Table 2.

The association between SII and psoriasis.

	Model 1	Model 2	Model 3
	OR(95% CI) P value	OR(95% CI) P value	OR(95% CI) P value
SII/100	1.016 (1.003, 1.029) 0.01702	1.013 (1.000, 1.026) 0.04364	1.009 (0.992, 1.026) 0.32130
SII quartiles
Quartile  1	Reference	Reference	Reference
Quartile  2	1.174 (0.881, 1.565) 0.27441	1.084 (0.812, 1.448) 0.58442	1.035 (0.740, 1.448) 0.84087
Quartile  3	1.315 (0.993, 1.741) 0.05616	1.159 (0.873, 1.539) 0.30870	1.078 (0.777, 1.494) 0.65331
Quartile  4	1.944 (1.497, 2.524)<0.00001	1.645 (1.261, 2.145) 0.00024	1.433 (1.052, 1.952) 0.02263
P for  trend	<0.00001	0.00003	0.00750

Model 1, no covariates were adjusted. Model 2, age, sex, and race were adjusted. Model 3, age, sex, race, education level, smoking status, drinking status, BMI, diabetes, congestive heart failure,coronary artery disease, stroke and cancer were adjusted.

Multivariate logistic regression analysis was used to calculate beta values and 95% confidence intervals.

95% CI, 95% confidence interval; OR, odds ratio; SII, systemic immunity-inflammation index.

p< 0.05 was considered statistically significant.