Prev: Proc report line statement - Print footnotes on page 1
Next: select first obs for string
From: elodie on 19 Feb 2010 16:42
Hi everyone,

I have been trying to generate a randomization schedule for permuted-
block randomization schedule and am having no luck with PROC PLAN. I
did it manually before, but was hoping for simplification.

I am looking to assign 60 patients in a randomized trial to two
treatments (1 and 2). The plan calls for permuted-block randomization
with 6 patients per block.

A condition is imposed where the two treatments are balanced within
three disease stage groups as well as overall.

It is the first time I use proc plan, and my syntax is pretty useless
at this point. I would appreciate it if someone could give me some
help.

proc plan seed=32807;
factors block=10 ordered cancerstage=3 ;
treatments treatment=3 random;*/
run;
quit;

Thanks a lot in advance.
From: data _null_; on 19 Feb 2010 17:22
On Feb 19, 3:42 pm, elodie <elodie.gill...(a)gmail.com> wrote:
> Hi everyone,
>
> I have been trying to generate a randomization schedule for permuted-
> block randomization schedule and am having no luck with PROC PLAN. I
> did it manually before, but was hoping for simplification.
>
> I am looking to assign 60 patients in a randomized trial to two
> treatments (1 and 2). The plan calls for permuted-block randomization
> with 6 patients per block.
>
> A condition is imposed where the two treatments are balanced within
> three disease stage groups as well as overall.
>
> It is the first time I use proc plan, and my syntax is pretty useless
> at this point. I would appreciate it if someone could give me some
> help.
>
> proc plan seed=32807;
> factors block=10 ordered cancerstage=3 ;
> treatments treatment=3 random;*/
> run;
> quit;
>
> Thanks a lot in advance.

If I understand correctly this is RCB with 2 treatments. Three
plots(subjects) per trt per block, for 6 plots per block.

If so I believe this PROC PLAN will suffice.

proc plan seed=32807;
factors block=10 ordered treatment=6 i=1;
treatments subjid=1 of 60 perm;
output out=plan(drop=i) treatment cvals=('A' 'A' 'A' 'B' 'B' 'B');
run;
quit;
proc print;
by block;
id block;
run;
From: a on 20 Feb 2010 08:58
On Feb 19, 4:22 pm, "data _null_;" <datan...(a)gmail.com> wrote:
> On Feb 19, 3:42 pm, elodie <elodie.gill...(a)gmail.com> wrote:
>
>
>
>
>
> > Hi everyone,
>
> > I have been trying to generate a randomization schedule for permuted-
> > block randomization schedule and am having no luck with PROC PLAN. I
> > did it manually before, but was hoping for simplification.
>
> > I am looking to assign 60 patients in a randomized trial to two
> > treatments (1 and 2). The plan calls for permuted-block randomization
> > with 6 patients per block.
>
> > A condition is imposed where the two treatments are balanced within
> > three disease stage groups as well as overall.
>
> > It is the first time I use proc plan, and my syntax is pretty useless
> > at this point. I would appreciate it if someone could give me some
> > help.
>
> > proc plan seed=32807;
> > factors block=10 ordered cancerstage=3 ;
> > treatments treatment=3 random;*/
> > run;
> > quit;
>
> > Thanks a lot in advance.
>
> If I understand correctly this is RCB with 2 treatments.  Three
> plots(subjects) per trt per block, for 6 plots per block.
>
> If so I believe this PROC PLAN will suffice.
>
> proc plan seed=32807;
>    factors block=10 ordered treatment=6 i=1;
>    treatments subjid=1 of 60 perm;
>    output out=plan(drop=i) treatment cvals=('A' 'A' 'A' 'B' 'B' 'B');
>    run;
>    quit;
> proc print;
>    by block;
>    id block;
>    run;- Hide quoted text -
>
> - Show quoted text -

The statements can be simplified such that the TREATMENTS statement is
not needed.

proc plan seed=32807;
factors block=10 ordered treatment=6 subjid=1 of 60 perm;
output out=plan treatment cvals=('A' 'A' 'A' 'B' 'B' 'B');
run;
quit;
proc print;
by block;
id block;
run;
 | 
Pages: 1
Prev: Proc report line statement - Print footnotes on page 1
Next: select first obs for string