Statistical Methods and Software for the Analysis of Occupational Exposure Data With Non-Detectable Values
Edward L. Frome and Paul F. Wambach
Report "Statistical Methods and Software for the
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
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
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].
The "informal" R functions in Step 2 below
have been replaced with the R packages "Statistical Analysis of
Non-detect Data"(sand). The sand package is available at the statoed
website CLICK HERE Please visit this new website
for instructions on how to obtain and install R and the sand package
and to obtain the data sets in Stps 3-5 below..
The following instructions explain how to obtain the Windows
(95 or later) version of R and how to download the R functions and
data described in ORNL/TM-2005/52.
- If you have R installed and have an R-icon on your desktop go to the next step.
If you do not have R installed click here for instructions.
- To download the R functions from oedmain.R ,
oedutil.R and the example data sets:
CLICK HERE. See online help files and documentation
for the sand package.
- To Run R and Read in Functions and Data Sets in ORNL/TM-2005/52 CLICK HERE. These data sets are now available in the sand package.
- To read and analyze data from Example 1 Smelter Elevated Surface Data
CLICK HERE. See sand package help file
- For an example of how to read and analyze multiple data
sets from an Excel Spread Sheet CLICK HERE
See sand package help file for R function readss() in sand package.
This is Revision 3 of AOED Web Site (29Jun05).
Changes or revisions to
material at this web site are indicated Here.
Please see Notes 1 and 2 if you down loaded the R functions BEFORE 29
June 2005 from the FINAL DRAFT version of this web site at
Developed For U. S. DOE,
Office of Health (EH-5)
Last Modified 2 May 2007 by FromeEL@ornl.gov (touches: 202150 )