Ch9-Power: Extract the Power results
In PwrGSD: Power in a Group Sequential Design
Description
Usage
Arguments
Value
Author(s)
See Also
Examples
Description
The function ‘Power’ is used to summarize the ‘cpd.PwrGSD’ object into a
dataframe containing power and type II error, summed over analysis
times. The data frame is stacked by rows of ‘descr’ and by ‘stat’
(if there are multiple statistics being profiled per each component of
‘Elements’), for generating tables or performing other computations.
Usage
1
Arguments
object
an object of class cpd.PwrGSD
subset
you may extract a subset via a logical expression in the
variables of the index dataframe, descr
nlook.ind
(optional) a vector containing a subset of the
indices of analysis times over which the sum is formed. Use this
for example if you want to know the probability of stopping by the
kth analysis under an unfavorable alternative. Set nlook.ind to
1:k
Value
a dataframe, stacked by rows of ‘descr’ and then by choices of ‘stat’
Author(s)
Grant Izmirlian <izmirlian@nih.gov>
See Also
cpd.PwrGSD and PwrGSD
Examples
1
## See the `cpd.PwrGSD' example
PwrGSD documentation built on May 2, 2019, 4:54 p.m.
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Description Usage Arguments Value Author(s) See Also Examples
Description
The function ‘Power’ is used to summarize the ‘cpd.PwrGSD’ object into a dataframe containing power and type II error, summed over analysis times. The data frame is stacked by rows of ‘descr’ and by ‘stat’ (if there are multiple statistics being profiled per each component of ‘Elements’), for generating tables or performing other computations.
Usage
1 |
Arguments
object |
an object of class |
subset |
you may extract a subset via a logical expression in the
variables of the index dataframe, |
nlook.ind |
(optional) a vector containing a subset of the indices of analysis times over which the sum is formed. Use this for example if you want to know the probability of stopping by the kth analysis under an unfavorable alternative. Set nlook.ind to 1:k |
Value
a dataframe, stacked by rows of ‘descr’ and then by choices of ‘stat’
Author(s)
Grant Izmirlian <izmirlian@nih.gov>
See Also
cpd.PwrGSD and PwrGSD
Examples
1 | ## See the `cpd.PwrGSD' example
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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