Table 3

Association between selected symptoms and prevalence of positive tests (anti-SARS-CoV-2 IgG ≥15 AU/mL) among healthcare workers in a large university hospital, Milan, Italy, 27 April 2020 to 12 June 2020

WorkersPositive test
NN%P value*OR†95% CI†
Specific symptom
Cough
 No35232015.7<0.0011.00Reference
 Yes53210820.31.651.18 to 2.30
Fever
 No36811905.2<0.0011.00Reference
 Yes37411931.84.373.11 to 6.13
Sore throat
 No36772617.1<0.0011.00Reference
 Yes3784812.70.570.38 to 0.86
Coryza
 No38822686.9<0.0011.00Reference
 Yes1734123.71.901.21 to 2.98
Headache
 No39202777.1<0.0011.00Reference
 Yes1353223.70.960.58 to 1.61
Myalgias
 No34232166.3<0.0011.00Reference
 Yes6329314.70.770.54 to 1.11
Diarrhoea/nausea/vomit
 No36332547.00.0061.00Reference
 Yes4225513.00.850.58 to 1.24
Asthenia
 No36191995.5<0.0011.00Reference
 Yes43611025.22.671.87 to 3.80
Ocular symptoms
 No38472817.30.0011.00Reference
 Yes2082813.50.780.46 to 1.32
Dyspnoea
 No39272757.0<0.0011.00Reference
 Yes1283426.61.380.82 to 2.32
Taste and smell alterations
 No39152456.3<0.0011.00Reference
 Yes1406445.74.622.99 to 7.15
  • *From χ2 test.

  • †From a multivariable logistic model including all symptoms.