Table 3.
Seroprevalence by main characteristics: univariate logistic regression
| Indicator | Seropositive | OR (95% CI) | P |
|---|---|---|---|
| Age | |||
| 18–64 years | 1.38% (12/868) | 1.00 | |
| 65+ years | 2.07% (46/2218) | 1.51 (0.78–3.15) | 0.204 |
| Gender | |||
| Men | 1.17% (13/1114) | 1.00 | |
| Women | 2.28% (45/1973) | 1.98 (1.04–4.01) | 0.029 |
| Education | |||
| Basic or lower | 0.55% (1/181) | 1.00 | |
| Secondary | 1.84% (18/977) | 3.33 (0.68–60.18) | 0.242 |
| Vocational | 2.23% (11/493) | 4.04 (0.78–74.09) | 0.183 |
| Higher | 2.04% (28/1371) | 3.70 (0.78–66.11) | 0.200 |
| Smoking | |||
| Daily | 0.65% (3/463) | 1.00 | |
| Sometimes | 1.29% (2/155) | 2.00 (0.26–12.20) | 0.449 |
| Never | 2.15% (53/2467) | 3.37 (1.23–13.86) | 0.042 |
| Employment | |||
| Not employed | 1.63% (19/1167) | 1.00 | |
| Employed | 2.03% (39/1918) | 1.25 (0.70–2.31) | 0.422 |
| Occupation | |||
| Students | 1.20% (1/83) | 1.00 | |
| Retired | 1.31% (11/842) | 1.09 (0.21–19.97) | 0.938 |
| Employed | 2.07% (38/1835) | 1.73 (0.37 30.97) | 0.589 |
| Unemployed, housewives, disabled | 2.46% (8/325) | 2.07 (0.37–38.66) | 0.496 |
| Chronic diseases (at least one) | |||
| Yes | 1.67% (20/1200) | 1.00 | |
| No | 2.02% (38/1885) | 1.21 (0.68–2.21) | 0.486 |
| Traveled abroad from 1 March 2020 | |||
| No | 1.82% (47/2583) | 1.00 | |
| Yes | 2.19% (11/503) | 1.21 (0.56–2.38) | 0.579 |
| BMI | |||
| 18.5–24.99 | 2.46% (1/58) | 1.61 (0.95–2.72) | 0.075 |
| <18.5 | 1.72% (28/1137) | 1.12 (0.15–8.36) | 0.912 |
| 25 and more | 1.54% (29/1880) | 1.00 | |
| Close contacts with SARS-CoV-2 positives | |||
| No | 1.6% (46/2880) | 1.00 | |
| Yes | 8.3% (8/96) | 5.60 (2.56–12.22) | <0.001 |
| Don’t know | 3.7% (4/109) | 2.35 (0.83–6.64) | 0.108 |