Re: st: stset with multiple spells

["Chris Chung" <cchungc403@rogers.com>]

Cleves' STB-49 should be a good place to start. You may also want to look 
at:
Ezell, M.E., Land, K.C., & Cohen, L.E. 2003. Modeling multiple failure time 
data: A Survey of variance-corrected proportional hazards models with 
empirical applications to arrest data. Sociological Methodology, 33: 
111-167.

HTH,
Chris


----- Original Message ----- 
From: "Sara Mottram" <s.mottram@cphc.keele.ac.uk>
To: <statalist@hsphsun2.harvard.edu>
Sent: Monday, April 24, 2006 2:57 AM
Subject: Re: st: stset with multiple spells



> Hi Juan,
>
> I think that I am trying to do a similar analysis where I look at the 
> number of consultations with a doctor for a certain condition, over a 
> three year period. You do not say which version of Stata you are using but 
> I think this type of analysis is possible in Version 9 by considering the 
> data as multiple failures. However, I haven't got any further than this 
> myself. I believe that exactly which command and options you need to use 
> depends on the precise question. You might also want to look at the paper 
> by Jos Twisk. "Twisk J, Smidt N, de Vente W. Applied analysis of recurrent 
> events: a practical overview. J. Epidemiol. Community Health 2005; 
> 59;706-10". which can be found at 
> http://jech.bmjjournals.com/cgi/reprint/59/8/706.
> Hope this helps and perhaps someone else could clarify the situation 
> further.
>
> Sara
>
>
> Juan Manuel Jauregui wrote:
>
> > My fellow Stata lovers,
> >
> > I'm trying to stset my dataset, and I'm having trouble. I already read 
> > the [st]
> > manual, the great book by Cleves et al (2004) and also his excelent 
> > review of
> > this issue at the FAQ (reproducing the STB-49) and even a search of the
> > Statalist history and other websites wasn't fruitful.
> >
> > Here is my problem:
> >
> > I have an unbalanced panel of almost 200 individuals (countries in this 
> > case)
> > with 100 records each (25 years of quarterly data) and I want to study 
> > the
> > duration of some periods of financial distress. I have an event that 
> > marks the
> > begining of each crisis, and another event that marks its end. This 
> > crises
> > periods appear more than once for each country and they are separated 
> > from each
> > other by periods of tranquility, that is, analysis time should begin from 
> > 0 when
> > a new crisis begins.
> >
> > The closest thing I think I can do is to take each episode as an 
> > individual and
> > take countries as groups and use a shared frialty model, but that 
> > wouldn't be
> > exactly what I want to do. I'd prefer to take it as repeated episodes of 
> > the
> > same individual.
> >
> > Any help will be greatly appreciated.
> >
> > Thanks a lot!
> >
> > Juan Manuel Jauregui
> > Doctoral Student
> > Global Economics and Management
> > UCLA Anderson School of Management
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> --
> Sara Mottram Research Assistant: Biostatistics
> Primary Care Musculoskeletal Research Centre
> Primary Care Sciences
> Keele University
> Staffordshire, ST5 5BG
> Tel:  01782 584711
> Fax:  01782 583911
> *
> *   For searches and help try:
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*
*   For searches and help try:
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