check.centre {TimeDepFrail}R Documentation

Check Correctness for the Cluster Variable

Description

The function controls that the provided cluster variable is a vector, with at least two levels. Indeed, it is not possible to apply the Time-Dependent Shared Frailty Cox Model with no clusters.

Usage

check.centre(centre)

Arguments

centre

Numerical vector of length equal to the number of individuals in the study, containing the individual grouo/cluster membership.

Value

An error if any condition is not satisfied.


[Package TimeDepFrail version 0.1.0 Index]