SAS - Preloadfmt - reporting values not in data

SAS_preloadfmt_tabulate.sas

/*This demonstrates how to ensure all levels are in your report
using the preloadfmt option*/


data raw;
  input person firsttest $ secondtest $;
  datalines;
  1 Good Good
  2 Poor Good
  3 Good Bad
  4 Poor Bad
  5 Poor Poor
;
run;

proc format;
value $ test_values 
   "Good" = "Good"
   "Poor" = "Poor"
   "Bad" = "Bad";
 run;
 

proc tabulate data=raw;
class firsttest secondtest / preloadfmt;
table firsttest, secondtest / misstext='0' printmiss;
format firsttest secondtest $test_values.;
run;