Hadamard Matrix

If you specify the VARMETHOD=BRR(PRINTH) method-option in the PROC SURVEYMEANS  statement, PROC SURVEYMEANS displays the Hadamard matrix that is used to construct replicates for BRR variance estimation.

If you provide a Hadamard matrix with the VARMETHOD=BRR(HADAMARD=) method-option but the procedure does not use the entire matrix, the procedure displays only the rows and columns that are actually used to construct replicates.