I want to extract submatrices of the coefficient vector and the var/cov matrix which are returned following a probit estimation in which I have factor and interaction variables. The matrices e(b) and e(V) contain all results, including those relating to the base variables, which are all zero, of course. I want a vector and a matrix which contain only the coefficients which appear in the output table, ie those with column and row names which do not contain "*b." Is there an easy way to do this without having to explicitly name every row/column which I want to keep?