Carpenter's Complete Guide to the SAS REPORT Procedure

154 Carpenter’s Complete Guide to the SAS REPORT Procedure

BEFORE and AFTER. This would also be true if there were a COMPUTE AFTER statement; it

would execute last.

Because the report is processed one row at a time from left to right and from top to bottom, you

need to stage events so that information is available when you need it. Primarily this means that if

you need to use a value, that value has to be available in the computed summary information or to

the left on the current row. In fact, this is the sole purpose of the COMPUTE BEFORE

p block.

In our example, on every report row, we need to know the overall number of patient visits in ...