For more detail on how pre-existing conditions and main pre-existing conditions are derived, refer to https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/methodologies/measuringpreexistinghealthconditionsindeathcertificationdeathsinvolvingcovid19march2020 3 Includes the following respiratory conditions (ICD-10 codes in bra...