Fig. 1From: Completeness, agreement, and representativeness of ethnicity recording in the United Kingdom’s Clinical Practice Research Datalink (CPRD) and linked Hospital Episode Statistics (HES)a–c Proportion of CPRD and HES populations with at least one ethnicity recording. Proportions (%) of all acceptable and currently registered acceptable patients with at least one ethnicity record, including and excluding unknown ethnicity codes; additionally for primary care-only data, the proportions of all acceptable patients registered at their GP prior to QOF ethnicity recording incentivisation (pre-1 April 2006), during QOF incentivisation (1 April 2006–31 March 2011), and after QOF incentivisation (from 1 April 2011) for a the UK population in CPRD GOLD, b the English population in CPRD Aurum, and c the English population using CPRD-HESBack to article page