Demographics of study population
| All participants, n (%) | Seropositive, n (%) | Seronegative, n (%) | Seroprevalence, (%) | P value | |
| n | 956 | 442 | 514 | 46.2 | |
| Age (years) | 41.0 (31.0–50.0) | 41.0 (32.0–50.0) | 40.0 (31.0–50.0) | – | 0.69 |
| Sex | |||||
| Male | 260 (27.2) | 110 (24.9) | 150 (29.2) | 42.6 | 0.33 |
| Female | 679 (71.0) | 324 (73.3) | 355 (69.1) | 47.7 | |
| Not stated | 17 (1.8) | 8 (1.8) | 9 (1.8) | 47.0 | |
| Ethnicity | |||||
| White | 691 (72.3) | 294 (66.5) | 397 (77.2) | 42.5 | 0.002 |
| Mixed | 22 (2.3) | 10 (2.3) | 12 (2.3) | 45.5 | |
| Asian | 170 (17.8) | 92 (20.8) | 78 (15.2) | 54.1 | |
| Black | 36 (3.8) | 26 (5.9) | 10 (1.9) | 72.2 | |
| Other | 25 (2.6) | 13 (2.9) | 12 (2.3) | 52.0 | |
| Not stated | 12 (1.3) | 7 (1.6) | 5 (1.0) | 58.3 | |
| Index of multiple deprivation score | 780 | −0.04 (0.82) | −0.04 (0.77) | 0.99 |
Median and IQRs are provided. Age was compared using a two-tailed unpaired Mann-Whitney test. Categorical data were compared using the χ2 test. The index of multiple deprivation scores were compared using an unpaired two-tailed t-test.