Flagging observations with specific values in an array of variables

[Melk]

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...

 <something translating to 123 or 234 in any of dx1-dx25>

...then y=1

end;

run;

[Reeza]

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]

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]

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