topic Re: Geometric LS mean. in SAS Procedures

Geometric LS mean.

rakeshvvv — Tue, 13 Nov 2018 17:17:32 GMT

Hi All,

Can someone help me with the code or procedure for calculation of Geometric LS mean.

Best regards

Rakesh

Re: Geometric LS mean.

mkeintz — Wed, 14 Nov 2018 05:22:36 GMT

I know what a geometric mean is, but I'm not sure about "geometric LS mean.". The term LS (for "least squares", correct?) suggests a predicted vs observed comparison, which makes me think there has to be a model.

Can you provide more detail on what you are trying to do, and how geometric LS mean would be understood?

Re: Geometric LS mean.

PeterClemmensen — Wed, 14 Nov 2018 21:11:02 GMT

I second @mkeintzs respond, I am uncertain about Geometric LS Mean?

Re: Geometric LS mean.

rakeshvvv — Fri, 16 Nov 2018 16:58:13 GMT

Thank you for your response. I am supposes to create a summary table to compare one treatment group against the other treatment group. I have to calculate geometric least square means using the PROC MIXED...I got the required components and I am able to calculate them using Proc mixed.

Best regards

Re: Geometric LS mean.

mkeintz — Sat, 17 Nov 2018 01:51:49 GMT

Looking at the PROC MIXED documentation, I see that it offers a LSMEANS statement, which I understand is meant to accommodate unbalanced designs in the class variables. So how is the geometric attribute established?

I'm quite curious. Can you show the proc mixed code you used to satisfy your assignment?