Help with generating a complex table

[Unsaf]

Hello, new to SAS here. 

Currently I have a dataset as follows:

               centre          Variable1        Variable2        Variable3 ... VariableN

Subject1   1-15             0 or 1             0 or 1             0 or 1          0 or 1

Subject2   1-15             0 or 1             0 or 1             0 or 1          0 or 1

.

.

.

Subjectn

My goal is to report the frequency of each variable by centre to generate a table where:

                  centre 1    centre 2 ... centre 15

Variable1    Freq 0       Freq 0        Freq 0

                   Freq 1       Freq 1        Freq 1

Variable 2   Freq 0       Freq 0        Freq 0

                   Freq 1       Freq 1        Freq 1

.

.

.

Variable n   Freq 0       Freq 0        Freq 0

                   Freq 1       Freq 1        Freq 1

Thanks for any help or support. Cheers. 

[Astounding]

Here's an approach that should at least be in the ballpark:

proc tabulate data=have missing;
   class variable: centre;
   tables variable: , centre;
run;

There are lots of ways to customize the format of the output in PROC TABULATE.