Table 1 Characteristics of participants with any N-antibody measurement (N = 270,686)
N = 270,686 | ||
---|---|---|
Number of N-antibody measurements (median [IQR]) | 6 [3, 8] | |
Age at last birthday (years) (median [IQR], percentiles [1, 99]) | 55 [41, 67], [15,85] | |
Sex (%) | Female | 146,823 (54.2) |
Male | 123,863 (45.8) | |
Ethnicity (%) | Non-White | 16,291 (6.0) |
White | 254,395 (94.0) | |
Long-term health condition (%) | No | 199,636 (73.8) |
Yes | 71,050 (26.2) | |
Healthcare worker (%) | No | 257,115 (95.0) |
Yes | 13,571 (5.0) | |
Vaccination* | Not vaccinated | 15,392 (5.7) |
1 vaccination | 19,795 (7.3) | |
2 vaccinations | 76,830 (28.4) | |
3 vaccinations | 158,338 (58.5) | |
4 vaccinations | 216 (0.1) | |
Missing | 115 (0.0) | |
Swab-positive infections† (%) | No infection | 219,663 (81.2) |
Infection before the study period‡ | 22,920 (8.5) | |
Infection during the study period*** | 26,836 (9.9) | |
Infection before and during the study period‡*** | 1267 (0.5) | |
Spike-antibody seropositivity** | No spike seropositivity | 262,513 (97.0) |
Spike seropositive before the study period | 7446 (2.8) | |
Spike seropositive during the study period | 727 (0.3) |