AUC	Area Under the Receiver Operating Characteristic Curve
BMI	Body Mass Index
CCI	Charlson Comorbidity Index
CI	Confidence Interval
CIRFs	Clinically Insignificant Residual Fragments
CROES	Clinical Research Office of the Endourological Society nephrolithometry score
EAU	European Association of Urology
HU	Hounsfield Unit
IPA	Infundibulopelvic Angle
NCCT	Non-Contrast Computed Tomography
OR	Odds Ratio
PCNL	Percutaneous Nephrolithotomy
RIL	Renal Infundibular Length
RIRS	Retrograde Intrarenal Surgery
R.I.R.S.	R.I.R.S. score
ROC	Receiver Operating Characteristic
RPRV	Renal Parenchyma-to-Renal Volume Ratio
RUSS	Resorlu–Unsal Stone Score
S-ReSC	Seoul National University Renal Stone Complexity
SD	Standard Deviation
STONE	Stone size, Tract length, Obstruction, Number of involved calyces, and Essence (stone density) score
TOHO	T.O.H.O. score
USSSF	Uncomplicated Single-Session Stone-Free Status