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About SAS and SUDAAN Back to BRFSS
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The programs offered here use SAS version 8.2 for data management and variable creation, and SAS-callable SUDAAN for final analysis and age adjustment (direct standardization).

SAS and SUDAAN are statistical programs that have functionality for analyzing complex sample survey data.  They use different methods for variance estimation and the programs have different functionality within the survey analysis procedures. 

Statistical Analysis System (SAS) is developed and distributed by the SAS Institute.  For more information about SAS, including licensing, technical support, and user groups, see the SAS Institute Web site:  http://www.sasinstitute.com

SUDAAN is developed and distributed by Research Triangle Institute.  For more information about SUDAAN, including licensing, technical support, and user groups, see the SUDAAN Web site: http://www.rti.org/sudaan/