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How do I use a defined subset of items in my covariate list.The title is pretty much it. I have a list of 5 covariates, and 703 items on the list. Most are expensive so i want to choose only from say items 23-39 and items 267, but i want to bring the list along in the code in-case we have to bite the bullet and augment to more expensive items later on.

Is this doable?

ThanksDOEWindowsRe: How do I use a defined subset of items in my covariate list.

I'm not sure I understand  your question.  What are you trying to do with the "covariates"?

 

Here are my initial thoughts:

 

Using several different regression type platforms, you could look for relationships between many variables.  Of course the concern with covariates is:

1. Measurement errors in the covariate,

2. Lag effect,

3. Frequency of changes in the covariate,

4. Multivariate concerns

5. Others...

 

I would start with reasonable hypotheses to narrow the field (critical thinking), then there are lots of options....depending on if you have a model in mind vs. no idea. 

 

I'd start with simple correlations: Multivariate Methods>Multivariate (put them all in).  The scatter plots are most important.