How to find oud the non missing values of any particular variable at any particular position from existing table

[sufianbadar]

To find out the non missing values of any particular variable at any particular position with conditional statement like it should be greater than or less than

SUB VISIT SBP DBP WEIGH

10001	1	129	110	59
10001	2	140	106	57
10001	3			55
10001	4	164	100	54
10001	5		92	56
10002	1	156	103	82
10002	2			80
10002	3			81
10002	4	128	92	79
10002	5	134		81
10003	1	161	78	90
10003	2			88
10003	3		85	87
10003	4	139		89
10003	5	120	77	91
10004	1	134	105	87
10004	2			85
10004	3	160	98	86
10004	4	139	88	89
10004	5		77	90
10005	1	147	102	98
10005	2		95	96
10005	3		100	99
10005	4	150	97	100
10005	5	143	85	98
10006	1	139		94
10006	2	128		90
10006	3	135	85	93
10006	4			95
10006	5		79	91

1. Get only latest non-missing values from on or before 3 visit into 3 different data sets for DBP, SBP and Weight variables. I am not able to put questions in wright words.

2. Merge all three, SBP, DBP, WEIGHT

I appreciate if you guide me how to write the code. I am expecting this answer, which is marked in red color.

Thanks.

[Kurt_Bremser]

Your "want" data are inconsistent; with sub 10005 you want the first dbp, although there have been measurements at every visit, so by your rule the value from visit 3 should have been chosen.

[Ksharp]

Hard to understand you .  Subject 10003 's weight 87 should not mark as red ?

Suppose I know what you mean.

data have;
input SUB VISIT SBP DBP WEIGH ;
cards;
10001     1     129     110     59
10001     2     140     106     57
10001     3     . . 55
10001     4     164     100     54
10001     5     . 92     56
10002     1     156     103     82
10002     2     . . 80
10002     3     . . 81
10002     4     128     92     79
10002     5     134      . 81
;
run;
data want;
 set have;
 by sub;
 retain s d w found;
 if first.sub then do;found=0;n=0;end;
 if not missing(sbp) and not missing(dbp) and not found then do;s=sbp;d=dbp;end;
 if not missing(weigh) and not found then w=weigh;
 n+1;
 if n gt 2 then found=1;
 if last.sub;
 keep sub s d w ;
run;

Xia Keshan

[data_null__]

How is this question different from this

https://communities.sas.com/thread/74932