SamplingDesignTools: Tools for Dealing with Complex Sampling Designs

prepare_cohort

R Documentation

<Private function> Prepare the skeleton cohort for subsequent steps.

<Private function> Prepare the skeleton cohort for subsequent steps.

prepare_cohort(
  cohort,
  t_start_name,
  t_name,
  y_name,
  match_var_names,
  print_message = TRUE
)

`cohort`	Cohort data with at least the following information on each subject: start time (if not 0 for all subjects) and end time of follow-up, censoring status and matching variables (if any). A `data.frame` or a matrix with column names.
`t_start_name`	Name of the variable in `cohort` for the start time of follow-up. A `string`.
`t_name`	Name of the variable in `cohort` for the event or censoring time. A `string`.
`y_name`	Name of the column of censoring status in each matched set in `cohort`, with 1 for event and 0 for censoring. A `string`.
`match_var_names`	Name(s) of the match variable(s) in `cohort` used when drawing the NCC. A `string` vector.
`print_message`	Whether to print the message regarding start and exit time. Default is `TRUE`.