Table 3: Proportional differences in demographic variables for persons in Census day 2021 population cohort with a household RALF and those without a household RALF.

		With household RALF n = 1,222,339			Without household RALF n = 152,156
		n	%		n	%	Difference (%)
Sex	Female	593,994	48.6		70,682	46.5	2.1
	Male	628,345	51.4		81,474	53.5	−2.1
Age	Up to 18 years old	265,223	21.7		26,198	17.2	4.5
	18 to 45 years old	620,394	50.8		87,801	57.7	−6.9
	45 to 65 years old	248,295	20.3		28,218	18.5	1.8
	65 years and older	88,427	7.2		9,939	6.6	0.6
Ethnic group from EHR	Black	169,701	13.9		18,325	12	1.9
	Mixed and Other	126,162	10		19,413	12.7	−2.7
	South Asian	337,907	27.6		36,744	24.1	3.5
	White	506,286	41.4		65,970	43.4	−2
	Not Stated or Null	82,283	7.1		11,704	7.8	−0.7
Local authority of patient address	City & Hackney	263,443	21.7		39,161	26	−4.3
	Newham	369,917	30.3		44,407	28.9	1.4
	Tower Hamlets	309,397	25.3		36,957	24.3	1
	Waltham Forest	278,946	22.6		30,781	20.2	2.4
	Other	636	0.1		850	0.6	−0.5
IMD 2019 quintile of home LSOA (1 = most deprived, 5 = least deprived)	1	355,659	29.1		38,285	25.2	3.9
	2	656,144	53.7		90,328	59.4	−5.7
	3	157,634	12.9		17,694	11.6	1.3
	4	40,201	3.3		4,328	2.8	0.5
	5	12,065	0.9		671	0.4	0.5
	Null	636	0.1		850	0.6	−0.5

Differences greater than 3% in bold. EHR = Electronic Health Record, LSOA = Lower layer Super Output Area.