Sensitivity,Specificity and Youden index

[PhilC]

I have never used Youden's index personally.  It should be easy to calculate inside the data step I provided above.

[Jems]

Yeh i will make use of that possibility.Thank you very much for the support offered.

[PhilC]

I'll add if you want to do this with more than one variable you can do this:

data work.given;
  do i=1 to 300; drop i;
    A=ranuni(0)>0.5;   
    W=ranuni(0)>0.5;   
    x=ranuni(0)>0.5;   
    Y=ranuni(0)>0.5;
    Z=ranuni(0)>0.5;
    output;
  end;
  stop;
run;
PROC TABULATE DATA=&syslast
              OUT=work.Want  ;
  CLASS A W--Z ;
  TABLE W--Z,A * N     ;
  ;
RUN;