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SAS, Release 9.1.3

OIT is no longer distributing The SAS System, Release 9.1.3 (aka 9.1 TS1M3). Current SAS 9.1.3 users can continue to use this release, or can update to SAS 9.3.

SAS 9.1.3 is a maintenance release for all earlier SAS 9.x releases. It installs over earlier SAS 9.x. You cannot run more than one SAS 9.1 release on the same system. SAS Institute is now issuing most Hot Fixes for 9.1.3, and has released Service Pack 4. Service Pack 4 is a prerequisite for all later Hot Fixes. To get Service Pack 4 go to Hint:If you have not installed "Optional Products", get "Service Pack 4 Foundation Only".

System Requirements

Hardware Requirements

Windows Linux
Intel or Intel-compatible Pentium II class processor Intel or Intel-compatible Pentium II class processor
128 MB minimum memory, more for improved performance 64 MB minimum memory
128 MB minimum swapfile space  
SVGA Monitor X Windows with minimum 256 colors
780 MB free hard disk space for standard install 885 MB free hard disk space for standard install

Software Requirements
Windows Linux
Windows Vista Business, Enterprise or Ultimate (32-bit) (*) OR Red Hat Enterprise Linux 4 OR
Windows XP Professional x64 OR Red Hat Enterprise Linux 2.1 OR
Windows XP Professional, Service Pack 1 or higher OR Red Hat Linux 8
Windows 2000 Professional, Service Pack 3 or higher OR  
Windows NT Version 4.0, Service Pack 6a or higher  
File system support for long filenames is required.  
For Windows NT, the NTFS file partition is recommended.  
Internet Explorer version 5 or higher Netscape 6.2.3

(*) Starting with CD set 64. Not all products are supported under Windows Vista. See for list of products supported.

Note that SAS 9.x for Windows cannot be run on Window 98/ME or earlier operating systems, on Windows XP or Vista Home Editions, or on Intel Itanium based 64-bit systems .

Getting SAS
If you wish to get SAS under the University of Massachusetts site license program, please contact the OIT Help Center at 545-9730 or stop by A109 LGRC (Monday - Friday, 9:00 a.m. to 5:00 p.m.).

Technical Support and Consulting
OIT provides technical support for installation and license renewal only. Contact Eva Goldwater, 413-545-2949. Consulting on software usage and statistical questions is available through the Biostatistics Consulting Center . Online Documentation for SAS 9.1.3..

Online Tutor
The site license includes SAS Online Tutor, a series of self-paced learning modules covering topics from Beginning to Advanced SAS Programming techniques. SAS Online Tutor is distributed on separate CDs, available by request, at no additional cost.
Online Tutor can be installed and used with SAS 9.2, but using the newer e-Learning modules is recommended.

Compatibility with SAS Release 8
Data files and formats catalogs created with SAS version 8.0 or higher under Windows can be used directly with SAS version 9.1 under Windows.

SAS on x64 systems
SAS 9.1.3 (32-bit software) for Windows can be installed on x64 systems running Windows XP Professional, but not on Itanium-based 64-bit systems. However, not all products included in the UMass Academic site license bundle are compatible with x64. To see a list of products you can install under x64, go to and search for 16568.

SAS 9.1.3 (32-bit software) is not supported for Windows Vista 64-bit systems.

What's New in SAS, Release 9.1
The following is an abbreviated list of features introduced since Release 8.2. For a complete list see

New Procedures
These procedures perform prospective analyses for a variety of analyses, including t tests, equivalence tests, and confidence intervals for means; exact binomial, chi-square, Fisher's exact, and McNemar tests for proportions; multiple regression, linear models and correlation; and rank tests for comparing survival curves.

The ROBUSTREG procedure provides resistant (stable) results in the presence of outliers by limiting the influence of outliers. ROBUSTREG procedure acts as an integrated tool for outlier detection and robust regression with various contaminated data.

The SURVEYFREQ procedure produces one-way to n-way frequency and crosstabulation tables for survey data. These tables include estimates of totals and proportions (overall, row percentages, column percentages) and the corresponding standard errors, as well as tests of association. PROC SURVEYFREQ computes these variance estimates based on the sample designs that can include stratification, clustering, and unequal weighting.

The SURVEYLOGISTIC procedure performs logistic regression on data that arise from a survey sampling scheme. PROC SURVEYLOGISTIC incorporates complex survey sample designs, including designs with stratification, clustering, and unequal weighting, in its estimation process.

TPHREG Procedure
The experimental TPHREG procedure adds the CLASS statement to the PHREG procedure. The CLASS statement enables you to specify categorical variables as explanatory variables.

FORMAT Procedure
User-created formats and informats can now have names up to (at least) 30 characters. The precise limit depends on the type of variable and whether it is a format or informat.

LIFETEST Procedure
The new SURVIVAL statement enables you to create simultaneous confidence intervals for the survivor function S(t) and to specify a transformation for computing the confidence bands and the pointwise confidence intervals.

LOGISTIC Procedure
The new SCORE statement enables you to score new data sets and compute fit statistics and ROC curves without refitting the model. Information for a fitted model can be saved to a SAS data set with the OUTMODEL= option, while the INMODEL= option inputs the model information required for the scoring.
The new STRATA statement enables you to perform conditional logistic regression on highly stratified data using the method of Gail, Lubin, and Rubenstein (1981). The OFFSET option is now enabled for logistic regression.

FREQ Procedure
The ZEROS option in the WEIGHT statement includes zero-weight observations in the analysis. For one-way tables, the ZEROS option includes zero-weight levels in chi-square tests and binomial statistics. For multiway tables, the ZEROS option includes zero-weight levels in kappa statistics.
The FREQ procedure now produces exact confidence limits for the common odds ratio and related tests.

Optional Products
The optional products that were formerly distributed separately with SAS 9.1.3 are now included in the SAS 9.2 distribution media. There are no more "optional" product distributions.


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