topic How to use proc freq to find results in multible variables in SAS Programming

How to use proc freq to find results in multible variables

miajoe — Tue, 14 Feb 2023 10:40:39 GMT

Hi, below is an example of the data I have (in reality about 20000 entries and many more variables).

Identifier	Var_1	Var_2	Var_3
1	ZN	ZN	DS
2	ZN	DS	FD
3	DS	DS
4	FD	FD	ZN

I used proq freq to find frequencies of 'ZN', 'DS' and 'FD' for Var_1, Var_2 and Var_3 seperately like so:

proc freq data=rehab order=freq;
tables Var_1;
run;

I want to find the freq. of 'ZN' and so on in all three variables, but not counting them multible times. As in "so many have 'ZN' at all and so on

I cant seem to grasp it - is it possible oh clever internet-people?

Re: How to use proc freq to find results in multible variables

Kurt_Bremser — Tue, 14 Feb 2023 10:50:38 GMT

Bad dataset structure leads to complicated code. See Maxim 19.

Transpose first, get rid of the duplicates, FREQ:

proc transpose data=have out=long (keep=identifier col1);
by identifier;
var var_:;
run;

proc sort data=long nodupkey;
by identifier col1;
run;

proc freq data=long;
tables col1;
run;

Re: How to use proc freq to find results in multible variables

miajoe — Tue, 14 Feb 2023 11:06:54 GMT

Thank you

The dataset has many more facets, and it is also relevant how many have 1, 2 or three and which have dublicates.

Transposing a copy of the dataset for anwering specific questions does however seem to be the answer, and your code did work for that so thank you very much!!

Re: How to use proc freq to find results in multible variables

maguiremq — Tue, 14 Feb 2023 13:46:02 GMT

Hi @miajoe, glad to see that it worked. Did @Kurt_Bremser solve your problem? If so, please mark this as solved and that @Kurt_Bremser provided the solution.

This will help others in the future that may run into the same issues.

Thank you!