topic Re: use range as a variable in SAS Programming

use range as a variable

mingy — Mon, 16 Oct 2017 06:57:07 GMT

Hi, this might sound stupid, but i have been looking for the answer for last few hours, but I still can't figure this out.

The following code shows how I define my 'agegroup' variable:

if i in (1, 5) then agegroup = '<30';
	else if i in (2, 6) then agegroup = '31-45';
	else if i in (3, 7) then agegroup = '46-60';
		else agegroup = '60+';

But my sas output eliminates the number after the dash:

I thought this might be a problem about variable type, but I am not sure anymore. I also tried to replace the single quote with double quote, but it isn't working.

Re: use range as a variable

ChrisBrooks — Mon, 16 Oct 2017 07:42:00 GMT

If you don't specify a length for a character variable it takes as its length the length of the first value assigned to it. In your case there must be a value of either 1 or 5 as the first value in the data so agegroup has a length of 3 ('<30').

You can correct this by adding

length agegroup  $5;

before your set statement

Re: use range as a variable

gamotte — Mon, 16 Oct 2017 07:51:28 GMT

@ChrisBrooks gave you the explanation to your problem.

Instead of creating a new variable, you can use a format :

proc format;
	value agegroup
		1,5='<30'
		2,6='31-45'
		3,7='46-60'
		other='60+'
;
run;

proc print data=have;
	format i agegroup.;
run;

Re: use range as a variable

Patrick — Mon, 16 Oct 2017 08:08:32 GMT

@ChrisBrooks

"In your case there must be a value of either 1 or 5 as the first value in the data so agegroup has a length of 3 "

Variables get defined during the compilation phase and before data step iteration so what's in the data doesn't matter. The full reason for a length of 3 is, that this is the length of the first value assignment in the code: then agegroup = '<30'