Systemic immune-inflammation index and postoperative anxiety after transforaminal endoscopic lumbar discectomy

Table 3 Univariate and multivariate logistic regression analysis of risk factors for postoperative anxiety

Variable	Univariate OR (95%CI)	P value	Multivariate OR (95%CI)	P value
Duration of symptoms	1.058 (1.004-1.114)	0.034	-	-
Preop VAS-leg pain	1.248 (1.042-1.495)	0.016	-	-
Preop ODI	1.034 (1.009-1.060)	0.009	1.028 (0.998-1.059)	0.068
Postop SII	1.004 (1.002-1.006)	< 0.001	1.003 (1.001-1.005)	0.008
Postop TNF-α	1.098 (1.052-1.146)	< 0.001	-	-
Postop IL-6	1.106 (1.056-1.159)	< 0.001	1.087 (1.021-1.158)	0.009
Postop CRP	1.069 (1.041-1.098)	< 0.001	1.045 (1.012-1.079)	0.007
Postop PCT	1.084 (1.012-1.162)	0.022	-	-
Preop RF	1.048 (1.004-1.094)	0.033	-	-

ODI: Oswestry Disability Index; VAS: Visual Analog Scale; SII: Systemic immune-inflammation index; TNF-α: Tumor necrosis factor alpha; IL-6: Interleukin-6; PCT: Procalcitonin; CRP: C-reactive protein; RF: Rheumatoid factor; OR: Odds ratio; CI: Confidence interval.