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libaiyi
Junior

China,
2018-07-03 09:42

Posting: # 19008
Views: 1,251
 

 Intra-CV in three-treatment, three-period, three-sequence study in SAS [Software]

Hi,

When I try to calculate the intra-CV of three-treatment, three-period, three-sequence study in SAS, there is only one residual in the output. So, how could I find out the intra-CV between T1-R and T2-R respectively? Could I put only T1 and R or T2 and R in the model to get intra-CV respectively to compare which treatment is better?

Thanks in advance. :-D
Helmut
Hero
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Homepage
Vienna, Austria,
2018-07-03 11:26

@ libaiyi
Posting: # 19010
Views: 1,122
 

 ISCVs of T1-R and T2-R: Leave-One-Out (IBD)

Hi libaiyi,

» When I try to calculate the intra-CV of three-treatment, three-period, three-sequence study in SAS, there is only one residual in the output.

Correct – if you use the conventional model, you get only one (pooled) variance.

» So, how could I find out the intra-CV between T1-R and T2-R respectively? Could I put only T1 and R or T2 and R in the model to get intra-CV respectively to compare which treatment is better?

See this post. You are on the right track. :-)
Perform two analyses, where in the first you exclude T2 and in the second T1.

Cheers,
Helmut Schütz
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