Table 1.
Participant characteristics for total population and stratified according to serostatus
| Total (n = 9715) | Seronegative (n = 7996) | Seropositive (n = 1719) | ||||||
|---|---|---|---|---|---|---|---|---|
| Sex | n | % | SP (%) | 95% CI | n | % | n | % |
| Men | 4068 | 41.9 | 17.3 | 16.1–18.4 | 3365 | 42.1 | 703 | 40.9 |
| Women | 5643 | 58.1 | 18.0 | 17.0–19.0 | 4629 | 57.9 | 1014 | 59.0 |
| Other | 4 | 0 | – | – | 2 | 0 | 2 | 0.1 |
| Age (mean (s.d.)) | 49 (15) | 49 (15) | 49 (15) | |||||
| Age | ||||||||
| 18–60 years | 6825 | 70.3 | 17.3 | 12.9–17.3 | 5644 | 70.6 | 1181 | 68.7 |
| ≥60 years | 2980 | 30.7 | 18.6 | 13.5–22.5 | 2352 | 29.4 | 538 | 31.3 |
| Level of education | ||||||||
| Practically | 4596 | 47.3 | 18.3 | 17.2–19.4 | 3755 | 47.0 | 841 | 48.9 |
| Theoretically | 5119 | 52.7 | 17.2 | 16.1–18.2 | 4241 | 53.0 | 878 | 51.1 |
| Occupation | ||||||||
| Healthcare | 1477 | 15.2 | 22.0 | 19.9–24.1 | 1152 | 14.4 | 325 | 18.9 |
| Catering | 265 | 2.7 | 22.6 | 17.6–27.7 | 205 | 2.6 | 60 | 3.5 |
| Other | 7973 | 82.1 | 16.7 | 15.9–17.6 | 6639 | 83.0 | 1334 | 77.6 |
SP, seroprevalence; s.d., standard deviation.