How can I get PROC REPORT in SAS to show values in an ACROSS variable that have no observations?

Question

Using PROC REPORT in SAS, if a certain ACROSS variable has 5 different value possibilities (for example, 1 2 3 4 5), but in my data set there are no observations where that

Answer 1

When push comes to shove, you can do some hacks like this. Notice that there are no missing on SEX variable of the SASHELP.CLASS:

proc format;
  value $sex 'F' = 'female' 'M' = 'male' 'X' = 'other';
run;

options missing=0;
proc report data=sashelp.class nowd ;
  column age sex;
  define age/ group;
  define sex/ across format=$sex. preloadfmt;
run;
options missing=.;
/*
                  Sex
    Age  female  male    other
     11       1       1       0
     12       2       3       0
     13       2       1       0
     14       2       2       0
     15       2       2       0
     16       0       1       0
*/