I have the following sample dataset, here 99 is a missing entry.
DATA HAVE;
input var2001 var2002 var2003 var2004;
cards;
1 1 99 99
3 99 4 4
99 4 3 99
4 4 99 4
99 99 99 99
;
run;
I want to create a new variable 'var_cur' for latest non missing entry. If a variable only has missing entries then the new variables must have '99' as entry.
Desired output
Obs var_cur
1 1
2 4
3 3
4 4
5 99
Thank you for the help.
data want;
set have;
array a(4) var2001 var2002 var2003 var2004;
do i=1 to dim(a);
if a(i)^=99 then var_cur=a(i);
end;
/* for all missing vars*/
if var_cur=. then var_cur=99;
run;
data want;
set have;
array a(4) var2001 var2002 var2003 var2004;
do i=1 to dim(a);
if a(i)^=99 then var_cur=a(i);
end;
/* for all missing vars*/
if var_cur=. then var_cur=99;
run;
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