Great, thank you a lot!
Best regards
ziad
On Sat, Mar 8, 2008 at 1:46 AM, Carlo Lazzaro <[email protected]> wrote:
> 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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