TABLE 1

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Age ≥18 years New infiltrate on chest radiography (confirmed by radiologist) At least one of the following symptoms of lower respiratory tract infection Cough Purulent expectoration Fever ≥38.3 °C (rectal) or ≥37.8 °C (ear) Pathological lung auscultation	Hospital admission within the last 28 days prior to admission due to pneumonia Active tuberculosis Missing information on prior medical history Immunosuppression, defined as Treatment with corticosteroids (≥20 mg prednisolone-equivalent/day >14 days) HIV infection Received cancer chemotherapy within the last 28 days and had neutropenia (neutrophil granulocytes <1000 µL⁻¹) Immunosuppression after organ or bone marrow transplantation

Inclusion criteria

Exclusion criteria

Age ≥18 years
New infiltrate on chest radiography (confirmed by radiologist)
At least one of the following symptoms of lower respiratory tract infection
Cough
Purulent expectoration
Fever ≥38.3 °C (rectal) or ≥37.8 °C (ear)
Pathological lung auscultation

Hospital admission within the last 28 days prior to admission due to pneumonia
Active tuberculosis
Missing information on prior medical history
Immunosuppression, defined as
Treatment with corticosteroids (≥20 mg prednisolone-equivalent/day >14 days)
HIV infection
Received cancer chemotherapy within the last 28 days and had neutropenia (neutrophil granulocytes <1000 µL⁻¹)
Immunosuppression after organ or bone marrow transplantation