--- Ziad El-Khatib <[email protected]> wrote:
> in the same dataset each patient did come more than once, is it
> possible to count n of visits per patient using patientID number for
> example?
bys patientID: gen nvisits = _N
-- Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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