Statistical Analysis of Non-detect Data (SAND)
The R package Statistical Analysis
of Non-detect Data (sand) Version 1.4 (REVISED
9 November 2009) contains most of the functions described
in ORNL/TM-2005/52. The functions in the sand package
replace the "informal" R functions at the AOED
website described in ORNL/TM-2005/52. The most important
changes are the addition of on-line help files that
document each function and the functions readss (revised)
and icfit (new function for interval censored data---see
the examples in Step 3 below)
Statistical
Methods and Software for the Analysis of
Occupational Exposure Data With Non-Detectable Values
Edward L. Frome
and Paul F. Wambach
ORNL Technical Report "Statistical Methods
and Software for the
Analysis of Occupational Exposure Data With Non-Detectable
Values",
ORNL/TM-2005/52
is available here in
PDF format
Abridged Version (Abstract,Introduction,Applications
and Appendix) is available here
in HTML format
The
following instructions explain how to obtain the Windows
(95 or later) version of R, download and install the
sand package, and analyze data using these functions
in sand. The folder "...\My Documents"
will be used to illustrate how to download and install
the R package sand Version 1.4 . To
REPLACE Version 1.0 through 1.3 REPEAT Steps 2-f through
2-j. NOTE: Version 1.4 resolves compatibility issues with
R version 2.6.
Select the appropriate step from the left hand menu
1. Install R and place R-icon (shortcut) on your desktop.
NOTE: this step requires Administrator permission.
2. Download
and install R package sand.
If you are NOT using Window OS see Step 1-f.
3. Examples of how to use the most important functions
in sand.
4. Reference Manual [sand.pdf]
R is a language and
environment for statistical computing and graphics.
It compiles and runs on a wide variety of UNIX platforms
and similar systems (including FreeBSD and Linux),
Windows, and MacOS. R is available as Free Software
under the terms of the Free Software Foundation's
GNU General Public License in source code form and
as binaries.>
For additional information
visit the R Homepage and read What
is R? (see Menu on left) and the FAQs under Documentation.
For on line documentation go to the R Homepage and
Select
[Manuals] on left hand menu and then see Item
1 An Introduction to R and click on [browse HTML].
For additional information
on the use of this package in a Windows environment
CLICK HERE
To obtain information
on changes to the sand package send an e-mail message
to FromeEL@ornl.gov
with
Subject: R Package sand.
For further information on the SAND activities, please contact Paul Wambach
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