Table 1. Description of the cohort by vaccination status.
| Variable | Total, n = 19,044 | Unvaccinated, n = 6,766 (35.5%) | Vaccinated, n = 12,278 (64.5%) |
|---|---|---|---|
| Age (years) | |||
| ≤30 | 4,432 (23.3) | 2,142 (31.7) | 2,290 (18.7) |
| 31–40 | 4,656 (24.5) | 1,975 (29.2) | 2,681 (21.8) |
| 41–50 | 4,312 (22.6) | 1,275 (18.8) | 3,037 (24.7) |
| 51–60 | 4,101 (21.5) | 975 (14.4) | 3,126 (25.5) |
| ≥61 | 1,543 (8.1) | 399 (5.9) | 1,144 (9.3) |
| Sex | |||
| Female | 14,395 (75.6) | 5,099 (75.4) | 9,296 (75.7) |
| Male | 4,649 (24.4) | 1,667 (24.6) | 2,982 (24.3) |
| Ethnicity | |||
| White | 11,485 (60.3) | 3,338 (49.3) | 8,147 (66.4) |
| South Asian | 4,863 (25.5) | 2,020 (29.9) | 2,843 (23.2) |
| Black | 1,357 (7.1) | 858 (12.7) | 499 (4.1) |
| Other | 1,038 (5.4) | 429 (6.3) | 609 (5.0) |
| Not stated | 301 (1.6) | 121 (1.8) | 180 (1.5) |
| IMD quintile | |||
| 5 (least deprived) | 4,597 (24.3) | 1,323 (19.6) | 3,274 (26.7) |
| 4 | 4,010 (21.2) | 1,265 (18.7) | 2,745 (22.4) |
| 3 | 3,302 (17.4) | 1,175 (17.4) | 2,127 (17.3) |
| 2 | 4,085 (21.6) | 1,682 (24.8) | 2,403 (19.6) |
| 1 (most deprived) | 2,940 (15.5) | 1,252 (18.5) | 1,688 (13.8) |
| Missing | 110 (0.6) | 69 (1.0) | 41 (0.3) |
| Occupation | |||
| Doctor | 3,001 (15.8) | 1,280 (18.9) | 1,721 (14.0) |
| Nurse/midwife/HCA | 7,815 (41.0) | 2,929 (43.3) | 4,886 (39.8) |
| Allied health professional | 1,380 (7.3) | 427 (6.3) | 953 (7.8) |
| Administrative/executive | 3,465 (18.2) | 928 (13.7) | 2,537 (20.7) |
| Healthcare scientist | 871 (4.6) | 237 (3.5) | 634 (5.2) |
| Estates/facilities | 2,306 (12.1) | 907 (13.4) | 1,399 (11.4) |
| Other | 206 (1.1) | 58 (0.9) | 148 (1.2) |
| Previous SARS-CoV-2 serology | |||
| Never tested | 7,456 (39.2) | 3,656 (54.0) | 3,800 (31.0) |
| Negative | 10,314 (54.2) | 2,732 (40.4) | 7,582 (61.8) |
| Positive | 1,274 (6.7) | 378 (5.6) | 896 (7.3) |
| Previous SARS-CoV-2 PCR | |||
| Never tested | 15,136 (79.5) | 5,710 (84.4) | 9,426 (76.8) |
| Negative | 3,072 (16.1) | 761 (11.3) | 2,311 (18.8) |
| Positive | 836 (4.4) | 295 (4.4) | 541 (4.4) |
| Previous COVID-19 work absence | |||
| No absence | 12,619 (66.3) | 4,749 (70.2) | 7,870 (64.1) |
| Symptomatic | 3,698 (19.4) | 1,221 (18.1) | 2,477 (20.2) |
| Household or test and trace contact | 2,727 (14.3) | 796 (11.8) | 1,931 (15.7) |
| Pregnant | 130 (0.7) | 106 (1.6) | 24 (0.2) |
All data presented as n (%).
COVID-19, coronavirus disease 2019; HCA, healthcare assistant; IMD, Index of Multiple Deprivation; PCR, polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.