Running a power analysis on 9.4 to determine sample size. Comparing a new testing method to a "gold standard" test which is correct 100% of the time on a binary, yes/no outcome. Will accept the new method as "noninferior" if it matches the gold standard 90% of the time. One-sided Alpha = .05 with 90% power.  I'm having difficulty with the coding. I went with what I thought the SAS manual recommended for the above parameters, but it won't give me an N ("ERROR: NTOTAL is not available for TEST=EXACT").    PROC POWER; ONESAMPLEFREQ  TEST = EXACT METHOD=EXACT NULLPROPORTION=.9 PROPORTION = .8 TO .95 BY .01 SIDES = U POWER = .9 ALPHA = .05 NTOTAL = .; PLOT X = EFFECT' RUN; Any help would be appreciated. Thanks.     ... View more