Table 1.

Overview of the six service evaluation studies, including the demographic characteristics of the study populations

	Study 1	Study 2	Study 3	Study 4	Study 5	Study 6	Total
Product	MW951S Sigma Virocult Kit	Medline MD202003 dry swab with vial of 0.85% saline	PROVIR Viral Transport Kit (TS/5–34 A)	E&O BM1673- M043-3 Vial + Medium, Alphalab SW1040	Combination kit with ISS PBT093 tube filled with 3 ml TF saline and Citotest 2122-0008 swab	BD Improve Medical Instruments 8,110,111 vial, 550,040 A dry swab	.
Inclusion criteria	≥ 18 years old; read and understood self-swabbing instructions	≥ 18 years old; read and understood self-swabbing instructions	≥ 18 years old; read and understood self-swabbing instructions	≥ 18 years old; read and understood self-swabbing instructions	≥ 18 years old; read and understood self-swabbing instructions	≥ 18 years old; read and understood self-swabbing instructions	.
Location/site	Chessington Regional Test Centre and UK Biocentre	Manchester Airport	Leicester (Birstall Park & Ride)	Leicester (Birstall Park & Ride)	Leicester (Birstall Park & Ride)	Leicester (Birstall Park & Ride)	.
N (recruited)	97	395	689	492	1,005	575	3,253
N (with PCR outcome)	90	348	654	458	892	491	2,933
Median age (years); (min–max)	43(19–67)	40(18–81)	37(18–84)	36(18–81)	38(18–81)	35(18–84)	37(18–84)
Sex: male (n,%)	4 (4)	113 (33)	286 (44)	212 (47)	447 (50)	239 (49)	1,301 (44)
Sex: female (n,%)	9 (10)	117 (34)	362 (55)	243 (54)	445 (50)	252 (51)	1,428 (49)
Sex: missing (n,%)	77 (86)	118 (34)	6 (1)	3 (1)	0	0	204 (7)
Previous swabbing experience (%)	39	20	23	20	56	n/a	29

The original study names were: Study 1: SE-SWTC1/SSES; Study 2: SE-SWTC3/COMBI006; Study 3: TS5-34 A; Study 4: COMBI021; Study 5: COMBI031; and Study 6: COMBI045. PCR, polymerase chain reaction