Data Have illustrate a case where a patients receive a specific service in specific periods before death - which is at day 0. I would like to transpose this file and make it like Data Want where there is one row per day per ID and a dummy variable taking the value of 1 if the service is received, 0 if not. In total, the period covered in this example is 14 days (incl. day 0).
Data Have:
Obs | ID | Startday | Endday |
1 | 1 | -2 | 0 |
2 | 1 | -8 | -6 |
3 | 1 | -11 | -10 |
4 | 2 | -5 | -3 |
5 | 2 | -8 | -7 |
Data Want
Obs | ID | Day | Dummy |
1 | 1 | 0 | 1 |
2 | 1 | -1 | 1 |
3 | 1 | -2 | 1 |
4 | 1 | -3 | 0 |
5 | 1 | -4 | 0 |
6 | 1 | -5 | 0 |
7 | 1 | -6 | 1 |
8 | 1 | -7 | 1 |
9 | 1 | -8 | 1 |
10 | 1 | -9 | 0 |
11 | 1 | -10 | 1 |
12 | 1 | -11 | 1 |
13 | 1 | -12 | 0 |
14 | 1 | -13 | 0 |
15 | 2 | 0 | 0 |
16 | 2 | -1 | 0 |
17 | 2 | -2 | 0 |
18 | 2 | -3 | 1 |
19 | 2 | -4 | 1 |
20 | 2 | -5 | 1 |
21 | 2 | -6 | 1 |
22 | 2 | -7 | 0 |
23 | 2 | -8 | 1 |
24 | 2 | -9 | 0 |
25 | 2 | -10 | 0 |
26 | 2 | -11 | 0 |
27 | 2 | -12 | 0 |
28 | 2 | -13 | 0 |
data have;
infile cards expandtabs;
input obs id start end;
cards;
1 1 -2 0
2 1 -8 -6
3 1 -11 -10
4 2 -5 -3
5 2 -8 -7
;;;;
run;
proc print;
run;
data expand1;
do until(last.id);
set have;
by id;
array _rng[-13:0];
do i = start to end;
_rng[i]=1;
end;
end;
do i = hbound(_rng) to lbound(_rng) by -1;
day = i;
dummy = coalesce(_rng[i],0);
output;
end;
keep id day dummy;
run;
proc print;
run;
data have;
infile cards expandtabs;
input obs id start end;
cards;
1 1 -2 0
2 1 -8 -6
3 1 -11 -10
4 2 -5 -3
5 2 -8 -7
;;;;
run;
proc print;
run;
data expand1;
do until(last.id);
set have;
by id;
array _rng[-13:0];
do i = start to end;
_rng[i]=1;
end;
end;
do i = hbound(_rng) to lbound(_rng) by -1;
day = i;
dummy = coalesce(_rng[i],0);
output;
end;
keep id day dummy;
run;
proc print;
run;
Worked perfect!
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