Table 1. Summary of English and Danish study designs.

	England	Denmark
Inclusion criteria	Adults aged 18 and over, registered with a GP for at least 3 months prior to study entry.	Adults aged 18 and over, recorded and alive at cohort entry according to the Civil Registration System.
Exclusion criteria	Missing age, sex or patient level IMD, household size>15 or household size missing.	Missing age, sex or income.
Denominator population entry point	Latest of: Meeting inclusion criteria or 1 March 2018.	Latest of: Meeting inclusion criteria or 1 March 2018.
Denominator population exit point	Earliest of death, deregistering with their GP or end of study period.	Earliest of death, emigration according to the Civil Registration System or end of study period.
Exposure
Deprivation measurement	Deprivation quintiles based on IMD in the month of interest.	Deprivation quintiles based on household income in 2020.
Outcomes
Hospital admissions	Hospital admissions with ICD-10 code for heart failure, MI, stroke or VTE as the primary reason for admission (this refers to primary reason for spell in hospital).	Hospital admissions with ICD-10 code for heart failure, MI, stroke or VTE as the primary reason for admission.

GP, general practitioner; ICD-10, International Classification of Diseases: Version 2010; IMD, Index of Multiple Deprivation; MI, myocardial infarction; VTE, venous thromboembolism