Re: st: New package on SSC: -eclpci-

[Roger Harbord <roger.harbord@bristol.ac.uk>]

--On 27 June 2005 12:53 +0200 Nicola Orsini <nicola.orsini@imm.ki.se> wrote:

> Thanks to Marcello Pagano who mantains the Statalist and to Kit Baum for
> a new Stata package -eclpci- available from SSC.
>
> -eclpci- calculates exact and approximate confidence limits for a
> Poisson count (#obs). It provides a Standardized Mortality Ratio
> (SMR=#obs/#exp) and its confidence limits if the expected number of
> events (#exp) is specified.  It is an immediate command.
Hi Nicola,

Could you clarify how this differs from official Stata's -cii #exposure 
#events , poisson- ?


. eclpci 10 1000, format(%9.0g)

SMR:       .01  95% CI[ .0047954,  .0183904]

. cii 1000 10, poisson

                                           -- Poisson  Exact --
Variable |   Exposure   Mean    Std. Err.   [95% Conf. Interval]
---------+------------------------------------------------------
        |       1000    .01    .0031623    .0047954    .0183904



Thanks,
Roger.

--
Roger Harbord
Department of Social Medicine, University of Bristol
http://www.epi.bris.ac.uk


*
*   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/