Table 1.

Characteristics of the study population at baseline.

Variable	Values
Age (years); mean ± SD (range)	44.7 ± 12.6 (22–69)
Female; n (%)	1948 (61.5)
Professional category; n (%) • Physician • Nurse • Auxiliary staff • Other HCWs	1176 (37.1) 1022 (32.2) 490 (15.5) 482 (15.2)
Medical area; n, (%) • Service • Surgery • Clinic	1030 (32.5) 1406 (44.4) 734 (23.1)
Ward; n, (%) • Not COVID • COVID	2435 (76.8) 735 (23.2)