Proc tabulate: Print column with no observation

[Barkat]

I have the following data set.

data have;
informat Week mmddyy8.;
input ID Group $ Week  Disease $ Result $   ;
Format week date7.;
cards;
01 A 12/03/22 X Pos 
02 A 12/03/22 Y Pos 
03 B 12/17/22 Z Neg
04 A 12/17/22 X Pos 
05 B 12/24/22 Y Pos
06 B 12/24/22 Z Neg
07 C 12/24/22 X Neg 
08 A 12/31/22 Y Pos
09 A 01/14/23 Z Neg
10 B 01/14/23 X Pos 
11 A 01/21/23 Y Pos
12 A 01/21/23 Z Neg
13 A 01/14/23 Z Neg
14 C 01/14/23 X Neg 
15 A 01/21/23 Y Pos
16 C 01/21/23 Z Neg
17 A 01/14/23 Z Neg
18 C 01/14/23 Y Neg 
19 B 01/21/23 Y Pos
20 C 01/21/23 Z Neg
;

I ran the code below to create a table. 

PROC TABULATE data=have missing ;
CLASS Disease Result ;
TABLE Disease all="Total",  Result * N='' ;
Where group = "C" ;
RUN;

I do not see the  "Pos" column in the output table since there is no "Pos" in the "result" column where group="C". However, I would like to keep the "Pos" column in the output with zero value.

[data_null__ · Accepted solution]

I think a pre-Loaded format is one way.  With an extra option or two.

data have;
informat Week mmddyy8.;
input ID Group $ Week  Disease $ Result $   ;
Format week date7.;
cards;
01 A 12/03/22 X Pos 
02 A 12/03/22 Y Pos 
03 B 12/17/22 Z Neg
04 A 12/17/22 X Pos 
05 B 12/24/22 Y Pos
06 B 12/24/22 Z Neg
07 C 12/24/22 X Neg 
08 A 12/31/22 Y Pos
09 A 01/14/23 Z Neg
10 B 01/14/23 X Pos 
11 A 01/21/23 Y Pos
12 A 01/21/23 Z Neg
13 A 01/14/23 Z Neg
14 C 01/14/23 X Neg 
15 A 01/21/23 Y Pos
16 C 01/21/23 Z Neg
17 A 01/14/23 Z Neg
18 C 01/14/23 Y Neg 
19 B 01/21/23 Y Pos
20 C 01/21/23 Z Neg
;
proc format; value $result(notsorted) 'Neg'='Neg' 'Pos'='Pos'; quit;
PROC TABULATE data=have missing;
   CLASS Disease;
   class Result / preloadfmt order=data;
   format result $Result.;
   TABLE Disease all="Total",  Result * N='' / printmiss misstext='0';
   Where group = "C" ;
   run;