@oves wrote: Hi, Let's assume: Medicine A heals 60 of of 100. Testing if medicine B is better. Using level 0.05. Wish to find the lowest number of healed to say: Yes, it is better! The answer is 68, but... How to best calculate this in SAS (using EG 7.15)?   oves That's likely some basic math so you could take the formula and calculate it manually but I would likely be checking PROC POWER to see if it could calculate that number. Are you assuming that the groups are equally sized as well? Ie 100 people? I believe the denominator may be important as well. If it heals 68 out of 1000 that's different than 68 out of 100 so you may need to be looking at rates instead.  ... View more

Hi @oves,   If need be, you could define your own power function and use this in place of the exponential operator: proc fcmp outlib=work.funcs.test; function pow(x, y); z=if x=y=0 then 1 else x**y; return(z); endsub; run; options cmplib=work.funcs; data test; input a b; c=pow(a,b); cards; 2 3 0 0 ;   @PaigeMiller: Hilarious! 🙂 This beats "y=(.1+.2-.3)**0;" as a fun answer to @oves's question. ... View more