Table 1.

Demography and clinical data.

Sex (male:female)	1:1
Age: mean (range)	57.17 years (18–80)
Smoking habit
non-smoker	55%
smoker	10%
ex-smoker	35%
BMI
underweight  mean ± SD	3% 16.6 ± 0.57
healthy weight  mean ± SD	51% 22.75 ± 1.5
overweight  mean ± SD	46% 29.6 ± 4.1
Manifestation of acute COVID
pneumonia	81%
upper respiratory tract symptoms	16%
gastrointestinal symptoms	1%
Number of symptoms of acute infection†
no symptoms	2.8%
1 symptom	5.5%
2 symptoms	36.7%
3 symptoms	27.5%
4 symptoms	14.7%
5 symptoms	9.1%
6 symptoms	2.7%
7 symptoms	1%
Oxygen therapy
no oxygen therapy	31.2%
nasal cannula/mask	20.2%
NIV	18.3%
intubation/tracheostomy	30.3%
Prone ventilation	0,23
Days of admission stay
no admission	18.3%
< 30 days	36.7%
> 30 days	45%
Severity of acute phase
low	50.5%
moderate	18.9%
severe	30.6%

BMI: body max index, NIV: non invasive ventilation.

^†anosmia, ageusia, cough, rhinitis, fever, myalgia, gastrointestinal symptoms.