The SEQTEST Procedure
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Overview
- Getting Started
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Syntax
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DetailsInput Data SetsBoundary VariablesInformation Level Adjustments at Future StagesBoundary Adjustments for Information LevelsBoundary Adjustments for Minimum Error SpendingBoundary Adjustments for Overlapping Lower and Upper beta BoundariesStochastic CurtailmentRepeated Confidence IntervalsAnalysis after a Sequential TestAvailable Sample Space Orderings in a Sequential TestApplicable Tests and Sample Size ComputationTable OutputODS Table NamesGraphics OutputODS Graphics
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ExamplesTesting the Difference between Two ProportionsTesting an Effect in a Regression ModelTesting an Effect with Early Stopping to Accept H0Testing a Binomial ProportionComparing Two Proportions with a Log Odds Ratio TestComparing Two Survival Distributions with a Log-Rank TestTesting an Effect in a Proportional Hazards Regression ModelTesting an Effect in a Logistic Regression ModelConducting a Trial with a Nonbinding Acceptance Boundary
- References
Subsections:
- 90.1 Testing the Difference between Two Proportions
- 90.2 Testing an Effect in a Regression Model
- 90.3 Testing an Effect with Early Stopping to Accept
- 90.4 Testing a Binomial Proportion
- 90.5 Comparing Two Proportions with a Log Odds Ratio Test
- 90.6 Comparing Two Survival Distributions with a Log-Rank Test
- 90.7 Testing an Effect in a Proportional Hazards Regression Model
- 90.8 Testing an Effect in a Logistic Regression Model
- 90.9 Conducting a Trial with a Nonbinding Acceptance Boundary
The following examples perform group sequential tests with various designs and test statistics.
Four statistic scales are available for the input boundary values, the input test statistic, and the displayed test information in the SEQTEST procedure. These are the maximum likelihood estimator scale, score statistic scale, standardized normal Z scale, and p-value scale. There is a unique one-to-one transformation between any two of the scales, and you can use different scales for the input boundary values and input test statistic. These boundary values and test statistic are displayed with the scale specified in the BOUNDARYSCALE= option in the SEQTEST procedure.