tests being combined. A chi-square test is then performed.