Documentation Example 4 for PROC POWER

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/*          S A S   S A M P L E   L I B R A R Y                 */
/*                                                              */
/*    NAME: pwrex04                                             */
/*   TITLE: Documentation Example 4 for PROC POWER              */
/*          (Noninferiority Test with Lognormal Data)           */
/* PRODUCT: STAT                                                */
/*  SYSTEM: ALL                                                 */
/*    KEYS: power                                               */
/*          sample size                                         */
/*          power analysis                                      */
/*          graphs                                              */
/*   PROCS: POWER                                               */
/*    DATA:                                                     */
/*                                                              */
/* SUPPORT: John Castelloe                                      */
/*     REF:                                                     */
/*    MISC:                                                     */
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ods graphics on;

proc power;
   twosamplemeans test=ratio
      meanratio = 0.7 to 1.2 by 0.1
      nullratio = 1.10
      sides     = L
      alpha     = 0.01
      cv        = 0.5 0.6
      groupns   = (300 180)
      power     = .;
   plot x=effect step=0.05;
run;

ods graphics off;