Documentation Example 3 for PROC GLMPOWER
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: gmpex03 */
/* TITLE: Documentation Example 3 for PROC GLMPOWER */
/* (Repeated Measures ANOVA) */
/* PRODUCT: STAT */
/* SYSTEM: ALL */
/* KEYS: power */
/* power analysis */
/* sample size */
/* graphs */
/* general linear models */
/* repeated measures */
/* multivariate analysis of variance */
/* PROCS: GLMPOWER */
/* DATA: */
/* */
/* SUPPORT: John Castelloe */
/* REF: */
/* MISC: */
/****************************************************************/
data Pain;
input Treatment $ PainMem0 PainMem1Wk PainMem6Mo PainMem12Mo;
datalines;
SensoryFocus 2.40 2.38 2.05 1.90
StandardOfCare 2.40 2.39 2.36 2.30
;
ods graphics on;
proc glmpower data=Pain;
class Treatment;
model PainMem0 PainMem1Wk PainMem6Mo PainMem12Mo = Treatment;
repeated Time contrast;
power
mtest = hlt
alpha = 0.01
power = .9
ntotal = .
stddev = 0.92 1.04
matrix ("PainCorr") = lear(0.6, 0.8, 4, 0 1 26 52)
corrmat = "PainCorr";
plot y=power min=0.05 max=0.99 yopts=(ref=0.9)
vary (linestyle by stddev, symbol by dependent source);
run;
ods graphics off;