Simply initialized a data frame to represent the CRC data in a simulation experiment.
The population size.
A string specifying a function for generating covariate values.
By default, there are no covariates. The only non-default method at present
This is just a workhorse function, typically called by
A data.frame representing a population, possibly with covariates. If there are no covariates, it is just a single column labeled ‘id’.