Table 4.

Crude and adjusted odd ratios for the outcome of seropositive tests.

	Crude OR (95% CI)	p-value	Adjusted*OR (95% CI)	p-value
Health worker positions
Physicians	1.85 (1.2–2.9)	0.008	1.70 (1.1–2.7)	0.024
Nurses	2.33 (1.6–3.5)	<0.001	2.10 (1.4–3.2)	<0.001
Assistant nurses	2.58 (1.6–4.3)	<0.001	2.29 (1.4–3.8)	0.001
Janitor/building	Ref.	—	Ref.	—
superintendents
Hospital	2.15 (1.3–3.6)	0.003	2.17 (1.3–3.6)	0.003
technicians
Administration	1.56 (0.9–2.5)	0.077	1.57 (0.9–2.6)	0.074
staff
Hospital department
COVID−19	2.65 (1.7–4.2)	<0.001	2.48 (1.6–3.9)	<0.001
patient ward
ICU, or surgery	Ref.	—	Ref.	—
ward
Other wards	1.18 (0.8–1.8)	0.436	1.22 (0.8–1.9)	0.353
Hospital type
Public	Ref.	—	Ref.	—
Private	1.94 (1.4–2.7)	<0.001	1.61 (1.1–2.3)	0.007

^*Adjusted for PPE usage and contact with patients with COVID-19 as well as other variables in the table.