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Re: st: binominal, excact?


From   "Svend Juul" <SJ@SOCI.AU.DK>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: binominal, excact?
Date   Tue, 19 Feb 2008 13:38:26 +0100



Maren wrote:

When a study has tested 500 cases and 500 controls, and has not found
any carrier of a mutation. 
How do I based on these numbers calculated a maximum frequency of the
mutation in the population studied? With 95% Confidence interval? Is it
possible in STATA?

------------------------------------------------------------------------
--

One of the smart things in Stata is the immediate commands:

. cii 1000 0 , binomial

                                                         -- Binomial
Exact --
    Variable |        Obs        Mean    Std. Err.       [95% Conf.
Interval]
-------------+----------------------------------------------------------
-----
             |       1000           0           0               0
.0036821*
(*) one-sided, 97.5% confidence interval

Hope this helps
Svend

__________________________________________

Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000  Aarhus C, Denmark
Phone:  +45 8942 6090
Home:   +45 8693 7796
Email:  sj@soci.au.dk
__________________________________________ 

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