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Table 1 Patient’s demographic characteristics and initial COVID-19 severity data

From: Cluster analysis unveils a severe persistent respiratory impairment phenotype 3-months after severe COVID-19

Characteristic  
Number of patients 62
Male 41 (63.1)
Age, years 63.0 ± 12.4
BMI, kg/m2 29.3 ± 5.7
Smoking history  
 Current or ex-smoker 30 (48.4)
 Pack-years 36.3 ± 35.0
Comorbidities  
 Obesity 21 (33.9)
 Diabetes mellitus 15 (24.2)
 Cardiovascular disease 37 (59.7)
 Arterial hypertension 32 (51.6)
 Immunodepression 4 (6.5)
 Respiratory chronic disease  
  COPD 4 (6.5)
  Asthma 8 (12.9)
  Interstitial lung disease 1 (1.6)
 Inhaled corticosteroids 8 (12.9)
Covid-19  
 Total length for hospital stay, days 19.5 [37.0]
 ICU, n 37 (59.7)
  ICU stay length, days 13.0 [13.5]
  High-flow nasal oxygen, n 34 (54.8)
  High-flow nasal oxygen, days 4.5 [6.0]
  Intubation, n 19 (30.6)
  Intubation, days 13.0 [20.0]
 Physical medicine and rehabilitation unit, n 23 (37.1)
 Complications  
  ARDS 18 (29.0)
  Pulmonary embolism 9 (14.5)
  Ventilator-associated pneumonia 9 (14.5)
  Acute cardiac insufficiency 3 (4.8)
  Pneumothorax 2 (3.2)
  1. Data are expressed as numbers (percentages) or median [interquartile range]
  2. BMI: body mass index; COPD: Chronic Obstructive Pulmonary Disease; ICU: Intensive Care Unit; ARDS: Acute Respiratory Distress Syndrome