addBMI                  Add Body Mass Index measurement
addCharlsonIndex        Add Charlson Comorbidity Index (CCI) value
                        based on Charlson et al. (1987)
                        (doi:10.1016/0021-9681(87)90171-8
                        <https://doi.org/10.1016/0021-9681%2887%2990171-8>)
                        and Charlson et al. (1994)
                        (doi:10.1016/0895-4356(94)90129-5
                        <https://doi.org/10.1016/0895-4356%2894%2990129-5>)
                        (age-adjusted) version.
addElectronicFrailtyIndex
                        Add Electronic Frailty Index (eFI) value based
                        on Clegg et al. (2016)
                        (doi:10.1093/ageing/afw039
                        <https://doi.org/10.1093/ageing/afw039>)
addEthnicity            Add the ethnicity of a person to a table
addHospitalFrailtyRiskScore
                        Add the hospital frailty risk score as defined
                        in Gilbert et al. (2018)
                        (doi:10.1016/S0140-6736(18)30668-8
                        <https://doi.org/10.1016/S0140-6736%2818%2930668-8>)
addIndexOfMultipleDeprivation
                        Add socioeconomic status as a column to a table
                        using the Index of Multiple Deprivation
addLocation             Add the location to a table
addPolypharmacyCount    Add the maximum number of ingredients to which
                        an individual is simultaneously exposed within
                        a specified window
addSocioEconomicStatus
                        Add socioeconomic status as a column to a table
addTownsend             Add socioeconomic status as a column to a table
                        using the Townsend deprivation index
addUpdatedCharlsonIndex
                        Add Updated Charlson Comorbidity Index (CCI)
                        value based on Quan et al. (2011)
                        (doi:10.1093/aje/kwq433
                        <https://doi.org/10.1093/aje/kwq433>)
getIndexCodelist        Get the codelists used for a specified index
                        calculation
