Relationship between vaginal group B streptococcus colonization in the early stage of pregnancy and preterm birth: a retrospective cohort study

Table 4 Results from multivariable logistic regression analysis of factors associated with preterm birth

	Preterm birth < 34 weeks			Preterm birth < 37 weeks
	Odds ratio	95% CI	p-value	Odds ratio	95% CI	p-value
Nullipara	0.30	(0.07–1.26)	0.298	–	–	–
Diabetes mellitus	8.06	(1.36–47.78)	0.022*	–	–	–
GBS-positive in the early stage of pregnancy	15.17	(3.73–61.74)	< 0.001*	2.42	(1.01–5.91)	0.045*

Variables were included in a logistic regression model, using backward elimination method to evaluate the independent association between variables and preterm birth
CI Confidence interval, BV Bacterial vaginosis, GBS Group B Streptococcus
*Statistically significant

ISSN: 1471-2393