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visit (version 2.2)

parameters: Parameters

Description

Parameters that are shared by multiple functions

Arguments

obs.y

Observed data matrix with \(l\) rows and 4 columns. Row \(k\) in the matrix represents the observed data from dose level \(k\). The columns are

  • column 1: number of patient with no DLT, no immune response

  • column 2: number of patient with no DLT, immune response

  • column 3: number of patient with DLT, no immune response

  • column 4: number of patient with DLT, immune response

prob.mdl

Option of the probability models:

  • NONPARA+: non-parametric model

  • PARA: partially parametric model

  • PARA+: partially parametric+ model

Default value is NONPARA. See visit for details.

priors

A class VTPRIOR object created by vtPriorPar for PARA and PARA+ model.

etas

Vector of length 2 representing \((p_L, p_U)\). \(p_L\): lower bound of DLT risk, below which the current dose is considered absolutely safe; \(p_U\): upper bound of DLT risk above which the current dose is considered too toxic

prev.res

Response rate from the next lower dose level, say, \(l-1\). This can be a scalar representing the mean of the response rate \(E(q^{(l-1)})\), or a vector of posterior samples of the response rate \(q^{(l-1)}\). For \(l=1\), this value is set to \(0\).

dec.cut

Thresholds \(C_1,C_2,C_3\). If the vector length is shorter than \(3\), it is repeated to have \(3\) elements. See visit for details.

digits

Digits for print

seed

Random seed

...

Reserved parameters