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Cytel Products Overview
East®
Relied upon by over 140 biopharmaceutical firms and clinical research centers and the FDA, East is the foremost application for the design, monitoring and simulation of adaptive, group sequential and fixed sample size trials.
FlexRandomizer®
Cytel's unique solution for flexible clinical trial randomization integrates with existing eClinical components, including IVRS, drug supply simulators,
inventory tracking systems, and patient information databases.
CrossOver®
Cytel's newest statistical software offers a wide array of 2 x 2 experiments enabling more accurate data analysis. While applicable to many research areas, 2 x 2 crossover trials are especially valuable in clinical research studies, including descriptive and summary PK/PD parameter statistics and plots.
StatXact® and StatXact PROCs for SAS®
The most widely used statistical software for small-sample categorical and nonparametric data problem solving. Cytel's StatXact PROCs version integrates with the latest SAS software so SAS users can access all StatXact procedures and tests.
For more about exact methods, see below.
LogXact® and LogXact PROCs for SAS®
A breakthrough for small-sample logistic regression analysis. For SAS users, LogXact PROCs makes it possible to launch and run all LogXact procedures within your SAS environment.
Egret®
An intuitive toolset for the design and analysis of epidemiological studies.
ToxTools®
Dose-response modeling, benchmark dose estimation and risk assessment software package.
What are exact tests?
StatXact and LogXact utilize Cytel-developed exact statistical methods. Exact tests are hypothesis tests guaranteed to preserve the test's Type I error rate. In other words, these tests, when applied to a null model, will not produce "significant" results more than 5% of the time, if the test is conducted at the .05 level of significance.
At the heart of most exact procedures lie permutation procedures in which the data are repeatedly rearranged (permuted) and the test statistic recalculated. Unlike standard procedures, which rely on approximations to the sampling distribution of a statistic, permutation procedures produce exact sampling distributions.
Why utilize exact tests?
Using superior exact procedures, statisticians can better solve problems and submit acceptable results to peer reviewers, regulators and courts that increasingly prefer use of exact methods over approximations.
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Major Releases
2007 East® 5
2007 CrossOver®
2007 StatXact® 8
2007 LogXact® 8
2005 StatXact 7
2005 LogXact 7
2005 East® 4
2004 LogXact 6
2003 StatXact 6
2003 East Version 3
2002 LogXact 5
2000 ToxTools®
2000 East 2000
1999 Egret®
1999 LogXact 4
1998 LogXact PROCs
1997 StatXact 4
1996 StatXact PROCs
1996 LogXact Windows
1995 East DOS
1995 StatXact3 Windows
1993 LogXact Turbo
1991 StatXact Turbo
1990 StaTable
1989 StatXact DOS
1987 Cytel Founded
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