Table 1.
Demographic and serology characteristics of health care workers in three hospitals.
| Total n (%) | SARS-CoV-2 antibody IgG negative n (%) | SARS-CoV-2 antibody IgG positive n (%) | p value | SARS-CoV-2 antibody IgG positive n (%) | ||||
|---|---|---|---|---|---|---|---|---|
| All | 1580 (100) | 1289 (81.7) | 289 (18.3) | |||||
| Hospital | Hospital | |||||||
| Non-COVID | 575 (36.3) | 468 (81.7) | 105 (18.3) | <0.001 | Non-COVID | Emergency | COVID | P value |
| Emergency | 645 (40.9) | 564 (87.4) | 81 (12.6) | |||||
| COVID | 360 (22.8) | 257 (71.4) | 103 (28.6) | |||||
| Gender | ||||||||
| Females | 1166 (75.4) | 963 (76.2) | 203 (72.0) | 0.138 | 77 (76.2) | 54 (66.7) | 72 (72.0) | 0.360 |
| Males | 380 (24.6) | 301 (23.8) | 79 (28.0) | 24 (23.8) | 27 (33.3) | 28 (28.0) | ||
| Age, years mean±SD | 43.1 ± 29.9 | 43.4 ± 32.6 | 42.1 ± 11.5 | 0.554 | 43.2 ± 11.0 | 41.2 ± 12.2 | 41.8 ± 12.2 | 0.429 |
| 18–29 | 208 (15.7) | 161 (14.8) | 47 (19.7) | 0.213 | 11 (15.5) | 19 (24.4) | 17 (18.9) | 0.613 |
| 30–39 | 350 (26.4) | 293 (27.0) | 57 (23.8) | 18 (25.4) | 21 (26.9) | 18 (20.0) | ||
| 40–49 | 360 (27.2) | 304 (28.0) | 56 (23.4) | 19 (26.8) | 13 (16.7) | 24 (26.7) | ||
| 50–59 | 334 (25.2) | 268 (24.7) | 66 (27.6) | 20 (28.2) | 19 (24.4) | 27 (30.0) | ||
| 60–65 | 73 (5.5) | 60 (5.5) | 13 (5.4) | 3 (4.2) | 6 (7.7) | 4 (4.4) | ||
| Occupation | ||||||||
| Doctors | 346 (21.9) | 271 (21.0) | 75 (26.0) | 0.185 | 27 (25.7) | 18 (22.2) | 30 (29.1) | 0.445 |
| Nurses | 782 (49.6) | 645 (50.0) | 137 (47.4) | 48 (45.7) | 37 (45.7) | 52 (50.5) | ||
| Other | 456 (28.9) | 373 (28.9) | 77 (26.6) | 30 (28.6) | 26 (32.1) | 21 (20.4) | ||
| Risk | ||||||||
| High risk | 450 (28.5) | 355 (27.5) | 95 (32.9) | 0.180 | 11 (10.5) | 12 (14.8) | 72 (69.9) | < 0.001 |
| Medium risk | 806 (51.0) | 666 (51.6) | 140 (48.4) | 78 (74.3) | 45 (55.6) | 17 (16.5) | ||
| Low risk | 324 (20.5) | 270 (20.9) | 54 (18.7) | 16 (15.2) | 24 (29.6) | 14 (13.6) | ||
| Years of service mean±SD | 17.3 ± 11.6 | 17.4 ± 11.6 | 16.7 ± 11.7 | 0.461 | 17.4 ± 11.9 | 16.8 ± 12.2 | 16.6 ± 11.5 | 0.878 |