The SEQDESIGN Procedure
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Overview
- Getting Started
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Syntax
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Details
Fixed-Sample Clinical Trials One-Sided Fixed-Sample Tests in Clinical Trials Two-Sided Fixed-Sample Tests in Clinical Trials Group Sequential Methods Statistical Assumptions for Group Sequential Designs Boundary Scales Boundary Variables Type I and Type II Errors Unified Family Methods Haybittle-Peto Method Whitehead Methods Error Spending Methods Acceptance (beta) Boundary Boundary Adjustments for Overlapping Lower and Upper beta Boundaries Specified and Derived Parameters Applicable Boundary Keys Sample Size Computation Applicable One-Sample Tests and Sample Size Computation Applicable Two-Sample Tests and Sample Size Computation Applicable Regression Parameter Tests and Sample Size Computation Aspects of Group Sequential Designs Summary of Methods in Group Sequential Designs Table Output ODS Table Names Graphics Output ODS Graphics Acknowledgments
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Examples
Creating Fixed-Sample Designs Creating a One-Sided O’Brien-Fleming Design Creating Two-Sided Pocock and O’Brien-Fleming Designs Generating Graphics Display for Sequential Designs Creating Designs Using Haybittle-Peto Methods Creating Designs with Various Stopping Criteria Creating Whitehead’s Triangular Designs Creating a One-Sided Error Spending Design Creating Designs with Various Number of Stages Creating Two-Sided Error Spending Designs with and without Overlapping Lower and Upper beta Boundaries Creating a Two-Sided Asymmetric Error Spending Design with Early Stopping to Reject H0 Creating a Two-Sided Asymmetric Error Spending Design with Early Stopping to Reject or Accept H0
- References
Examples: SEQDESIGN Procedure
The following examples demonstrate the usage of group sequential methods. Example 80.1 uses the NSTAGES=1 option to derive boundaries of critical values for a fixed-sample design. The remaining examples use different methods to create boundaries for various group sequential designs.
- Creating Fixed-Sample Designs
- Creating a One-Sided O’Brien-Fleming Design
- Creating Two-Sided Pocock and O’Brien-Fleming Designs
- Generating Graphics Display for Sequential Designs
- Creating Designs Using Haybittle-Peto Methods
- Creating Designs with Various Stopping Criteria
- Creating Whitehead’s Triangular Designs
- Creating a One-Sided Error Spending Design
- Creating Designs with Various Number of Stages
- Creating Two-Sided Error Spending Designs with and without Overlapping Lower and Upper beta Boundaries
- Creating a Two-Sided Asymmetric Error Spending Design with Early Stopping to Reject H0
- Creating a Two-Sided Asymmetric Error Spending Design with Early Stopping to Reject or Accept H0