| vaccine {DOVE} | R Documentation |
Specify Vaccination Variables and Entry Time
Description
This function is used in the model statements of dove() and dove2() to specify the vaccination time, vaccination status, and entry time.
Usage
vaccine(entry_time, vaccination_status, vaccination_time)
Arguments
entry_time |
The variable for the time when the participant enters the trial. Entry times must be non-negative and complete. |
vaccination_status |
The variable indicating the vaccination status: 1 = vaccinated; 0 = not vaccinated. Vaccination status must be binary, integer (or be able to be cast as integer without loss of information), and complete. |
vaccination_time |
The variable for the time when vaccination takes place. Vaccination time must be non-negative for vaccinated participants and can be any non-negative value, NA or Inf if a participant was not vaccinated during the trial. |
Details
For participants that were vaccinated, times must obey
entry_time \le vaccination_time. If a case is
found to violate this relationship, its entry_time is set to NA
and it is removed from the analysis.
Value
This function is intended to be used only in the model statements of dove() and dove2(). The result, a matrix, is used internally.