Levofloxacin
Azithromycin
Medicine
Clarithromycin
Interquartile range
Internal medicine
Pneumonia
Univariate analysis
Retrospective cohort study
Antibacterial agent
Confounding
Community-acquired pneumonia
Multivariate analysis
Pneumonia severity index
Legionella
Surgery
Antibiotics
Helicobacter pylori
Microbiology
Biology
Genetics
Bacteria
