Table 2. Factors associated with SARS-CoV-2 seropositivity by Roche.
| Total N = 763 | SARS-CoV-2 seropositive N = 221 (29%) | SARS-CoV-2 seronegative N = 542 | OR (95%CI) | p-value | |
|---|---|---|---|---|---|
| Age | |||||
| <30 years | 409 (53.6) | 129 (58.4) | 280 (51.7) | 1 | |
| ≥30 years | 354 (46.4) | 92 (41.6) | 262 (48.3) | 0.8 (0.6–1.0) | 0.092 |
| Ethnicity | |||||
| White | 283 (37.2) | 80 (36.4) | 203 (37.6) | 1 | |
| Non-white | 477 (62.8) | 140 (63.6) | 337 (62.4) | 1.1 (0.8–1.5) | 0.751 |
| Occupation | |||||
| Healthcare | 52 (6.9) | 17 (8.0) | 35 (6.5) | 1 | |
| Essential non-healthcarea | 90 (12.0) | 30 (14.1) | 60 (11.2) | 1.0 (0.5–2.2) | 0.938 |
| Non-essential | 607 (81.0) | 166 (77.9) | 441 (82.3) | 0.8 (0.4–1.5) | 0.410 |
| Any comorbidity b | |||||
| No | 613 (80.3) | 179 (81.0) | 434 (80.1) | 1 | |
| Yes | 150 (19.7) | 42 (19.0) | 108 (19.9) | 0.9 (0.6–1.4) | 0.771 |
| BMI (kg/m2) | 31.3 (5.9) | 32.1 (6.2) | 31 (5.8) | 1.03 (1.00–1.06) | 0.024 |
| Height (cm) | 160.8 (6.5) | 159.5 (6.1) | 161.3 (6.6) | 0.96 (0.93–0.98) | 0.001 |
| Potential COVID-19 symptoms during pregnancy | |||||
| Fever | 78 (10.2) | 45 (20.4) | 33 (6.1) | 3.9 (2.4–6.4) | <0.001 |
| Cough | 134 (17.6) | 68 (30.8) | 66 (12.2) | 3.2 (2.2–4.7) | <0.001 |
| Sore throat | 80 (10.5) | 42 (19.0) | 38 (7.0) | 3.1 (1.9–5.0) | <0.001 |
| Myalgia | 98 (12.8) | 64 (29.0) | 34 (6.3) | 6.1 (3.9–9.7) | <0.001 |
| Asthenia | 89 (11.7) | 58 (26.2) | 31 (5.7) | 5.9 (3.7–9.5) | <0.001 |
| Coryza | 164 (21.5) | 79 (35.7) | 85 (15.7) | 3.0 (2.1–4.3) | <0.001 |
| Anosmia | 86 (11.3) | 74 (33.5) | 12 (2.2) | 22.2 (12.2–44.1) | <0.001 |
| Ageusia | 82 (10.7) | 71 (32.1) | 11 (2.0) | 22.8 (12.3–46.6) | <0.001 |
| Dyspnea | 72 (9.4) | 51 (23.1) | 21 (3.9) | 7.4 (4.4–13.0) | <0.001 |
| Headache | 137 (18.0) | 75 (33.9) | 62 (11.4) | 4.0 (2.7–5.9) | <0.001 |
| Fatigue | 82 (10.7) | 55 (24.9) | 27 (5.0) | 6.3 (3.9–10.5) | <0.001 |
| No symptoms | 490 (64.2) | 93 (42.1) | 397 (73.2) | 0.3 (0.2–0.4) | <0.001 |
Data shown as frequency, n/N (%) or mean (±SD)
BMI = body mass index; CI = confidence interval; OR = odds ratio
a Essential workers defined as those working with food supply or hospital services such as cleaning and hospitality
b Any comorbidity includes diabetes, hypertension, cardiac, lung, rheumatic diseases, cancer and thromboembolic events