The pcorr routine uses the following formula to compute partial correlations:
t/sqrt(t^2 + N - K -1) where N = Sample size and K = # of X variables
This is not the most intuitive formula in the world, but it works! I would
like to modify the program to compute semipartial correlations. Does
anybody know of a similarly straightforward formula that would do
this? pcorr runs a regress command and then uses the saved estimates to do
its calculations. Thanks for any input.
