topic Re: Find unique values for a diagnosis column in SAS Programming

Find unique values for a diagnosis column

Saawan — Sat, 23 Sep 2017 21:03:35 GMT

Re: Clinical SAS

Kurt_Bremser — Sat, 16 Sep 2017 15:54:03 GMT

Please follow the instructions for posting a useful question.

Re: Clinical SAS

Saawan — Sat, 16 Sep 2017 16:22:51 GMT

Thank you.

Re: Find unique values for a diagnosis column

Reeza — Sat, 16 Sep 2017 19:05:43 GMT

Note that I've moved and renamed your thread to better reflect the topic and find an answer.

The easiest way is either PROC FREQ or PROC SQL.

Assuming the diagnosis code and diagnosis description align, ie one diagnosis only matches one diagnosis description and they are the same over time.

Here's one way:

proc freq data=have noprint;
table EmpID*DiagnosisCode*DiagnosisDescription / out=distinct_diagnosis_per_emp;
run;

Re: Find unique values for a diagnosis column

Saawan — Sun, 17 Sep 2017 01:34:35 GMT

Can I write sql query like this?

Proc sql;

select distinct EmpID, DiagnosisCode, DiagnosisDescription from Diag_tbl;

Saawan

Re: Find unique values for a diagnosis column

Patrick — Sun, 17 Sep 2017 01:46:39 GMT

@Saawan

May be without EmpID unless you want the distinct list per EmpID. Else: As long as you can be sure that a code has always the exactly same description things should work.

Re: Find unique values for a diagnosis column

Reeza — Sun, 17 Sep 2017 02:33:39 GMT

You can, but that will give you a list in the output, not a data set. The PROC FREQ generates a data set.

To modify the PROC SQL you could add a CREATE TABLE statement.

Re: Find unique values for a diagnosis column

Saawan — Sun, 17 Sep 2017 03:38:36 GMT

How does this work?

This will create a "Unique" table with data.

Proc sql;

create table Unique as

select distinct EmpID, DiagnosisCode, DiagnosisDescription from Diag_tbl;

Re: Find unique values for a diagnosis column

Saawan — Sun, 17 Sep 2017 03:41:24 GMT

Thank you Reeza. I appreciate your help.

Re: Find unique values for a diagnosis column

Saawan — Sun, 17 Sep 2017 03:42:43 GMT

yup!! Thank you for the reply.