Table 3.

- Results of multivariate logistic analysis of variables for predicting EONS in preterm infants.^*

Characteristic	Adjusted OR (95% CI)	β Coefficient	P-value
Apgar score at 5 minutes	0.038 (0.005, 0.302)	-3.270	0.002
CRP level	4.039 (1.251, 13.033)	1.396	0.020
PCT level	30.244 (3.349, 273.116)	3.409	0.002
IL-6 level	1.034 (1.005, 1.064)	0.034	0.021
Intercept		24.280	0.013

^*All variables identified by univariate logistic analysis (p<0.10) were tested using the backward exclusion method. In the multivariable model, the covariate with a p>0.05 was gradually removed separately from the covariate with the highest P-value. To identify other remaining potential confounders, if the effect value of any other predictor changed by 10%, all deleted variables were added separately to the multivariate model and were retained in the model. OR: odd ratio, CI: confidence interval EONS: early-onset neonatal sepsis, PLT: platelet, CRP: C-reactive protein, PCT: procalcitonin, IL-6: interleukin-6