Table 3.

Weighted multivariate logistic analysis systemic immune-inflammation index and rheumatoid arthritis

	Crude model		Model 1		Model 2		Model 3
	OR 95% CI	P-value	OR 95% CI	P-value	OR 95% CI	P-value	OR 95% CI	P-value
SII	1.296 (1.166, 1.441)	<0.001	1.291 (1.164, 1.433)	<0.001	1.192 (1.066, 1.332)	0.002	1.167 (1.025, 1.328)	0.020
Stratified by SII quartiles
Q1	ref		ref		ref		ref
Q2	0.948 (0.818, 1.098)	0.474	1.003 (0.857, 1.173)	0.973	0.980 (0.826, 1.162)	0.811	0.975 (0.806, 1.181)	0.796
Q3	0.933 (0.789, 1.102)	0.411	0.991 (0.832, 1.180)	0.915	0.940 (0.787, 1.124)	0.498	0.906 (0.745, 1.102)	0.320
Q4	1.310 (1.128, 1.521)	<0.001	1.323 (1.127, 1.554)	<0.001	1.200 (1.013, 1.421)	0.035	1.138 (0.933, 1.388)	0.201
P for trend		<0.001		<0.001		0.038		0.254