Perform Page test

(Non-parametric test of trend)

Function PAGE computes the value of Page test statistic for layout matrix x, with subjects in rows and treatments in columns. Midranks are calculated with Matlab's TIEDRANKS.
Function MCPAGE computes the value of Page test statistic for layout x and B random within-subject permutations of x, aiding a Monte Carlo approximation of an 'exact' test significance level. See the function's help header for an example.