mat rownames A = "eq1:row1" "eq1:row2" "eq2:row1" "eq2:row2" esttab matrix(A) esttab matrix(A), unstack compress set seed 123 matrix A = matuniform(4,4) mat coleq A = eq1 eq1 eq2 eq2 mat roweq A = eq1 eq1 eq2 eq2 esttab matrix(A), eqlabels(,merge)