ExitP

Exit probabilities with given drift, upper bounds, and times of test.

group sequential design

This is a core implementation of 'SAS' procedures for linear models - GLM, REG, ANOVA, TTEST, FREQ, and UNIVARIATE. Some R packages provide type II and type III SS. However, the results of nested and complex designs are often different from those of 'SAS.' Different results does not necessarily mean incorrectness. However, many wants the same results to SAS. This package aims to achieve that.
Reference: Littell RC, Stroup WW, Freund RJ (2002, ISBN:0-471-22174-0).

Kyun-Seop Bae

sasLM

'SAS' Linear Model

ExitP function

<dl> <dt>Theta</dt>
<dd>drift value defined by Lan-DeMets. See the reference.</dd> <dt>bi</dt>
<dd>upper bound z-values</dd> <dt>ti</dt>
<dd>times of test. These should be in the range of [0, 1]. If omitted, even-interval is assumed.</dd></dl>

Arguments

Author

Exit Probability with cumulative Z-test in Group Sequential Design — ExitP

<dl>

 <dt>Theta</dt>
<dd>drift value defined by Lan-DeMets. See the reference.</dd>

 <dt>bi</dt>
<dd>upper bound z-values</dd>

 <dt>ti</dt>
<dd>times of test. These should be in the range of [0, 1]. If omitted, even-interval is assumed.</dd>

</dl>

ExitP: Exit Probability with cumulative Z-test in Group Sequential Design

Description

Usage

Value

Arguments

Author

Details

References

Examples