Fig. 3

a–d Ethnic distribution of the UK population in CPRD, HES, and UK Censuses 2011. Proportions (%) of the currently registered acceptable UK populations of a CPRD GOLD-HES, b CPRD Aurum-HES, and c CPRD-HES in each higher-level ethic category as determined using the algorithm with all available data from CPRD and HES compared to the proportions of the d the general population of the UK in Census 2011 in each higher-level ethnic category obtained from the combined figures from 2011 Census in England and Wales, Northern Ireland, and Scotland