OR	Odds ratio
CI	Confidence interval
A. baumannii	Acinetobacter baumannii
E. coli	Escherichia coli
S. aureus	Staphylococcus aureus
S. pneumoniae	Streptococcus pneumoniae
P. aeruginosa	Pseudomonas aeruginosa
M. pneumoniae	Mycoplasma pneumoniae
K. pneumoniae	Klebsiella pneumoniae
H. influenzae	Haemophilus influenzae
NLR	Neutrophil-to-lymphocyte ratio
RSV	Respiratory syncytial virus
PLT	Platelet count
PLT/MPV	Platelet-to-mean platelet volume ratio
RDW	Red cell distribution width
L/A	Lactate-to-albumin ratio