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Re: st: confidence interval for proportion

From   Roger Newson <>
Subject   Re: st: confidence interval for proportion
Date   Tue, 02 Dec 2003 13:00:55 +0000

At 16:39 01/12/03 -0800, B. Pizacani wrote:
Is there a way to do a crosstab of two categorical
variables, say, using -tabulate- and get confidence
intervals for the proportions? I know -svytab- does
this for weighted data, but it looks like I have to do
it in two steps for unweighted data from a simple
random sample. Thanks, B. Pizacani
One possible solution might be to use official Stata's -binreg- (or -glm- with -link(iden) family(bernoulli)-), together with the -parmby- program in the -parmest- package, downloadable from SSC. -parmby- creates an output data set with 1 observation per model parameter and data on confidence intervals and P-values. For more information on how to use -parmby- together with other packages to produce tables of confidence intervals, you might like to see my Stata Journal article (Newson, 2003), which you can download as a pre-publication draft from my website (see my signature below), using either a browser or the Stata -net- command.

I hope this helps.



Newson R. Confidence intervals and p-values for delivery to the end user. The Stata Journal 2003; 3(3): 245-269.

Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
United Kingdom

Tel: 020 7848 6648 International +44 20 7848 6648
Fax: 020 7848 6620 International +44 20 7848 6620
or 020 7848 6605 International +44 20 7848 6605

Opinions expressed are those of the author, not the institution.

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