In current rpact version the plot Boundaries p Values Scale (type = 3) only shows efficacy boundaries.
It should include those for futility boundaries.
Examples:
getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getSampleSizeMeans(alternative = 0.2) |> plot(type = 3) getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getSampleSizeSurvival() |> plot(type = 3) getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getSampleSizeRates() |> plot(type = 3) getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getPowerMeans(alternative = 0.2, maxNumberOfSubjects = 100) |> plot(type = 3) getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getPowerRates(maxNumberOfSubjects = 100) |> plot(type = 3) getDesignInverseNormal(informationRates = c(0.3333, 0.6667, 1), futilityBounds = c(-0.1, 0.2)) |> getPowerSurvival(maxNumberOfSubjects = 100, maxNumberOfEvents = 80) |> plot(type = 3)
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