Table 1.
Characteristics of the COVID-19-positive participants
| Male participants (n=1452) | Female participants (n=2779) | ||
|---|---|---|---|
| Age, years | 54·3 (11·5) | 51·4 (11·7) | |
| BMI, kg/m2 | 26·6 (3·7) | 26·3 (4·9) | |
| Level of education | |||
| Low | 193 (13·3%) | 274 (9·9%) | |
| Medium | 694 (47·8%) | 1484 (53·4%) | |
| High | 532 (36·6%) | 896 (32·2%) | |
| Missing | 33 (2·3%) | 125 (4·5%) | |
| Chronic disease* | |||
| Absent | 1225 (84·4%) | 2209 (79·5%) | |
| Present | 110 (7·6%) | 287 (10·3%) | |
| Missing | 117 (8·1%) | 283 (10·2%) | |
| Smoking | |||
| No | 1356 (93·4%) | 2543 (91·5%) | |
| Yes | 63 (4·3%) | 143 (5·1%) | |
| Missing | 33 (2·3%) | 93 (3·3%) | |
| Method of COVID-19 diagnosis | |||
| Physician's diagnosis | 297 (20·5%) | 602 (21·7%) | |
| Positive SARS-CoV-2 test | 1155 (79·5%) | 2177 (78·3%) | |
| Hospitalised with COVID-19 | 72 (5·0%) | 70 (2·5%) | |
Data are mean (SD) or n (%).
*
See the appendix (p 2) for the full list of included chronic diseases. The characteristics of the COVID-19-negative controls compared with COVID-19-positive participants are provided in the appendix (p 4).