topic Re: remove duplicate ID that contains missing value in SAS Programming

remove duplicate ID that contains missing value

Elaine_Y — Fri, 05 Jun 2020 19:35:21 GMT

Hi,

I am joining two datasets by proc sql.

Hi, I hope to remove duplicate ids that contains missing values. The dataset look like below. Thank you very much!

id age gender outcome_1 outcome_2

1 67 2 . .

1 67 2 0 0

2 55 1 . .

2 55 1 1 1

3 40 2 . .

3 40 2 1 1

Re: remove duplicate ID that contains missing value

Reeza — Fri, 05 Jun 2020 19:44:19 GMT

What do you expect as output?

Re: remove duplicate ID that contains missing value

smantha — Fri, 05 Jun 2020 19:45:16 GMT

Hi do you know if you will have multiple ids with missing values or is it always two with one of them missing. If it is the latter you can sort the dataset by id and descending outcome_1.

proc sort data =inp_data;
by id descending outcome_1;
run;

data inp_data;
set inp_data;
by id;
if first.id;
run;

Re: remove duplicate ID that contains missing value

novinosrin — Fri, 05 Jun 2020 19:45:51 GMT


data have;
input id  age  gender outcome_1 outcome_2;
cards;
1  67       2          .                   .

1  67       2          0                  0

2  55       1          .                   .

2  55       1          1                  1

3  40       2           .                  .

3  40       2           1                  1
;

data want;
 update have(obs=0) have;
 by id age gender;
run;

id	age	gender	outcome_1	outcome_2
1	67	2	0	0
2	55	1	1	1
3	40	2	1	1