help uniquestrata


uniquestrata -- Check that the specified variables collectively account for every observation


uniquestrata varlist


uniquestrata takes a varlist of strata variables and calculates whether all combinations of the levels of those strata variables add up to the total number of observations--no more, no less. If not, the program returns error 9.

Mathematically, it simply multiplies together the number of distinct levels of each strata variable given in varlist and compares that to the