Hi ,
How to get same id presented same topic_id within within (less than) 45 days.
Can anyone help me on this?
ID | EVENT_START_DATE | TOPIC_ID |
4 | 18Sep2019 14:30:00 | 427EP1905697-01 |
4 | 18Dec2019 15:15:00 | 427EP1905697-01 |
4 | 21Feb2020 18:30:00 | 427EP1905697-01 |
4 | 18Sep2019 14:30:00 | 427ES18PR07337-01 |
4 | 18Dec2019 15:15:00 | 427ES18PR07337-01 |
4 | 21Feb2020 18:30:00 | 427ES18PR07337-01 |
4 | 18Sep2019 14:30:00 | IMSES18PR03522-01 |
4 | 18Dec2019 15:15:00 | IMSES18PR03522-01 |
4 | 21Feb2020 18:30:00 | IMSES18PR03522-01 |
6 | 12Sep2019 17:30:00 | 427EP1905697-01 |
6 | 18Sep2019 14:30:00 | 427EP1905697-01 |
6 | 18Dec2019 15:15:00 | 427EP1905697-01 |
6 | 12Sep2019 17:30:00 | 427ES18PR07337-01 |
6 | 18Sep2019 14:30:00 | 427ES18PR07337-01 |
6 | 18Dec2019 15:15:00 | 427ES18PR07337-01 |
6 | 12Sep2019 17:30:00 | IMSES18PR03522-01 |
6 | 18Sep2019 14:30:00 | IMSES18PR03522-01 |
6 | 18Dec2019 15:15:00 | IMSES18PR03522-01 |
Assuming your EVENT_START_DATE is truly numeric date/time values in SAS, and assuming your data is properly sorted by ID and TOPIC_ID, you can use the DIF Function.
data want;
set have;
by id topic_id;
delta=dif(event_start_date);
if not first.topic_id and delta<45*86400 then flag='Less than 45 days';
drop delta;
run;
Apply the same basic technique I showed you here.
Assuming your EVENT_START_DATE is truly numeric date/time values in SAS, and assuming your data is properly sorted by ID and TOPIC_ID, you can use the DIF Function.
data want;
set have;
by id topic_id;
delta=dif(event_start_date);
if not first.topic_id and delta<45*86400 then flag='Less than 45 days';
drop delta;
run;
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