Table 1.
Demographic and clinical characteristics of cohort
| Participants (n=3802) | |
|---|---|
| SARS-CoV-2 test result | |
| Negative | 3215 (84·6%) |
| Positive | 587 (15·4%) |
| Missing | 0 |
| Age (years) | |
| 0–17 | 499 (13·1%) |
| 18–39 | 666 (17·5%) |
| 40–64 | 1316 (34·6%) |
| 65–74 | 557 (14·7%) |
| ≥75 | 764 (20·1%) |
| Missing | 0 |
| Sex | |
| Female | 2190 (57·6%) |
| Male | 1612 (42·4%) |
| Missing | 0 |
| Ethnicity | |
| White | 2497 (65·7%) |
| Asian | 152 (4·0%) |
| Black | 58 (1·5%) |
| Mixed, other | 81 (2·1%) |
| Missing | 1014 (26·7%) |
| Socioeconomic deprivation level* | |
| 5 (least deprived) | 1855 (48·8%) |
| 4 | 633 (16·6%) |
| 3 | 646 (17·0%) |
| 1 and 2 (most deprived) | 668 (17·6%) |
| Missing | 0 |
| Household size | |
| 1 | 824 (21·7%) |
| 2–4 | 2341 (61·6%) |
| 5–8 | 408 (10·7%) |
| ≥9 | 135 (3·6%) |
| Missing | 94 (2·5%) |
| Settlement or population density | |
| Rural | 1986 (52·2%) |
| Urban | 1816 (47·8%) |
| Missing | 0 |
| Smoking status | |
| Non-smoker | 1125 (29·6%) |
| Active smoker | 413 (10·9%) |
| Ex-smoker | 1753 (46·1%) |
| Missing | 511 (13·4%) |
| Pregnancy | |
| No | 3742 (98·4%) |
| Yes | 60 (1·6%) |
| Missing | 0 |
| BMI† | |
| Normal weight | 1296 (34·1%) |
| Overweight | 1095 (28·8%) |
| Obese | 680 (17·9%) |
| Severely obese | 145 (3·8%) |
| Missing | 586 (15·4%) |
| Hypertension | |
| No | 2708 (71·2%) |
| Yes | 1094 (28·8%) |
| Missing | 0 |
| Chronic kidney disease | |
| No | 3595 (94·6%) |
| Yes | 207 (5·4%) |
| Missing | 0 |
| Diabetes | |
| No | 3299 (86·8) |
| Yes | 503 (13·2) |
| Missing | 0 |
| Chronic heart disease | |
| No | 3202 (84·2%) |
| Yes | 600 (15·8%) |
| Missing | 0 |
| Chronic respiratory disease | |
| No | 3544 (93·2%) |
| Yes | 258 (6·8%) |
| Missing | 0 |
| Malignancy or immunocompromised | |
| No | 3164 (83·2%) |
| Yes | 638 (16·8%) |
| Missing | 0 |
Data are n (%). SARS-CoV-2=severe acute respiratory syndrome coronavirus 2. BMI=body-mass index.
*
Socioeconomic deprivation level was assessed at the practice level using the English Index of Multiple Deprivation quintiles.23
†
BMI categories were based on WHO classification24 (normal weight 18·5–24·9 kg/m2, overweight 25·0–29·9 kg/m2, obese 30·0–39·9 kg/m2, severely obese ≥40 kg/m2).