What is StatXact® for?

Statisticians and investigators access the widest offering of validated exact statistics tests and methodologies. The environment is easy to understand or customize. The results are fast and accurate.

What sets it apart?

Other statistical applications often rely on large-scale assumptions for inferences, risking incorrect conclusions from data sets not normally distributed. With StatXact, Cytel's own powerful algorithms make exact inferences by permuting the actually observed data, eliminating the need for distributional assumptions.

Found only in StatXact®

• R language support speeds analyses and command of batch jobs
• Stratified Wilcoxon Signed Rank test utilizing case data on paired samples
• Perform test of correlation across single – not bi-variable – correlation
• Compute p-value for the test of trend in multiple outcomes
• Estimate conditional maximum likelihood of trend parameters in correlated data
• Conduct clustered response tests for correlation significance

What's new in StatXact® 9?

Windows® 7 and Vista® support

Cytel works continuously to give customers a choice of supported operating systems. Cytel's StatXact® and LogXact® are now both approved for Windows® 7 and Windows® Vista.
See the complete Supporting OS list, at right.

R integration

R scripts can be run in conjunction with Cytel’s exact statistics software. R 2.3 or newer is required see example here.

R programs can also run analyses of either StatXact® or LogXact® datasets. All R outputs are visible (except R plots). We also support Cytel's own batch language to automate custom analysis and batch calculations.

Methods
Tests for two ordered correlated multinomials

In the Inference for Correlated Categorical Data, Wilcoxon rank sum, Savage scores, Normal scores and Permutation with general scores tests are added for two ordered multinomials.

Exact designs for two independent binomials in "Power and Sample Size" module

Superiority for ratio of proportions (Score test as well as Wald test)

Noninferiority for ratio of proportions (Score test as well as Wald test)

Equivalence for ratio of proportions (Score test as well as Wald test)

The power is computed using exact unconditional type-1 error

Kolmogorov goodness of fit test multinomial distribution:

Within a 1xc table data, users can now input either expected count or expected probabilities

Range for the parameter Alpha, the value used in computing the confidence interval, has been changed from [0.001,0.999] to [1.e-6,0.999999]

Only StatXact® has:

exact tests on unordered, singly ordered and doubly ordered RxC tables, with Cochran-Mantel-Haenszel (CMH) tests

exact tests for superiority, equivalence and non-inferiority of paired and independent binomial data

exact confidence intervals for differences of proportions, ratio of proportions and odds ratios of binomial data

exact inference in stratified 2xC contingency tables

exact power and sample size for comparing two binomials by Barnard's unconditional exact test (more powerful than Fisher's test)

Crossover™ trial tool free

As a bonus, Cytel’s Crossover™ module for designing trials and analyzing crossover data is free for StatXact 9 and LogXact 9 registered users.

Learn more

Examine examples of StatXact's latest tests and procedures utilizing actual referenced study data.

Download the StatXact brochure including:

• a directory of over 140 exact tests and procedures in today's StatXact
• a comparison between StatXact's exact offerings vs. SAS current release

Questions?

Call our Sales Consultant at +1.617.528.7121 or email info@cytel.com

StatXact® 9 and LogXact® 9 now feature the complete user manual online within the software.