Table 3.

Association between VAS change with SF depth and KL grade at 1 and 6 months after treatment^a

VAS (% change) b	Absolute effectc	95% CI	P-value
1 month after injection
SF depth (cm)	9.078	−4.76, 22.81	0.19
KL grade	−3.235	−6.32, −0.39	0.047d
6 months after injection
SF depth (cm)	−15.26	−29.9, −0.56	0.042d
KL grade	−3.84	−7.26, −0.434	0.028d

^aAge, sex and body mass index adjusted in the regression model.

^bPercentage clinical change compared with baseline.

^cAbsolute effects from linear regression models: refers to the change in the associated outcome variable with each further 1 cm SF depth increased and 1 further KL grade increased.

^dStatistically significant intergroup difference. KL: Kellgren–Lawrence; VAS, visual analogue scale.