Interleukin-34 Synovial Fluid Was Associated with Knee Osteoarthritis Severity: A Cross-Sectional Study in Knee Osteoarthritis Patients in Different Radiographic Stages

Table 3

Linear regression for the association between variables and SF IL-34 levels.

Variables	Univariant		Multivariant
	(95% CI)	value	(95% CI)	value
Age	−0.008 (−0.018–0.002)	0.117	−0.010 (−0.023–0.002)	0.112
Sex	−0.050 (−0.256–0.155)	0.631	−0.080 (−0.279–0.119)	0.427
BMI	−0.022 (−0.068–0.024)	0.341	−0.003 (−0.062–0.055)	0.910
Serum IL-34 levels	<0.001 (−0.001–0.001)	0.667	<0.001 (−0.001–0.001)	0.480
KL grade	0.322 (0.212–0.432)	<0.001	0.273 (0.150–0.395)	<0.001
WOMAC scores	0.010 (0.005–0.016)	<0.001	0.005 (0.001–0.011)	0.034

All abbreviations are as in Tables 1 and 2.