BMI	body mass index
ASA	American society of anesthesiologists
COPD	chronic obstructive pulmonary disease
PD	Parkinson’s disease
BMD	bone mineral density
OP	osteoporosis
eGFR	estimated glomerular filtration rate
Hb	hemoglobin
DXA	dual-energy X-ray absorptiometry
ROC	receiver operating characteristic curve
AUC	area under the ROC curve
IQR	interquartile range
SD	standard deviation
OR	odd ratio
HR	hazard ratio