Table 2.

Multivariable Linear Regression Analysis on 5-Year AOFAS ^a

	Correlation Coefficient (95% CI)	P
Age at baseline	-0.044 (-0.125 to 0.038)	.293
BMI at baseline	-0.222 (-0.363 to -0.082)	.002
Mean BMI change from baseline	-1.15 (-1.32 to -0.98)	<.001
Lesion size	0.010 (-0.006 to 0.026)	.212
Number of PRP injections	3.12 (2.36 to 3.89)	<.001

^a Boldface P values indicate significant association with 5-year AOFAS score (P < .05). AOFAS, American Orthopaedic Foot and Ankle Society ankle-hindfoot scale; BMI, body mass index, PRP, platelet-rich plasma.