About the author of softRX freeware...

Robert L. (Bob) Obenchain, Ph.D.

Risk Benefit Statistics LLC

Biostatistics, Non-randomized Studies, Patient Differential Response,
Treatment Selection Bias and Confounding, Incremental Cost-Effectiveness

Professional Interests:

I continue doing active research and development on methods of adjustment for treatment-selection-bias in non-randomized studies. My recent focus has been on Nonparametric Unsupervised methods that I call: NU-Learning ...implemented via my LocalControlStrategy R-package.

I retired from Eli Lilly in August of 2007, where I was a Senior Research Advisor and a Statistics Group Leader for Health Outcomes Research in the US Medical division, Commercial Information Sciences.  Before my 17 years at Lilly, I was at Glaxo in the Research Triangle Park, NC, for almost 5 years.  Before that, I spent 17 years in the Applied Statistics and Quality Assurance Technology centers of AT&T Bell Labs and Bell Communications Research in New Jersey.

I received my PhD in Mathematical Statistics from the University of North Carolina, Chapel Hill, in 1969; my thesis advisors were N. L. Johnson and P. K. Sen. I served as an Associate Editor of the Journal of the American Statistical Association, Theory and Methods, from 1980 to 1985. And I was elected a fellow of the American Statistical Association in 1997.

I served as a Methods Partner with the Observational Medical Outcomes Partnership (OMOP) of the Foundation of the National Institutes of Health in 2009-2010. I also served as a Senior Research Fellow at the National Institute of Statistical Sciences (NISS) in Research Triangle Park, NC, 2010-2017. Meanwhile, I also served as an Adjunct Professor of Biostatistics, first at IU Medical School, Indianapolis, during 2005-2013 then at University of North Carolina, Chapel Hill, 2013-2015.


Bob, Tiffany and Lynne ...at Cannon Mountain, NH, in 1986.

Tiffany received her MBA from Harvard and married Spencer Crawford in 2009. They now live in the San Francisco Bay area.  I'm now much too old / fat to ski, but it certainly was much more fun than golf ever was!!!

My personal wine cellar is now empty! Tiffany and Spencer still hold a few gift bottles of 1981 Bordeaux. I wish Tiffany had been born in 1982! Our only grandchild, Charlotte, was born in 2017, a year when late April freezes dammaged many buds in French red-wine vineyards.

While some people actually earn a living doing this, it was just a hobby for me; guess I'm a true hacker! I started out by learning C at Bell Labs and authoring more than 20 freeware MS-DOS applications with CGA/VGA graphics for Statistical Process Control which I uploaded to CompuServe PCAPP, Library 13, Engr/Tech/Sci between 1988 and 1997.

Later, I developed a few Windows applications using the C API. By then I had gradually shifted to concentrate on development of functions and scripts for major statistical analysis packages: SAS/IML, Gauss, Stata, XLisp-Stat, JMP and, recently, mostly R-packages (LocalControlStrategy, ICEinfer and RXshrink.)