OA	Osteoarthritis
GBD	Global Burden of Disease
KOA	Knee osteoarthritis
WOMAC	Western Ontario and McMaster Universities Osteoarthritis Index
SF-36	36-Item Short Form Health Survey
ICC	Intraclass Correlation Coefficient
I-CVI	Item-level Content Validity Index
S-CVI/Ave	Scale-level Content Validity Index (average method)
CFA	Confirmatory Factor Analysis
CFI	Comparative Fit Index
TLI	Tucker–Lewis Index
RMSEA	Root Mean Square Error of Approximation
SRMR	Standardized Root Mean Square Residual
BMI	Body Mass Index
IQR	Interquartile Range
CI	Confidence Interval