Predictive value of the neutrophil-to-lymphocyte ratio for epidural labor analgesia-associated intrapartum fever: a retrospective single-center study

Table 2 Multivariate logistic regression analysis of factors associated with intrapartum fever during epidural labor analgesia

Variables in the equation		P	Exp(B)	95%CI of Exp(B)
Variables in the equation		P	Exp(B)	Lower limit	Upper limit
Steps 1a	NLR	<0.001	1.342	1.212	1.487
Steps 1a	Constant quantity	<0.001	0.090
Steps 2b	First-stage labor	0.001	1.002	1.001	1.003
	NLR	<0.001	1.340	1.210	1.483
	Constant quantity	<0.001	0.024
Steps 3c	First-stage labor	<0.001	1.002	1.001	1.003
	LYM %	0.004	1.171	1.051	1.305
	NLR	<0.001	1.832	1.399	2.400
	Constant quantity	<0.001	<0.001
Steps 4d	BMI	0.012	1.132	1.027	1.246
	First-stage labor	0.001	1.002	1.001	1.003
	LYM %	0.002	1.205	1.073	1.354
	NLR	<0.001	1.964	1.462	2.639
	Constant quantity	<0.001	<0.001

Variables included in step 1: NLR. b. Variables entered in step 2: Duration of the first stage of labor. c. Variables entered in step 3: Percentage of lymphocytes. d. Variables entered in step 4: BMI. CI, confidence interval; Abbreviations: NLR, Neutrophil-to-lymphocyte ratio; LYM %, lymphocyte percentage; BMI, body mass index

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