Print the report, suppress the printing of observation numbers,
and print the total number of observations for the selected variables. NOOBS
suppresses the printing of observation numbers at the beginning of the rows.
SUMLABEL prints the BY variable label on the summary line of each. N= prints
the number of observations in a BY group at the end of that BY group and (because
of the SUM statement) prints the number
of observations in
the data set at the end of the report. The first piece of explanatory text
that N= provides precedes the number for each BY group. The second piece of
explanatory text that N= provides precedes the number for the entire data
set.
proc print data=exprev noobs label sumlabel n='Number of observations for the order type: ' 'Number of observations for the data set: ';