Retaining specific period of time

[lillymaginta]

data have;
input id start_Dt dx_dt end_dt qt;
format start_Dt dx_dt end_dt mmddyy10.;
cards;
1  1/1/2005 1/2/2005  2/2/2005  30
2  3/3/2005 3/4/2005  9/10/2005  5
2  1/4/2006 4/4/2006 5/8/2006   10
2  5/1/2007 5/5/2007 5/7/2007   15
;
run;

I have the following data. I need to retain any observation were the time between dx_Dt and end_dt is within 7 days of start_dt and keep the qt variable in the output dataset

Output data

1  1/2/2005  1/9/2005  30

2  3/4/2005  3/10/2005 5

[PaigeMiller]

Why is this row not included in the output?

2  5/1/2007 5/5/2007 5/7/2007   15

[lillymaginta]

Sorry Paige, I meant and so on. I just wanted to give an example of the output for the first two. 

[PaigeMiller]

Well, if I am understanding the request properly, then this should work (note: there is no data set named WANT produced, all of this is done when creating data set HAVE)

data have;
input id start_Dt dx_dt end_dt qt;
if dx_dt-start_dt<=7 or end_dt-start_dt<=7 then output;
informat start_Dt dx_dt end_dt mmddyy10.;
format start_Dt dx_dt end_dt mmddyy10.;
cards;
1  1/1/2005 1/2/2005  2/2/2005  30
2  3/3/2005 3/4/2005  9/10/2005  5
2  1/4/2006 4/4/2006 5/8/2006   10
2  5/1/2007 5/5/2007 5/7/2007   15
;
run;