Local Control ONLINE Access

References, Papers, Software and Demos related to...

LC Methods of Adjustment for Treatment Selection Bias
and Confounding in Observational Research

LC Tutorials and Case-Studies...

Data and Documentation Downloads

Recent Publications...

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.

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.  Local Control Strategy: Simple Analyses of Air Pollution Data can reveal Heterogeneity in Longevity Outcomes. Risk Analysis 2017; to appear.  View/Download 21-page draft.

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!!!

LC Software and Animation Downloads...

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.] March 2010 Update: Download SAS Macros, Doc PDF and Data Archive

Obenchain RL. USPS: R package for Unsupervised and Supervised Propensity Scoring and Instrumental Variable Adjustment.  2006-2009. Download Windows package from this site

Obenchain RL.  The "LC Carousel" Archive ...an Adobe Flash animation describing the activities within the Four Phases of a Local Control analysis that assure results will ultimately be objective (scientifically valid.)  Updated June 2014.  Download ZIP Archive