Add Vital Status Event Column

Creates or updates the `event_vitalstatus` column based on existing vital status and disease assessment data. Uses existing vital status when available, otherwise sets to 0 if disease assessment date exists.

Usage

add_vitalstatus_event(df)

Arguments

df

A data frame with `vital_status` and `latest_assessment_date_disease` columns

Value

A data frame with added or updated `event_vitalstatus` column

Examples

if (FALSE) { # \dontrun{
df <- data.frame(
  vital_status = c(1, NA, NA),
  latest_assessment_date_disease = c(NA, as.Date("2022-01-01"), NA)
)
result <- add_vitalstatus_event(df)
} # }