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st: New version of -somersd- on SSC


From   "Roger Newson" <[email protected]>
To   "Statalist" <[email protected]>
Subject   st: New version of -somersd- on SSC
Date   Thu, 8 Dec 2005 12:59:55 -0000

Hello All

Thanks to Kit Baum, a new version of the -somersd- package is now available
for download from SSC. In Stata, use the -ssc- command to do this.

THe -somersd- package is defined as below on my website. The new version has
the same programs as the previous version, but the manual -somersd.pdf- has
been slightly revised, removing a few typos and introducing a few minor
changes. I plan to submit an article about the Stata 9 version of -somersd-
to The Stata Journal soon.

Best wishes

Roger


--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
Division of Asthma, Allergy and Lung Biology
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: [email protected]
Website: http://phs.kcl.ac.uk/rogernewson/

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


----------------------------------------------------------------------------
--------
package somersd from http://www.kcl-phs.org.uk/rogernewson/stata9
----------------------------------------------------------------------------
--------

TITLE
      somersd: Kendall's tau-a, Somers' D and median differences

DESCRIPTION/AUTHOR(S)
      The somersd package contains the programs somersd and cendif, which
      calculate confidence intervals for the parameters behind rank or
      "nonparametric" statistics. The program somersd calculates confidence
      intervals for Kendall's tau-a or Somers' D, and stores the estimates
and
      their covariance matrix as estimation results. It can be used on
      left-censored, right-censored, clustered and/or stratified data.
      The program cendif calculates confidence intervals for Hodges-Lehmann
      median differences (or other percentile differences) between two
groups.
      Kendall's tau-a is a difference between probabilities of concordance
and
      discordance, and measures rank order correlation. Somers' D is a
parameter
      equal to zero under the null hypothesis tested by the
Wilcoxon-Mann-Whitney
      or Breslow-Gehan ranksum test, and can be used to calculate confidence
      intervals for Harrell's c index, for areas under receiver operating
      characteristic (ROC) curves, for differences between Harrell's c
indices
      or ROC areas, or for Gini coefficients. The Hodges-Lehmann median
difference
      can be defined in terms of Somers' D, and is also zero under the null
      hypothesis tested by the ranksum test. Full documentation of the two
programs
      (including methods and formulas) can be found in the ancillary files
      somersd.pdf and cendif.pdf, which can be viewed using the Adobe
Acrobat
      Reader.

      Author: Roger Newson
      Distribution-date: 07 December 2005
      Stata-version: 9


INSTALLATION FILES                                  (click here to install)
      somersd.ado
      lsomersd.mlib
      somersd.hlp
      somers_p.ado
      cendif.ado
      cendif.hlp
      _blncdtree.mata
      blncdtree.mata
      tidot.mata
      tidottree.mata
      _u2jackpseud.mata
      _v2jackpseud.mata
      tidotforsomersd.mata
      estvar1forsomersd.mata

ANCILLARY FILES                                     (click here to get)
      somersd.pdf
      cendif.pdf
----------------------------------------------------------------------------
--------
(click here to return to the previous screen)

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