SAS/STAT 12.1 includes four new procedures and many enhancements.

In previous years, SAS/STAT software was updated only with new releases of Base SAS software, but this is no longer the case. This means that SAS/STAT software can be released to customers when enhancements are ready, and the goal is to update SAS/STAT every 12 to 18 months. To mark this newfound independence, the release numbering scheme for SAS/STAT changed starting with SAS/STAT 12.1. This new numbering scheme will be maintained when new versions of Base SAS and SAS/STAT are shipped at the same time.

SAS/STAT 12.3 is a maintenance release. No new features have been added. The information in this book applies to SAS/STAT 12.1 and SAS/STAT 12.3.