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Re: st: missing event times in st data
Trond Petersen has written some papers on time aggregation bias, which is what
this sounds like, somewhere in the sociological methods journals. That might
be a place to start.
Quoting Stas Kolenikov <firstname.lastname@example.org>:
> Dear Statalisters,
> I have an annual study where people report their status (employed /
> unemployed). It is not always asked when the transition from one state
> to another had happened. What can I do to smartly (hm...) assign
> the initiating and terminating times? A simple thing to do is to
> take the middle of the interval as the time of change. A better thing
> might be to integrate out the missingness in the style of EM algorithm.
> Can anybody provide a reference to what can be / should be / sometimes
> is done?
> --- Stas Kolenikov
> -- Ph.D. student in Statistics at UNC-Chapel Hill
> - http://www.komkon.org/~tacik/ -- Stas.Kolenikov@unc.edu
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