Table 3

Comparison between the main characteristics of the positive COVID-19 group and the negative COVID-19 group


COVID-19+Covid-19−P value
(n=90)(n=145)
Hospital, n (%)
 Latisana2 (2)15 (10)
 Trieste64 (71.1)114 (79)
 Verona24 (27)16 (11)
 Gender (male)47 (52)69 (48)0.367
 Age, median (IQR)67 (54–81)73 (52–83)0.849
Comorbidity, n (%)
 Smoker5 (6)10 (7)0.893
 Arterial hypertension31 (34)58 (40)0.475
 Diabetes mellitus15 (17)26 (18)0.943
 Chronic obstructive pulmonary disease (COPD)7 (8)16 (11)0.555
 Congestive heart failure24 (27)49 (34)0.316
 Neoplasm9 (10)19 (13)0.633
 Pneumopathy (other from COPD)7 (8)20 (14)0.222
 Liver failure2 (2)3 (2)1.000
 Renal failure5 (6)12 (8)0.601
 Neurological disease10 (11)13 (9)0.755
Clinical signs, n (%)
 Fever67 (74)81 (56)0.008*
 Cough50 (56)67 (46%0.227
 Dyspnoea51 (57)80 (55)0.975
ABG
 PaO2 (mm Hg) (IQR)65.6 (55.9–78.2)75.1 (66.0–87.8)<0.001*
 PaCO2 (mm Hg) (IQR)35.3 (31.4–39.7)36.6 (33.0–41.3)0.115
 FiO2 (%) (IQR)21.0 (21.0–21.0)21.0 (21.0–21.0)0.101
 PaO2/FiO2 (mm Hg) (IQR)290 (219–343)332 (294–400)<0.001*
 Ox. suppl.18 (20)15 (10)0.180
 Lactate (mg/dL) (IQR)9.0 (8.0–14.0)10.0 (7.0–17.0)0.306
 6 min walking test (positive)15 (17)7 (5)0.039*
  • The asterisk (*) indicates the statistically significant differences.

  • ABG, arterial blood gas; Ox. suppl., oxygen supplementation.