Michael:
Is the variable dset in dset1.dta a string? (open dset1.dta and type -desc dset- to find out)
HTH,
Maarten
--- Michael McCulloch <[email protected]> wrote:
> I have two datasets, (dset1.dta and dset2.dta).
> With dset1.dta, I append with the command: append using dset2.dta.
>
> dset1.dta has:
> id dset agev male meduse afev1
> 2 1 10 1 1 1.700833
> 6 1 11 0 0 2.084792
> 15 1 11 1 0 1.499583
> 18 1 7 1 0 1.183437
> 20 1 10 1 0 1.400417
>
> dset2.dta has:
> id dset agev male meduse afev1
> 2 0 10 1 0 -9
> 6 0 11 0 1 -9
> 15 0 11 1 1 -9
> 18 0 7 1 1 -9
> 20 0 10 1 1 -9
>
> After I append, why are values from the first dataset dset1.dta for the
> variable dset==1 are dropped?
> id dset wheeze cough meduse afev1 male agev height
> anysx
> 2 0 0 0 0 -9 1 10 137.922
> 0
> 2 . 0 0 1 1.700833 1 10
> 137.922 0
> 6 . 0 1 0 2.084792 0 11
> 150.876 1
> 6 0 0 1 1 -9 0 11 150.876
> 1
> 15 . 0 1 0 1.499583 1 11
> 141.986 1
> 15 0 0 1 1 -9 1 11 141.986
> 1
> 18 . 0 0 0 1.183437 1 7
> 120.396 0
> 18 0 0 0 1 -9 1 7 120.396
> 0
> 20 . 0 0 0 1.400417 1 10
> 150.114 0
> 20 0 0 0 1 -9 1 10 150.114 0
>
>
>
>
> Best wishes,
> Michael
>
>
> ____________________________________
>
> Michael McCulloch
> Pine Street Clinic
> 124 Pine Street, San Anselmo, CA 94960-2674
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> *
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>
-----------------------------------------
between 1/2/2006 and 31/3/2006 I will be
visiting the UCLA, during this time the
best way to reach me is by email
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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