Wald approximation for the p-values of pairwise comparisons based on the design matrix
ApproxWaldPvalues(Effects, CovMatrix, DesignMatrix, padjust = "fdr")a vector containing the effects
the covariance matrix of the effects
design matrix
method for correcting for multiple testing as in the function p.adjust (default = "fdr", if NULL no adjustments is made)
a vector of p-values.