Thanks to Kit Baum, the very latest version of the -smileplot- package is
now available for download on SSC. Type -net desc smileplot- to find out more.
The -smileplot- package takes, as input, a data set with 1 observation per
estimated parameter and data including the corresponding P-values, carries
out a multiple test procedure on the multiple P-values, and plots the
P-values (on a reverse log scale) on the Y-axis against the corresponding
parameter estimates (or another variable) on the X-axis. The new version
has an improved help file (incorporating suggestions kindly provided by
Nick Cox) and also the option of suppressing the reference line on the
X-axis corresponding to the value of a parameter under the null hypothesis.
The second improvement is useful for plotting P-values against a variable
other than the corresponding parameter estimates. For instance, in a genome
scan, the data points might correspond to genes, the P-values might be from
tests of associations of those genes with a disease, and the X-axis
variable might be the positions of those genes on a chromosome.
More information on the -smileplot- package should appear in the near
future in a Stata Journal article, which the editors kindly accepted for
publication yesterday. (Thanks in advance to them for their good work.)
Best wishes
Roger
--
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: [email protected]
Opinions expressed are those of the author, not the institution.
