topic Re: Proc compare with no unique id in SAS Procedures

Proc compare with no unique id

Mikeyjh — Fri, 08 Mar 2013 09:34:30 GMT

Hi all,

I have a general question abour proc compare.

Is the output from proc compare correct when there is no row level unique id associated with the data but I do use a non-unique column as the ID? For example, if I have an Adverse Event dataset where there is no unique id defined but I use subject number as the ID - is the result of using subject number as the ID dependable? I can also manufacture an ID based on subject number,AE text and start date but this is not guarenteed to be unique 100% of the time.

Is there a way to create an ID across both base/compare datasets to resolve this problem?

Re: Proc compare with no unique id

data_null__ — Fri, 08 Mar 2013 11:41:42 GMT

If you are doing QC of ADaM data for example use NO ID variable. You should be able to create exact duplicate of ADAE and compare row by row.

Re: Proc compare with no unique id

Mikeyjh — Fri, 08 Mar 2013 12:08:00 GMT

Is "NO ID" an option or do you mean dont use an ID at all ?

If no ID is defined how does the compare work?

Re: Proc compare with no unique id

data_null__ — Fri, 08 Mar 2013 12:22:47 GMT

Don't use ID statement. PROC COMPARE will compare record by record as if you said ID _N_; sort of.

If you are doing what I think you are, QCing ADaM data, I would use record level compare. No ID statement.