StatXact 6.0

StatXact is a specialized statistical package focused on exact inference and nonparametric analysis, designed to deliver reliable results when sample sizes are small, data are sparse or imbalanced, or asymptotic assumptions are questionable. It is widely used in settings such as clinical research, epidemiology, and laboratory studies where rigorous control of type I error and accurate confidence intervals are critical.

Key capabilities include:

• Exact tests for categorical data and contingency tables, including support for small or sparse cell counts and stratified analyses.
• Nonparametric procedures for comparing groups or paired observations, with exact p-values and confidence intervals.
• Methods for ordered categorical data and trend analyses.
• Exact logistic regression for situations where maximum likelihood or asymptotic methods may fail.
• Efficient computation with options to use Monte Carlo techniques for larger problems, balancing speed and precision.
• Clear, publication-ready outputs that report test statistics, p-values, and interval estimates.

By emphasizing exact and distribution-free methods, StatXact helps researchers draw valid conclusions from challenging datasets that can undermine traditional parametric approaches.

StatXact is developed by Cytel Software Corporation. The most popular versions of this product among our users are: 1.0, 3.1 and 6.0. The name of the program executable file is Sxwin32.exe.