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SAS Library

This page contains web pages about SAS, most of which have been borrowed and adapted from SAS web pages from all around the world. These pages tend to have in depth information about particular features of SAS and are a good resource when you want to get a greater detailed understanding of particular features in SAS. We are grateful to all of those who have written these pages and have graciously given us permission to borrow and adapt their pages. We must insist that these pages be used strictly for educational and informational purposes only!  If you find a particular page useful, we suggest visiting the site from which the page came because you may find other pages there useful and informative, and you may want to send the author of the page an email letting them know how you liked their page. Links that end with (PDF) are in Portable Document Format (PDF) and can be viewed with the free Adobe Acrobat Reader that is available via download from the Adobe Web site.

Outside Links

• SUGI Proceedings for SUGI 22, 23, 24, 25, 26, 27

Getting Started

• The User Interface of SAS for Windows , adapted from materials created by Oliver Schabenberger
• Overview of the SAS Language adapted from materials created by Professor Oliver Schabenberger
• Overview of SAS Procedures courtesy of Professor Michael Friendly of York University

Statistical Analysis in SAS

• Regression Methods
  • Overview of SAS PROC REG courtesy of Professor Michael Friendly of York University
  • Multivariate regression
  • How do I handle interactions of continuous and categorical variables?
  • Nonlinear Regression in SAS courtesy of Oliver Schabenberger.
  • Fitting Nonlinear Mixed Models with the New NLMIXED Procedure(PDF) by Russ Wolfinger, from SUGI Proceedings, 1999, courtesy of SAS.
  • An Introduction to PROC LOESS for Local Regression(PDF) by Robert Cohen, from SUGI Proceedings, 1999, courtesy of SAS.
  • An Introduction to Partial Least Squares Regression(PDF) by Randall D. Tobias, from SUGI Proceedings, 1995, courtesy of SAS.
  • SAS Software To Fit Generalized Linear Models(PDF) by Gordon Johnston, from SUGI Proceedings, 1993, courtesy of SAS.
• Logistic Regression and Probit
  • A Tutorial on Logistic Regression(PDF) by Ying So, from SUGI Proceedings, 1995, courtesy of SAS).
  • Some Issues in Using PROC LOGISTIC for Binary Logistic Regression(PDF) by David C. Schlotzhauer, courtesy of SAS).
  • Differences Between Statistical Software Packages As Applied to a Binary Response Variable, Courtesy of Professor Ibrahim, Tanta University
  • Performing Exact Logistic Regression with the SAS System(PDF) by Robert Derr, SUGI Proceedings, 2000, courtesy of SAS)
  • Calculating Marginal Probabilities in PROC PROBIT(PDF) by Guy Pascale, courtesy of NESUG
• ANOVA and Experimental Design
  • Analysis of Variance in SAS courtesy of Professor Michael Friendly of York University
  • Repeated Measures ANOVA Using SAS PROC GLM courtesy of The University of Texas at Austin Statistical Services

  • Slicing Interactions in SAS courtesy of Oliver Schabenberger

  • SAS Code for Some Advanced Experimental Designs courtesy of Oliver Schabenberger

  • Comparing Methods of Analyzing Repeated Measures Data

• PROC MIXED
  • Comparing the SAS GLM and MIXED Procedures for Repeated Measurements Analysis(PDF) by Russ Wolfinger and Ming Chang, from SUGI Proceedings, 1995, courtesy of SAS.
  • A Brief Comparison of PROC GLM and PROC MIXED in SAS courtesy of Oliver Schabenberger
• Categorical Data Analysis
  • Recent Advances in Categorical Data Analysis(PDF) by Maura Stokes, from SUGI Proceedings, 1999, courtesy of SAS..
  • Repeated Measures Analysis with Discrete Data Using the SAS System(PDF) by Gordon Johnston and Maura Stokes, from SUGI Proceedings, 1996, courtesy of SAS.
  • Exact Methods in the NPAR1WAY Procedure(PDF) by Anupama Narayanan and Donna Watts, from SUGI Proceedings, 1996, courtesy of SAS.
• Other
  • Factor Analysis Using SAS PROC FACTOR courtesy of The University of Texas at Austin Statistical Services
  • Structural Equation Modeling Using Proc Calis
  • Sample Size Computations and Power Analysis with the SAS System(PDF) by John Castelloe, SUGI Proceedings, 2000, courtesy of SAS)
  • Multiple Imputation for Missing Values: Concepts and New Development(PDF) by Yang Yuan, SUGI Proceedings, 2000, courtesy of SAS)
  • Point & Click Forecasting with the Time Series Forecasting System(PDF) by Charles Hallahan, courtesy of NESUG
  • New SAS Procedures for Analysis of Sample Survey Data(PDF) by Anthony An and Donna Watts, from SUGI Proceedings, 1998, courtesy of SAS.
  • Recent Enhancements and New Directions in SAS/STAT Software(PDF) by Maura E. Stokes and Robert N. Rodriguez, from SUGI Proceedings, 1998, courtesy of SAS.
  • Exploring ELISA Data with the Analyst Application(PDF) by Stewart Fossceco, Knoll Pharmaceutical Company and Nathan Curtis, SAS Institute Inc., from SUGI Proceedings, 1999, courtesy of SAS.
  • Statistical Enhancements in Release 6.12 of the SAS System(PDF) by Maura E. Stokes, from SUGI Proceedings, 1997, courtesy of SAS.
  • Confirmatory and Exploratory Data Analyses Using PROC GENMOD: Factors Associated with Red Light Running Crashes(PDF) by Li wan Chen & Yusuf Mohamedshah, courtesy of NESUG
  • Psychometrics 101(PDF) by Ronald P. Cody, courtesy of NESUG
  • A Smart Guide to Dummy Variables(PDF) by Susan Garavaglia and Asha Sharma, courtesy of NESUG
  • A Simulation Study of Estimators in Stratified Proportional Hazard Models(PDF) by Hsi-Wen Liao, courtesy of NESUG
  • RISK EVALUATION AFTER HEART VALVE REPLACEMENT BY SAS PROC PHREG(PDF) by Chao L. Chen and Lynn Wang, courtesy of NESUG
  • Using proc multtest to perform multiple comparisons

SAS Programming 

• Reading Data/Data Transformation/Data Management
  • Reading Data into SAS adapted from materials created by Oliver Schabenberger
  • The Input Statement: Where It's @(PDF) by Ronald Cody, courtesy of NESUG
  • Data Transformations and Manipulation in SAS adapted from materials created by Oliver Schabenberger
  • Working with SAS Date and Time Functions(PDF) by Andrew H. Karp, courtesy of NESUG  
  • Creative Uses of Functions(PDF) by Steven A. Wright, courtesy of NESUG
  • Data Cleaning 101(PDF) by Ronald Cody, courtesy of NESUG
  • How MERGE Really Works(PDF) by Bob Virgile, courtesy of NESUG
  • Transforming Multiple-Record Data into Single-Record Format when Number of Variables is Large(PDF) by David Izrael & David Russo, courtesy of NESUG
  • Longitudinal Data Techniques: Looking Across Observations(PDF) by Ronald Cody, Ed.D., Robert Wood Johnson, courtesy of NESUG
  • Changing the Shape of Your Data: PROC TRANSPOSE vs. Arrays(PDF) by Bob Virgile, courtesy of NESUG
  • The RETAIN Statement: One Window into the SASData Step(PDF) by Paul Gorrell, courtesy of NESUG
  • Using Dates in SAS in the Year 2000 and Beyond
• Procedures
  • PROC MEANS More than just your average procedure(PDF) by Peter R. Welbrock, courtesy of NESUG
  • The power of PROC FORMAT(PDF) by Jonas V. Bilenas, courtesy of NESUG 
  • Ten Things You Should Know About PROC FORMAT(PDF) by Jack Shoemaker, courtesy of NESUG
  • PROC SQL for DATA Step Die-Hards(PDF) by Christianna S. Williams, courtesy of NESUG
  • An Introduction to the SQL Procedure(PDF) by Chris Yindra, courtesy of NESUG
  • Alternatives to Merging SAS Data Sets … But Be Careful(PDF) by Michael J. Wieczkowski, courtesy of NESUG
  • Handling Missing Values in the SQL Procedure(PDF) by Danbo Yi & MA Lei Zhang, courtesy of NESUG
  • Creating and using indexes in SAS
  • Creating and using formats and format libraries in SAS
  • Using multidimensional arrays
• Good Programming Practices
  • Bulletproofing Your SAS Results(PDF) by Vanessa Hayden, courtesy of NESUG 
  • Clean-up, Comments and Code - Making it Maintainable(PDF) by Clay and Lori Martin, courtesy of NESUG 
  • SAS Program Efficiency for Beginners(PDF) by Bruce Gilsen, courtesy of NESUG 
  • Coding for Posterity(PDF) by Rick Aster, courtesy of NESUG
• ODS
  • ODS, YES! Odious, NO! – An Introduction to the SAS Output Delivery System(PDF) by Lara Bryant, Sally Muller & Ray Pass, courtesy of NESUG 
  • ODS for Data Analysis: Output As-You-Like-It in Version 7(PDF) by Christopher R. Olinger and Randall D. Tobias, from SUGI Proceedings, 1998, courtesy of SAS.
  • Making the SAS Output Delivery System (ODS) work for you(PDF) by William Fehlner, from SUGI Proceedings, 1999, courtesy of SAS.
  • Twisty Little Passages All Alike, Output Delivery System (ODS) Templates Exposed(PDF) by Chris Olinger, from SUGI Proceedings, 1999, courtesy of SAS.
• SAS Macros
  • Getting Started with Macros(PDF) by Ian Whitlock, courtesy of NESUG
  • Moving from Macro Variables to Macros(PDF) by Lisa Sanbonmatsu, courtesy of NESUG
  • Macros from Beginning to Mend A Simple and Practical Approach to the SAS Macro Facility(PDF) by Michael G. Sadof, courtesy of NESUG
  • An Introduction to Macro Variables and Macro Programs(PDF) by Mike S. Zdeb, courtesy of NESUG
  • Creating Macro Variables via PROC SQL(PDF) by Mike S. Zdeb, courtesy of NESUG
  • More About “INTO:Host-Variable” in PROC SQL: Examples(PDF) by John Q. Zhang, courtesy of NESUG
  • Macro Quoting Functions, Other Special Character Masking Tools, and How To Use Them(PDF) by Arthur L. Carpenter, courtesy of NESUG
  • Secrets of Macro Quoting Functions – How and Why(PDF) by Susan O’Connor, courtesy of NESUG
  • &&&, ;;, and Other Hieroglyphics Advanced Macro Topics(PDF) by Chris Yindra, C. Y., courtesy of NESUG
• Other
  • Debugging 101(PDF) by Peter Knapp, courtesy of NESUG
  • Those Missing Values in Questionnaires(PDF) by John R. Gerlach & Cindy Garra, courtesy of NESUG
  • Avoiding Mayhem in the New Millennium: Working with Missing Data(PDF) by JoAnn Matthews, courtesy of NESUG
  • Simplifying Complex Character Comparisons by Using the IN Operator and the Colon (:) Operator Modifier(PDF) by Paul Grant, courtesy of NESUG
  • Arrays: In and Out and All About(PDF) by Marge Scerbo, courtesy of NESUG
  • Complex Arrays Made Simple(PDF) by Mary McDonald, PaineWebber Incorporated, courtesy of NESUG 
  • You Could Look It Up: An Introduction to SASHELP Dictionary Views(PDF) by Michael Davis, courtesy of NESUG 
  • The 'SKIP' Statement(PDF) by Paul Grant, courtesy of NESUG
  • Indexing and Compressing SAS Data Sets: How, Why, and Why Not(PDF) Andrew H. Karp, courtesy of NESUG 

Graphics

• SAS/Graph
  • Introduction to SAS/Graph(PDF) courtesy of Philip Mason of Wood Street Consulting
  • An Introduction to Publication Quality Graphics in SAS for Windows , adapted from materials created by Oliver Schabenberger
  • Using SAS/GRAPH Software to Create Graphs on the Web(PDF) by David J. Caira, from SUGI Proceedings, 1999 courtesy of SAS.
• Other Graphical Methods
  • Painless Graphics: The Click, Drag and Drop Approach of Graph-N-Go(PDF) byJeff Cartier, courtesy of NESUG
  • Are Histograms Giving You Fits? New SAS Software for Analyzing Distributions(PDF) by Nathan Curtis from WUSS Proceedings, 1999, courtesy of SAS.
  • Using SAS/INSIGHT Software as an Introductory Data Mining Platform(PDF) by Robin Way, from SUGI Proceedings, 1999 courtesy of SAS.
  • New Features in SAS/INSIGHT in Version 7 (PDF) by Marc-david Cohen, Hong Chen, Yang Yuan, and Frederick Wicklin, from SUGI Proceedings, 1998 courtesy of SAS.

Transferring Files

• File Transfer with WS_FTP adapted from a page developed by Training Services of ACITS of The University of Texas at Austin.

Links to Other SAS Resources

• Proceedings from NESUG for 1997 through 2000
• Proceedings from SUGI 26, April 2001(PDF)
• SAS Statistics Papers (including Data Analysis Papers, Econometrics and Time Series Papers)
• SAS Statistics Documentation
• SAS Statistics Examples

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