topic Re: Flagging observations with specific values in an array of variables in SAS Programming

Flagging observations with specific values in an array of variables

Melk — Tue, 21 Nov 2017 00:56:22 GMT

As part of an if-then statement, I need to flag observations with certain codes in any of 25 variables dx1-dx25. What is the best way to do this?

y=0

if not missing(x) and...

...then y=1

end;

run;

Reeza — Tue, 21 Nov 2017 01:12:12 GMT

Double arrays. One with the list of values you’re looking for and a second with the dx.

Then loop through the smaller array and use WHICHC to search for the values. Use a LEAVE/BREAK to exit the loop once the flag is set.

Another approach would be to make it a long data set than it’s a very easy WHERE filter on the query.

Melk — Tue, 21 Nov 2017 01:24:24 GMT

Can I use double arrays if this is one part of multiple ands in an if-then statement?

i.e.

y=0;

if not missing(x)

and age>=18

and died = 0

and <array statement here??>

then do;

y=1;

end;

run;

Reeza — Tue, 21 Nov 2017 02:26:24 GMT

You can nest or add diff criteria just have to make sure the order is correct.