Table 1.
Demographic and health characteristics of study participants [n (%) or median (IQR)]
| Total | SARS-CoV-2 seropositivity status | ||
|---|---|---|---|
| Positive | Negative | ||
| Participants | 218 | 19 (9%) | 199 (91%) |
| Male gender identity | 216 (99%) | 19 (100%) | 197 (99%) |
| Assigned male at birth | 218 (100%) | 19 (100%) | 199 (100%) |
| Age | 40.0 (34.0, 45.8) | 38.0 (35.0, 45.0) | 40.0 (33.5, 46.0) |
| Swiss nationality | 160 (73%) | 15 (79%) | 145 (73%) |
| Never smoker | 124 (57%) | 13 (68%) | 111 (56%) |
| Additional household members | 1.0 (0, 1.0) | 0 (0, 1.0) | 1.0 (0, 1.0) |
| Number of trips abroad February-October 2020 | 2.0 (0.8,3.0) | 2.0 (1.0, 3.5) | 2.0 (0, 3.0) |
| Ever vaccinated against flu* | 97 (49%) | 6 (35%) | 91 (51%) |
| EuroQoL self-rated health | 88.5 | 82.5 | 89.0 |
| Obligatory schooling | 1 (0.5%) | 0 (0%) | 1 (1%) |
| Vocational | 34 (16%) | 3 (16%) | 31 (16%) |
| Matura | 23 (11%) | 3 (16%) | 20 (10%) |
| Higher technical degree | 61 (28%) | 5 (26%) | 56 (28%) |
| University | 98 (45%) | 8 (42%) | 90 (45%) |
| Missing | 1 | 0 | 1 |
| Employment | |||
| Employed | 167 (77%) | 15 (79%) | 152 (76%) |
| Self-employed | 18 (8%) | 1 (5%) | 17 (9%) |
| Studying | 15 (7%) | 1 (5%) | 14 (7%) |
| Unemployed | 13 (6%) | 1 (5%) | 12 (6%) |
*22 unsure or missing data on previous flu vaccination