setAlphaspendfString

Sets the expression of the base alpha spending function as a string. This function is only used if one needs to display the base alpha spending function as a string. This function DOES NOT update the base alpha spending function. One can use setBaseAlphaspendf() to change the base alpha spending function. The spending functions and their string expressions should be defined only once per object. They should not be updated during any interim update to the design.

S4 class object for creating and managing group sequential designs. It calculates the efficacy and futility boundaries at each look. It allows modifying the design and tracking the design update history.

Hui Zheng

seqmon

Group Sequential Design Class for Clinical Trials

setAlphaspendfString function

<dl> <dt>theObject</dt>
<dd>The sequential design object
</dd> <dt>string0</dt>
<dd>The string of the expression of the base alpha spending function. Its argument need to be 't'.
</dd></dl>

Arguments

Function that Sets the expression of the base alpha spending function as a string
 — setAlphaspendfString

<dl>

 <dt>theObject</dt>
<dd>The sequential design object
</dd>

 <dt>string0</dt>
<dd>The string of the expression of the base alpha spending function. Its argument need to be 't'.
</dd>

</dl>

setAlphaspendfString: Function that Sets the expression of the base alpha spending function as a string

Description

Usage

Value

Arguments

Examples