Re: st: stset with multiple spells

[Sara Mottram <s.mottram@cphc.keele.ac.uk>]

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:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/