What commands are you using?
--- Luis Ortiz <[email protected]> wrote:
> Dear Statalisters,
>
> I'm analysing the occurrence of the following event: getting out of
> employment if you are over-educated. I'm doing so for a number of
> over-educated individuals, using panel data. The spells are the
> periods in
> over-education.
>
> I am especially interested by the type of contract. This is one of my
> main
> independent variables. Therefore, I have split the initial variable
> in the
> corresponding dummies, in order to include them in the analysis. Yet,
> I have
> found that each one of these dummies perfectly predict the occurrence
> of the
> event I'm studying. It might be because the spells are not very long
> and the
> job, no matter how over-qualified it is, goes associated with a given
> type
> of contract. In other words, the type of contract does not change
> during the
> spell.
>
> In such a case, dummy covariates on type of contract are not feasible
> for
> the analysis. They perfectly predict the occurrence of the event.
>
> Yet, this does not mean that over-educated workers are equally likely
> to get
> out of employment REGARDLESS of their type of contract. Moreover, I
> suspect
> that the type of contract may be associated to a different likelihood
> of
> getting out of the employment.
>
> How could I overcome the problem I have mentioned for running
> survival
> analysis? Is there any alternative way to estimate the relative
> likelihood
> of temporary / permanent over-educated workers quitting their jobs
> that you
> come up with?
>
> I do appreciate your attention
>
> Best regards
>
> Luis Ortiz
>
> *
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>
-----------------------------------------
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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*
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