get_time_to_event_at {vaccineff}R Documentation

Construct Time-to-Event at

Description

This function returns both the time-to-event until a reference number of days, as provided in at, and the outcome status at the same point. It uses the exposure time as an auxiliary variable to calculate the time-to-event. The starting point for counting the time-to-event is t0_follow_up, which is determined based on whether a matching strategy is used or not. If the event occurs before the reference date, the end date of the exposure period is used to calculate the time-to-event. This accounts for whether censoring or an event occurred. The outcome status is determined based on whether the outcome date coincides with the end of the follow-up period.

Usage

get_time_to_event_at(
  data_set,
  outcome_date_col,
  censoring_date_col,
  end_cohort,
  at
)

Arguments

data_set

data.frame with cohort information.

outcome_date_col

Name of the column that contains the outcome dates.

censoring_date_col

Name of the column that contains the censoring date.

end_cohort

End date of the study.

at

Time to truncate the follow-up period

Value

data.frame containing time_to_event and outcome_status


[Package vaccineff version 1.0.0 Index]