References, Papers, Software and Demos related to...
NU Learning Adjustment for Treatment Selection Bias
and Confounding in Observational Research
GoTo: Case-Study Data and Documentation Download PAGE
NU Publications and Concept Study-AIDS PAGE
Recent Publications...
Obenchain RL and Young SS. Supplementary Materials for: EPA Particulate Matter Data - Analyses using Local Control Strategy. arXiv:2209.05461 [cs.CY, stat.AP] November 2022 Download 361KB ZIP Archive of R-code and Data.
Bob Obenchain. Nonparametric and Unsupervised: NU Learning from Big Data. Biopharmaceutical Reports. 2020 - Winter Edition of ASA Section Newsletter. View/Download 4-pages.
Obenchain RL, Young SS and Krstic, Goran. Low-level radon exposure and lung cancer mortality. Regulatory Toxicology and Pharmacology 2019 Oct;107: 104418 (8 pages). View/Download 17-page draft.
Obenchain RL and Young SS. Local Control Strategy: Simple Analyses of Air Pollution Data can reveal Heterogeneity in Longevity Outcomes. Risk Analysis 2017; 37(9): 1742-1753. View/Download 21-page draft.
Lopiano KK, Obenchain RL and Young SS. Fair Treatment Comparisons in Observational Research. Statistical Analysis and Data Mining 2014; 7: 376-384. View/Download 13-page paper.
Obenchain RL and Young SS. Advancing Statistical Thinking in Health Care Research. Journal of Statistical Theory and Practice 2013; 7: 456-469. View/Download 18-page paper; Download dataset and R-code ZIP archive.
Obenchain RL, Hong Q, Zagar A and Faries DE. Observational Data Analysis: MSE Loss Comparisons of Local Control with Parametric Modeling Approaches. 2011; Unpublished. View/Download 18-page paper.
Early Papers...
Obenchain RL. “Nearest Neighbors Analysis for PRRAP, the Probable Report Rate Analysis Plan.” TM-79-1711-4. Holmdel, NJ: AT&T Bell Laboratories. 1979. View/Download
Obenchain RL, Melfi CA. Propensity score and Heckman adjustments for treatment selection bias in database studies. 1997 Proceedings of the Biopharmaceutical Section. Alexandria, VA: American Statistical Association. 1998, 297-306. View/Download
Kereiakes DJ, Obenchain RL, Barber BL, et al. Abciximab provides cost effective survival advantage in high volume interventional practice. Am Heart J 2000; 140: 603-610. [Propensity score binning.] Paper Technical Appendix
Obenchain TL. Methods for the Analysis of Non-Randomized Studies: Variations on "Propensity Scoring." Undergraduate Honors Thesis, Mathematical Methods in the Social Sciences (MMSS), Northwestern University 2003. (89 pages.) View/Download
Obenchain RL. Unsupervised Propensity Scoring: NN and IV Plots. 2004 JSM Proceedings on CD-ROM. (8 pages.) Alexandria, VA: American Statistical Association. 2005. View/Download
Obenchain RL. Identifying Meaningful Patient Subgroups via Clustering - Sensitivity Graphics. 2006 JSM Proceedings on CD-ROM. (6 pages.) Alexandria, VA: American Statistical Association. 2007.View/Download
Obenchain RL. "The Local Control Approach using JMP." Chapter 7 of Analysis of Observational Health Care Data Using SAS. Cary, NC; SAS Press, January 2010. View/Download Chapter 7 Outline (Figures in Color) Purchase a copy of the book from SAS or Amazon!!!
NU Learning Software and Animation Downloads...
Obenchain RL. NU.Learning: R package, Ver. 1.5 Nonparametric and Unsupervised Learning for Analysis of Cross-Sectional Observational Data. September 2023. View/Download NU.Learning_in_R.PDF [44-pages]; View/Download CRAN R-manual PDF; Download R-package tar.gz archive; Download R-package ZIP archive for Windows; To Visit the official CRAN site, Right-Click this Link and open it in a “New Window.”
Wolfinger RD. JMP Add-In for “Local Control” Phases One and Two. 2015. Right-Click this Link to the SAS/JMP User Community, and open it in a “New Window.”
Obenchain RL. JMP Scripts for “Local Control” Phases One and Two. 2006-2014. Update for JMP 11+ : Download Archive of JMP Scripts, Documentation and Data
Obenchain RL. SAS Macros for “Local Control” Phases One and Two. [Copyright (c) 2009, Foundation for the National Institutes of Health; Apache 2.0 License.] 2019 MAJOR Update: Download SAS Macros, Doc PDF and Data Archive
Obenchain RL. The "LC Carousel" Archive ...this animation used Adobe Flash software that passed its end-of-life deadline in 2020.