Thanks to Kit Baum, there is now a new version of the -smileplot- package
on SSC. In Stata, type -ssc desc smileplot- to find out more.
The -smileplot- package is as described below on my website. The new
version has all the same programs as the old version. However, the help
files now contain a reference to the Stata Journal paper "Multiple-test
procedures and smile plots" (by myself and the ALSPAC Study Team, published
earlier this week), together with hypertext to download a pre-publication
draft of the paper from my website.
Best wishes
Roger
TITLE
smileplot: Multiple test procedures and smile plots
DESCRIPTION/AUTHOR(S)
This package contains the programs multproc, smileplot and smileplot7.
multproc inputs a data set with 1 observation for each of a set of
multiple
significance tests and data on the P-values, and carries out a
multiple test
procedure chosen by the user to define a corrected overall critical
P-value
for accepting or rejecting the null hypotheses tested. These procedures
may be one-step, step-up or step-down, and may control the
familywise error
rate (eg the Bonferroni, Sidak, Holm, Holland-Copenhaver, Hochberg
and Rom
procedures) or the false discovery rate (eg the Simes, Benjamini-Liu,
Benjamini-Yekutieli and Benjamini-Krieger-Yekutieli procedures).
smileplot,
and its Stata 7 version smileplot7, work by calling multproc and then
creating a smile plot, with data points corresponding to multiple
estimated
parameters, the P-values (on a reverse log scale) on the Y-axis, and the
corresponding parameter estimates (or another variable) on the
X-axis. There
are Y-axis reference lines at the uncorrected and corrected overall
critical
P-values. The reference line at the corrected critical P-value,
known as the
parapet line, is interpreted informally as a boundary between data
mining and
data dredging. multproc, smileplot and smileplot7 are used on data
sets with
one observation per estimated parameter and data on estimates and their
P-values, which may be created using parmby, parmest, statsby or
postfile.
Author: Roger Newson
Distribution-Date: 27june2003
Stata-Version: 8
INSTALLATION FILES (click here to install)
multproc.ado
multproc.hlp
smileplot.ado
smileplot.hlp
smileplot7.ado
smileplot7.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.
