HTH,
Maarten
-----------------------------------------
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/
-----------------------------------------
Lian Jian wrote
> What troubles me is that when I did not know the existence of
> this "missing" option, I recoded the missing values from "."
> to 999999999 using "recode ts1 miss=999999999", thinking that
> it wouldn't matter. Theoretically, it shouldn't matter because
> ts1 is only used when y == 1. When y == 0, the value of ts1
> does not enter the likelihood function. I have made sure
> whenever y==1, ts1 has a valid value. And whenever y==0, ts1
> is missing. What troubles me is that when the missing values
> of ts1 are coded as 2 or 999999999, it gives me different
> estimation results.
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