Table.
Comparison of demographic, exposure and clinical characteristics in the SARS-CoV-2 antibody-positive healthcare workers (HCWs) (n=3739)
| Characteristics | SARS-CoV-2 Ab positive (n=487; 13%), n (%) | OR | 95% CI-Low | 95% CI-High | P | Total number (n=3739), n (%) |
|---|---|---|---|---|---|---|
| Male | 309/2220 (13.9) | 1.218 | 1.000 | 1.484 | 0.050 | 2220 (59.4) |
| Female | 178/1519 (11.7) | - | - | - | - | 1519 (40.6) |
| Age (yr) | ||||||
| 18-35 | 272/2073 (13.1) | 1.008 | 0.860 | 1.183 | 0.917 | 2073 (55.4) |
| >35 | 215/1666 (12.9) | - | - | - | - | 1666 (44.6) |
| On active COVID duty | 110/943 (11.7) | 0.840 | 0.670 | 1.053 | 0.131 | 943 (25.2) |
| Not on active COVID duty | 377/2796 (13.5) | - | - | - | - | 2796 (74.8) |
| Breach in PPE* | 38/300 (12.7) | 0.962 | 0.663 | 1.396 | 0.838 | 300/1773 (16.9) |
| No breach in PPE* | 193/1473 (13.1) | - | - | - | - | 1473/1773 (83.1) |
| Contact with COVID-positive individuals | 196/1260 (15.6) | 1.385 | 1.139 | 1.684 | 0.001 | 1260 (33.7) |
| No contact with COVID-positive individuals | 291/2479 (11.7) | - | - | - | - | 2479 (66.3) |
| HCQS prophylaxis | 99/769 (12.9) | 0.983 | 0.776 | 1.245 | 0.884 | 769 (20.6) |
| No HCQS prophylaxis | 388/2970 (13.1) | - | - | - | - | 2970 (79.4) |
| Presence of a comorbidity | 114/952 (12) | 0.880 | 0.704 | 1.101 | 0.265 | 952 (25.5) |
| No comorbidity | 373/2787 (13.4) | - | - | - | - | 2787 (74.5) |
| Symptomatic | 267/1460 (18.3) | 2.095 | 1.728 | 2.538 | <0.001 | 1460 (39) |
| Asymptomatic | 220/2279 (9.7) | - | - | - | - | 2279 (61) |
*Voluntary disclosure on breach in PPE was given by 1773 HCWs. SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; OR, odds ratio; CI, confidence interval; COVID, coronavirus disease; PPE, personal protective equipment; HCQS, hydroxychloroquine sulphate