AUC	Area under the curve
BMI	Body mass index
CAR	C-reactive protein-to-albumin ratio
COPD	Chronic obstructive pulmonary disease
CRP	C-reactive protein
NLR	Neutrophil-to-lymphocyte ratio
OPCABG	Off-pump coronary artery bypass grafting
OR	Odds ratio
PNI	Prognostic nutritional index
ROC	Receiver operating characteristic
Δ	Delta