Dear Ziad,
please take a look at what follows below (assuming: 10 patients=id; one
visit=first_visit):
------------------------------begin example---------------------------
set obs 10
obs was 0, now 10
. g id=_n
. g first_visit=1 in 1/5
(5 missing values generated)
. replace first_visit=0 in 6/10
(5 real changes made)
. count if first_visit==0 & id!=.
5
. list if first_visit==0 & id!=.
+---------------+
| id first_~t |
|---------------|
6. | 6 0 |
7. | 7 0 |
8. | 8 0 |
9. | 9 0 |
10. | 10 0 |
+---------------+
--------------------------------------end
example---------------------------HTH and Kind Regards,
Carlo
-----Messaggio originale-----
Da: [email protected]
[mailto:[email protected]] Per conto di Ziad El-Khatib
Inviato: sabato 8 marzo 2008 6.21
A: [email protected]
Oggetto: st: Patients missing visits
Dear STATA lister,
I am following cohort of patients over different time points (variable
= visit). I am looking at couple of indicators, for example vl and
weight at every visit.
I want to find
1) the number of patients who didn't come to every visit?
2) and to find which patients didn't come?
Any tips how to do it?
Thank you in advance and best regards
ziad
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* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/
