chi_dob: Extract date of birth from Community Health Index (CHI)...

In SurgicalInformatics/chiTools: Tools Extracting Information From the Scottish Community Health Index Number (CHI)

Description

The Community Health Index (CHI) is a population register used in Scotland for health care purposes. The CHI number uniquely identifies a person on the index. Note 'cutoff_2000'. As CHI has only a two digit year, you need to specify whether year is 1900s or 2000s. The cut-off determines the year before that number is considered 2000s i.e. at cutoff_2000 = 20, "18" is considered 2018, rather than 1918.

Usage

chi_dob(.data, cutoff_2000 = 20)

Arguments

.data	Character. A vector of CHIs as characters/strings.
cutoff_2000	Integer. Two-digit year before which is considered 2000s.

Value

Vector of 'Dates'.

Examples

library(dplyr)
# These CHIs are not real.
chi = c("1009701234", "1811431232", "1304496368")

chi_dob(chi)

tibble(chi = chi) %>%
  mutate(
    dob = chi_dob(chi)
  )

SurgicalInformatics/chiTools documentation built on Feb. 5, 2021, 8:28 p.m.