Table 1 Demographics of patients

Age, median (range), years

0.6 (2 days–15 years)

6 (1 month–20 years)

Gender, n (%)

 Male

660 (62.1)

4735 (56.2)

 Female

374 (37.9)

3691 (43.8)

Identifier pathogens, n (%)

 Viral

721 (69.7)

N/A

 Bacterial

625 (60.4)

N/A

 Fugus

108 (10.4)

N/A

 Viral + Bacteria

425 (41.1)

N/A

 Viral + Fugus

77 (7.4)

N/A

 Bacteria + fugus

83 (8.0)

N/A

 Viral + Bacteria + Fugus

56 (5.4)

N/A

Comorbid conditions, n (%)

978 (94.6)

N/A

Mechanical ventilation

776 (75.0)

N/A

Diagnosis as primary severe pneumonia

719 (69.5)

N/A

Diagnosis as secondary severe pneumonia

315 (30.5)

N/A