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st: RE: New package -xcontract- on SSC


From   "Sugie Lee" <gte573q@prism.gatech.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: New package -xcontract- on SSC
Date   Mon, 4 Aug 2003 14:07:15 -0400

Hi! I am a STATA beginner.
I installed xcontract with "ssc desc xcontract" in stata 8.
Then, I typed "help xcontract" command.
There are a couple of examples using xcontract like following.

. xcontract foreign rep78, list(*)

My question is "where is the data file(including foreign and rep78
variables)
to run this command"?

Thanks.

Sugie in Georgia Tech


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Roger Newson
Sent: Monday, August 04, 2003 12:35 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: New package -xcontract- on SSC


Fellow Statalisters

Thanks to Kit Baum, there is now a new package -xcontract- downloadable
from SSC. In Stata, type -ssc desc xcontract- to find out more.

The -xcontract- package is described as below on my website. It is an
extended version of -contract-, and is improved in 3 ways. First, it
calculates percents. Second, it is byable (calculating percents within
by-groups if -by ... :- is specified). Third, it gives the user more choice
about the destination of the output data set, with the options of listing
it to the Stata log, saving it to a disk file, or writing it to the memory
(overwriting the original data set).

Just recently, there have been a few postings on Statalist, indicating that
quite a few users could use a package like -xcontract- for creating
publication-ready tables of frequencies and percents. The output data set
produced by -xcontract- can be converted to a form that can be cut and
pasted into a word processor such as Microsoft Word, or into a TeX, LaTeX
or HTML document, using the -listtex- package, downloadable from SSC (or in
a Stata 7 version from my website). This might be done after reprocessing
the output data set using various other packages, such as -tostring- and
-ingap- (also downloadable from SSC) and -reshape- (part of official
Stata). More about the use of these packages to create publication-ready
tables can be found in Newson (2003), due to appear in The Stata Journal,
but also downloadable from my website at
http://www.kcl-phs.org.uk/rogernewson/
either using a browser or using the Stata -net- command.

Best wishes

Roger

References

Newson R. Confidence intervals and p-values for delivery to the end user.
The Stata Journal 2003, in press.


----------------------------------------------------------------------------
--------------------------------------------
package xcontract from http://www.kcl-phs.org.uk/rogernewson/stata8
----------------------------------------------------------------------------
--------------------------------------------

TITLE
       xcontract: Make data set of frequencies and percents on disk or in
memory

DESCRIPTION/AUTHOR(S)
       xcontract is an extended version of contract. It creates a data set
with one
       observation per combination of values of a list of variables in the
existing
       data set and new variables containing the frequency and percent of
each
       combination, and, optionally, the cumulative frequency and percent
of each
       combination. By-variables can be used with xcontract, and the
percents
       will then be calculated within by-groups. The output data set may
either be
       listed to the Stata log, or saved to a disk file, or written to the
memory
       (overwriting any existing data set).

       Author: Roger Newson
       Distribution-Date: 04august2003
       Stata-Version: 8

INSTALLATION FILES                                  (click here to install)
       xcontract.ado
       xcontract.hlp
----------------------------------------------------------------------------
--------------------------------------------

--
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
Email: roger.newson@kcl.ac.uk
Website: http://www.kcl-phs.org.uk/rogernewson

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

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