Hi,
Please find the below sample dataset. I want for each Test whenever Visit = 1 then Visit_order to be as
if Visit 1 then Visit_order = 1
if Visit 14 then Visit_order = 2
if Visit 28 then Visit_order = 3
and
if Visit 2 then Visit_order = 4
if Visit 14 then Visit_order = 5
if Visit 28 then Visit_order = 6.
Could any please help me in achieving this? I have attached expected output for reference.
data test;
input Test $1 Visit 8.;
datalines;
A 1
A 14
A 28
B 2
B 14
B 28
C 2
C 14
C 28
D 1
D 14
D 28
run;
Your logic is ambiguous. Why the same visit 14 28 get different visit_order?
data test; input Test $1 Visit 8.; datalines; A 1 A 14 A 28 B 2 B 14 B 28 C 2 C 14 C 28 D 1 D 14 D 28 ; run; data test; set test; retain _visit; if test ne lag(test) then _visit=visit; run; data want(drop=_visit); set test; select; when(_visit=1 and visit=1 ) visit_order=1; when(_visit=1 and visit=14) visit_order=2; when(_visit=1 and visit=28) visit_order=3; when(_visit=2 and visit=2) visit_order=4; when(_visit=2 and visit=14) visit_order=5; when(_visit=2 and visit=28) visit_order=6; otherwise; end; run;
Ksharp
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