Table 1

Characteristics of study participants

	All participants recruited		Participants in IgG-S analyses		Participants in IgG-N analyses
	n	%	n	%	n	%
Age, years
<30	2291	11	228	15	126	7
30–39	3169	16	243	16	168	10
40–49	2514	12	181	12	143	8
50–59	3928	20	338	22	505	29
60–69	4071	20	279	18	460	26
70+	4222	21	245	16	347	20
Gender
Men	8877	44	636	42	764	44
Women	11 318	56	878	58	985	56
Ethnicity*
White	17 626	88	1241	82	1391	80
Other ethnicity	2526	13	271	18	354	20
Townsend Deprivation Index†
Less deprived	6971	35	453	30	571	33
Average	8249	41	590	39	715	41
More deprived	4975	25	471	31	463	27
UK region
East Midlands	1201	6	76	5	90	5
East of England	938	5	53	4	60	3
London	6059	30	637	42	663	38
North East	832	4	44	3	63	4
North West	2175	11	167	11	205	12
Scotland	1227	6	60	4	70	4
South East	2604	13	166	11	193	11
South West	1379	7	65	4	87	5
Wales	791	4	37	2	56	3
West Midlands	1407	7	113	8	123	7
Yorkshire and the Humber	1582	8	96	6	139	8
All	20 195	100	1514	100	1749	100

IgG-S antibody analyses restricted to SARS-CoV-2 cases with one or more IgG-S tests following diagnosis. IgG-N antibody analyses restricted to SARS-CoV-2 cases with IgG-N test following diagnosis.
*Excludes participants of unknown ethnicity.
†Area-level derived measure of socioeconomic deprivation (categories are defined as: <−2 (less deprived), −2 to <2 (average), 2+ (more deprived)).