See example below,

data t1;
  do i=1 to 30;
    x=rannor(123);e=rannor(123);
y=1+1*x+rannor(123);
参考sas小数位数设置讨论https://bbs.pinggu.org/thread-932688-1-1.html
output;
  end;
run;

proc template;
   define column Common.pValue;
      notes "Default p-value column";
      just = r;
      format = pvalue16.14;
   end;
run;

proc reg data=t1;
model y=x;
run;
quit;

proc univariate data=t1;
var x e;
run;