BookmarkSubscribeRSS Feed
☑ This topic is solved. Need further help from the community? Please sign in and ask a new question.
Chris_LK_87
Quartz | Level 8

Hello, 

 

I have a dataset with hospitaladmissions for patients with the dates for enrollment and discharge across medical units. Patients can be moved around different units resulting in new lines in my dataset.  A patient can have multiple admissions.  When the patient finally is discharged from the hospital the variable episode has 'Yes' (the startdate for the first entry and enddate admission). I would like to give each episode a Seq_ID as shown in data want: 

 

 

data have;

;

input id$ inperiod:yymmdd10. outperiod:yymmdd10. episode$;

format inperiod yymmddd10. outperiod yymmddd10.;

datalines;

1 2021-05-09 2021-05-11 No

1 2021-05-11 2021-05-15 No

1 2021-05-15 2021-05-17 No

1 2021-05-09 2021-05-17 Yes

1 2022-01-11 2022-01-20 No

1 2022-01-20 2022-01-22 No

1 2022-01-11 2022-01-22 Yes

2 2020-04-09 2020-04-11 No

2 2020-04-11 2020-04-17 No

2 2020-04-09 2020-04-17 Yes

2 2022-07-20 2022-07-20 No

2 2022-07-20 2022-07-22 No

2 2022-07-20 2022-07-22 Yes

3 2022-03-01 2022-03-03 No

3 2022-03-03 2022-03-31 No

3 2022-03-01 2022-03-31 Yes

4 2022-05-25 2022-05-28 No

4 2022-05-28 2022-06-02 No

4 2022-05-25 2022-06-02 Yes

;

run;

 

data want;

input id$ inperiod:yymmdd10. outperiod:yymmdd10. episode$ seq_id

;

1 2021-05-09 2021-05-11 No 1

1 2021-05-11 2021-05-15 No 1

1 2021-05-15 2021-05-17 No 1

1 2021-05-09 2021-05-17 Yes 1

1 2022-01-11 2022-01-20 No 2

1 2022-01-20 2022-01-22 No 2

1 2022-01-11 2022-01-22 Yes 2

2 2020-04-09 2020-04-11 No 3

2 2020-04-11 2020-04-17 No 3

2 2020-04-09 2020-04-17 Yes 3

2 2022-07-20 2022-07-20 No 4

2 2022-07-20 2022-07-22 No 4

2 2022-07-20 2022-07-22 Yes 4

3 2022-03-01 2022-03-03 No 5

3 2022-03-03 2022-03-31 No 5

3 2022-03-01 2022-03-31 Yes 5

4 2022-05-25 2022-05-28 No 6

4 2022-05-28 2022-06-02 No 6

4 2022-05-25 2022-06-02 Yes 6

;

run;

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
PeterClemmensen
Tourmaline | Level 20

Try this

 

data want;
   set have;
   by ID episode notsorted;
   if first.episode and episode = 'No' then seq_id + 1;
run;

 

Result:

 

id inperiod   outperiod  episode seq_id
1  2021-05-09 2021-05-11 No      1
1  2021-05-11 2021-05-15 No      1
1  2021-05-15 2021-05-17 No      1
1  2021-05-09 2021-05-17 Yes     1
1  2022-01-11 2022-01-20 No      2
1  2022-01-20 2022-01-22 No      2
1  2022-01-11 2022-01-22 Yes     2
2  2020-04-09 2020-04-11 No      3
2  2020-04-11 2020-04-17 No      3
2  2020-04-09 2020-04-17 Yes     3
2  2022-07-20 2022-07-20 No      4
2  2022-07-20 2022-07-22 No      4
2  2022-07-20 2022-07-22 Yes     4
3  2022-03-01 2022-03-03 No      5
3  2022-03-03 2022-03-31 No      5
3  2022-03-01 2022-03-31 Yes     5
4  2022-05-25 2022-05-28 No      6
4  2022-05-28 2022-06-02 No      6
4  2022-05-25 2022-06-02 Yes     6

View solution in original post

1 REPLY 1
PeterClemmensen
Tourmaline | Level 20

Try this

 

data want;
   set have;
   by ID episode notsorted;
   if first.episode and episode = 'No' then seq_id + 1;
run;

 

Result:

 

id inperiod   outperiod  episode seq_id
1  2021-05-09 2021-05-11 No      1
1  2021-05-11 2021-05-15 No      1
1  2021-05-15 2021-05-17 No      1
1  2021-05-09 2021-05-17 Yes     1
1  2022-01-11 2022-01-20 No      2
1  2022-01-20 2022-01-22 No      2
1  2022-01-11 2022-01-22 Yes     2
2  2020-04-09 2020-04-11 No      3
2  2020-04-11 2020-04-17 No      3
2  2020-04-09 2020-04-17 Yes     3
2  2022-07-20 2022-07-20 No      4
2  2022-07-20 2022-07-22 No      4
2  2022-07-20 2022-07-22 Yes     4
3  2022-03-01 2022-03-03 No      5
3  2022-03-03 2022-03-31 No      5
3  2022-03-01 2022-03-31 Yes     5
4  2022-05-25 2022-05-28 No      6
4  2022-05-28 2022-06-02 No      6
4  2022-05-25 2022-06-02 Yes     6

Ready to join fellow brilliant minds for the SAS Hackathon?

Build your skills. Make connections. Enjoy creative freedom. Maybe change the world. Registration is now open through August 30th. Visit the SAS Hackathon homepage.

Register today!
How to Concatenate Values

Learn how use the CAT functions in SAS to join values from multiple variables into a single value.

Find more tutorials on the SAS Users YouTube channel.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 1 reply
  • 196 views
  • 1 like
  • 2 in conversation