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SAS CODE FOR Permuted block randomization
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Permuted block
randomization may be done using PROC PLAN.
proc plan seed=62146;
factors site=3 ordered block=3 ordered trt=4;
output out=data3 trt nvals=(0 0 1 1);
run;
data data3;
set data3;
b ...
2010-4-17 01:20 - sophiayaya - SAS专版
SAS CODE USING RANDOM ALLOCATION APPROACH
0 个回复 - 1276 次查看
data data2;
seed = 34191;
phi = 0.5;
do site = 1 to 3;
do trt = 0 to 1;
do subj = 1 to 6;
u = ranuni(54469);
output;
end;
end;
end;
drop subj;
run;
proc sort data=data2;
by site u;
run; ...
2010-4-17 01:15 - sophiayaya - SAS专版
一个randomization 的SAS CODE
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Say we have a clinical trial whereby 36 subjects are to be
randomized to either active
treatment or placebo in a 1:1 fashion.
All
randomization will be stratified by site and for simplicity let us a ...
2010-4-17 01:09 - sophiayaya - SAS专版