Table 4.

Multivariable linear regression analysis of 5-year AOFAS

	Correlation coefficient (95% CI)	P-value
Age at baseline	−0.06 (−0.36 to 0.25)	0.79
BMI at baseline	−0.14 (−0.44 to 0.17)	0.36
Mean BMI change from baseline	−1.23 (−1.57 to −0.89)	< 0.001
Duration of symptoms before surgery, months	0.42 (0.14–0.70)	0.01
Larsen grade before surgery	0.28 (0.06–0.49)	0.034
Number of PRP injections	2.09 (1.47–2.71)	< 0.001

Boldface P-values indicate significant association with 5-year AOFAS score (P < 0.05)