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Xact Software for Small Datasets
Cytel’s Xact software package is the world’s most comprehensive toolkit for statistical analyses of small datasets, or sparse, and missing data.
Specialized Features for Small Sample Methods
As pioneers of small sample methods, Cytel continues to provide innovative solutions to help you meet the challenges of small and sparse datasets. The Xact software package features methods difficult to find elsewhere, particularly exact Poisson Regression, Negative Binomial Regression, and Bayesian methods for small and sparse data.
More than 160 different tests are available in StatXact® software and LogXact® software to ensure strict Type I error control for all small-sample methods.
Contact Us Purchase LicenseEnhance strategic impact
Conduct rapid and precise hypothesis testing for your diverse trial requirements.
Reliable performance
StatXact software ensures top-tier performance with Cytel’s exact inference methods, trusted by industry and academia.
Simplified analysis
Streamline your complex calculations and make findings easy to interpret and share.
Increased power
Use StatXact software for increased confidence in study success.
StatXact® Software 12
More than 160 tests and procedures are available in our StatXact software, transforming the complex algorithms of modern statistical analysis into a validated software. StatXact software offers more tests and procedures for exact inference and power analysis than any other software package on the market. Fast and accurate inferences are compiled in an easy-to-use and communicate interface.
Our experts are constantly developing new types of exact tests, broadening the selection of calculations available to you and your team.
LogXact® Software 12
LogXact® software sets the standard in all facets of regression modeling using Exact methods, including specialized methods like Exact Poisson Regression.
The complexity of conducting regression analysis over multiple covariates is well-documented. The challenge only intensifies when coupled with small sample sizes or missing data sets. LogXact® software aims to provide you with simple and accurate solutions to these difficulties.
LogXact® software can handle many varieties of response data including continuous and binary, polytomous, count, and missing data. It also contains rarified methods such as bias correction for exact Poisson regression and maximum likelihood estimation for multinomial data.
Xact PROCs
Xact PROCs enable even more users to benefit from the methods embedded in StatXact® and LogXact®. StatXact® PROCs [SXP] and LogXact® PROCs [LXP] apply StatXact® and LogXact® robust selection of statistical techniques to the SAS data management system to create a powerful hybrid for data mining and analysis. SXP also combines accurate performance with enhanced speed through methodological innovations like the ‘Important Monte Carlo Sampling’ procedure. SXP is never caught in indefinite calculations, nor does it crash when calculations become too cumbersome. It guarantees that your calculations will either be completed or that you will receive an immediate notification of infeasibility.
Customer Testimonials
“I have worked with StatXact and LogXact for nearly 25 years, and access to the software has given me great reassurance when assessing and analyzing sparse and small sample size data.”
Joseph Cappelleri
Executive Director of Biostatistics, Pfizer Inc.
1,000
Times improved Calculation Speed using StatXact® PROC
>150
Tests available in the Xact® Software Package
1
Cytel’s first software release
1989
StatXact® software release date
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