ExtractAnalysisStack: ExtractAnalysisStack function

In gpaux/Mediana: Clinical Trial Simulations

Description

This function extracts data stack according to the data scenario, sample id and simulation run specified.

Usage

ExtractAnalysisStack(
  analysis.stack,
  data.scenario = NULL,
  simulation.run = NULL
)

Arguments

analysis.stack	defines a AnalysisStack object.
data.scenario	defines the data scenario index to extract. By default all data scenarios will be extracted.
simulation.run	defines the simulation run index. By default all simulation runs will be extracted.

Value

This function extract a particular set of analysis stack according to the data scenario and simulation runs index. The object returned by the function is a list having the same structure as the analysis.set argument of a AnalysisStack object:

analysis.set

a list of size corresponding to the index number of simulation runs specified by the user defined in the simulation.run argument. This list contains the results generated for each data scenario (data.scenario argument).

References

http://gpaux.github.io/Mediana/

See Also

See Also AnalysisStack.

Examples

## Not run: 
# Generation of an AnalysisStack object
##################################

# Outcome parameter set 1
outcome1.placebo = parameters(mean = 0, sd = 70)
outcome1.treatment = parameters(mean = 40, sd = 70)

# Outcome parameter set 2
outcome2.placebo = parameters(mean = 0, sd = 70)
outcome2.treatment = parameters(mean = 50, sd = 70)

# Data model
case.study1.data.model = DataModel() +
  OutcomeDist(outcome.dist = "NormalDist") +
  SampleSize(c(50, 55, 60, 65, 70)) +
  Sample(id = "Placebo",
         outcome.par = parameters(outcome1.placebo, outcome2.placebo)) +
  Sample(id = "Treatment",
         outcome.par = parameters(outcome1.treatment, outcome2.treatment))

# Analysis model
case.study1.analysis.model = AnalysisModel() +
  Test(id = "Placebo vs treatment",
       samples = samples("Placebo", "Treatment"),
       method = "TTest") +
  Statistic(id = "Mean Treatment",
            method = "MeanStat",
            samples = samples("Treatment"))


# Simulation Parameters
case.study1.sim.parameters = SimParameters(n.sims = 1000,
                                           proc.load = 2,
                                           seed = 42938001)

# Generate data
case.study1.analysis.stack = AnalysisStack(data.model = case.study1.data.model,
                                           analysis.model = case.study1.analysis.model,
                                           sim.parameters = case.study1.sim.parameters)

# Print the analysis results generated in the 100th simulation run
# for the 2nd data scenario for both samples
case.study1.analysis.stack$analysis.set[[100]][[2]]

# Extract the same set of data
case.study1.extracted.analysis.stack =
  ExtractAnalysisStack(analysis.stack = case.study1.analysis.stack,
                       data.scenario = 2,
                       simulation.run = 100)

# A carefull attention should be paid on the index of the result.
# As only one data.scenario has been requested
# the result for data.scenario = 2 is now in the first position ($analysis.set[[1]][[1]]).

## End(Not run)

gpaux/Mediana documentation built on May 31, 2021, 1:22 a.m.