Table 1 Baseline characteristics of study participants.

From: Seroprevalence of antibodies against SARS-CoV-2 among health care workers in a large Spanish reference hospital

  Total
SexaMale161 (28%)
Female417 (72%)
Professional categoryaNurse/Auxiliary nurse/Stretcher-bearer288 (50%)
Physician147 (25%)
Lab technologist/other tech.45 (8%)
Administrative officers, Otherb98 (17%)
Agec 42,1 (11.6)
Daily contact with patientsaNo123 (21%)
Yes455 (79%)
Working in a COVID-19 unitaNo315 (54%)
Yes263 (46%)
Close contact with confirmed COVID19 or suspected caseaNo137 (24%)
Yes441 (76%)
Previously diagnosed with COVID-19 by rRT-PCRaNo539 (93%)
Yes39 (7%)
Comorbiditiesa,dNo517 (89%)
Yes61 (11%)
Household sizec 2.8 (1.2)
Received Flu vaccine (2019–2020 season)aNo339 (59%)
Yes239 (41%)
Reporting COVID-19 compatible symptoms within previous monthsaNo368 (64%)
Yes210 (36%)
  1. an (Column percentage).
  2. bIncludes, cleaning, kitchen and maintenance staff.
  3. cArithmetic Mean (SD) [n].
  4. dComorbidities include: heart and liver disease, diabetes, chronic respiratory and renal disease, cancers and autoimmune, and other immunological disorders.