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curtailment  

Finds Binary Outcome Designs Using Stochastic Curtailment
View on CRAN: Click here


Download and install curtailment package within the R console
Install from CRAN:
install.packages("curtailment")

Install from Github:
library("remotes")
install_github("cran/curtailment")

Install by package version:
library("remotes")
install_version("curtailment", "0.2.6")



Attach the package and use:
library("curtailment")
Maintained by
Martin Law
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2021-08-05
Latest Update: 2023-10-25
Description:
Finds single- and two-arm designs using stochastic curtailment, as described by Law et al. (2022) and Law et al. (2021) respectively. Designs can be single-stage or multi-stage. Non-stochastic curtailment is possible as a special case. Desired error-rates, maximum sample size and lower and upper anticipated response rates are inputted and suitable designs are returned with operating characteristics. Stopping boundaries and visualisations are also available. The package can find designs using other approaches, for example designs by Simon (1989) and Mander and Thompson (2010) . Other features: compare and visualise designs using a weighted sum of expected sample sizes under the null and alternative hypotheses and maximum sample size; visualise any binary outcome design.
How to cite:
Martin Law (2021). curtailment: Finds Binary Outcome Designs Using Stochastic Curtailment. R package version 0.2.6, https://cran.r-project.org/web/packages/curtailment. Accessed 15 Jul. 2026.
Previous versions and publish date:
(2026-07-09 07:29), 0.1.1 (2021-08-05 09:50), 0.2.0 (2022-08-05 11:10)
Other packages that cited curtailment R package
View curtailment citation profile
Other R packages that curtailment depends, imports, suggests or enhances
Complete documentation for curtailment
Functions, R codes and Examples using the curtailment R package
Some associated functions: drawDiagram . drawDiagramGeneric . find2stageDesigns . find2stageThetaF . findLoss . findNSCdesigns . findSCdesigns . findSingleSimonDesign . plotByWeight . singlearmDesign . twoarmDesign . 
Some associated R codes: 2arm_1-reproduce-results-functions-find-designs.R . 2arm_3-reproduce-results-functions-for-tables-plots.R . NSC_functions.R . bounds.R . count_CPs_ordered_pairs.R . createPlotAndBounds.R . createPlotAndBounds2arm.R . createPlotAndBoundsSimon.R . createPlotAndBoundsSimonNSCreview.R.R . createPlotAndBoundsSimonReview.R . defunct.R . drawDiagram.curtailment_twoarm.R . drawDiagram.power.htest.R . drawDiagramGeneric.R . drawDiagram_fns.R . fastSearch.R . find2armBlockOCs.R . find2stageDesigns.R . find2stageThetaF.R . findBlock2armUncurtailedMatrix.R . findBlockCP.R . findBounds.R . findCPmatrix.R . findCoeffs.R . findDesignOCs.R . findDesignsGivenCohortStage.R . findLoss.R . findN1N2R1R2NSC.R . findN1N2R1R2twoarm.R . findProbVec.R . findSCdesigns.R . findSimonN1N2R1R2.R . findSingleSimonDesign.R . findThetas.R . findWald.R . findWaldAhernBounds.R . imports.R . insideTheta.R . mstage_bounds.R . outsideTheta.R . plotByWeight.R . plotting_esoteric.R . print.curtailment_simon.R . rmDominatedDesigns.R . sc_bounds.R . simonEfficacy.R . simonEfficacy_alternative.R . simonEfficacy_deprecated.R . singlearmDesign.R . slowSearch.R . twoarmDesign.R .  Full curtailment package functions and examples
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