DoptBCD.ui {carat}R Documentation

Command-line User Interface Using Atkinson's D_A-optimal Biased Coin Design


A call to the user-interface function used to allocate patients to one of two treatments using Atkinson's D_A-optimal biased coin design proposed by Atkinson A C (1982) <doi:10.2307/2335853>.


DoptBCD.ui(path, folder = "DoptBCD")



the path in which a folder used to store variables will be created.


name of the folder. If default, a folder named "DoptBCD" will be created.


See DoptBCD.


It returns an object of class "carseq".

The function print is used to obtain results. The generic accessor functions assignment, covariate, cov_num, cov_profile and others extract various useful features of the value returned by that function.


This function provides a command-line user interface and users should follow the prompts to enter data including covariates, as well as levels for each covariate and the covariate profile of the new patient.


Atkinson A C. Optimum biased coin designs for sequential clinical trials with prognostic factors[J]. Biometrika, 1982, 69(1): 61-67.

See Also

See DoptBCD for allocating patients with complete covariate data; See DoptBCD.sim for allocating patients with covariate data generating mechanism.

[Package carat version 2.0.2 Index]