Influence of Sexually Transmitted Infections in Pregnant Adolescents on Preterm Birth and Chorioamnionitis

Table 2

Associations between sexually transmitted infections and preterm birth and chorioamnionitis.

Diagnosed STI	Preterm birth								Any chorioamnionitis
	Yes; ()		No; ()		Unadjusted PR		Adjusted PR		Yes; ()		No; ()		Unadjusted PR		Adjusted PR
	(%)		(%)		(95% CI)		(95% CI)		(%)		(%)		(95% CI)		(95% CI)
Any STI	24	(17.3)	98	(16.3)	1.06	(0.71, 1.57)	1.09	(0.73, 1.62)	24	(21.4)	98	(15.7)	1.38	(0.92, 2.07)	1.33	(0.88, 2.02)
N. gonorrhoeae	1	(0.7)	22	(3.7)	0.23	(0.03, 1.54)	0.23	(0.03, 1.55)	4	(3.6)	19	(3.0)	1.15	(0.46, 2.85)	1.15	(0.47, 2.80)
C. trachomatis	22	(15.8)	75	(12.5)	1.24	(0.83, 1.86)	1.29	(0.86, 1.94)	19	(17.0)	78	(12.5)	1.35	(0.87, 2.11)	1.31	(0.83, 2.07)
T. vaginalis	6	(4.3)	21	(3.5)	1.19	(0.58, 2.45)	1.19	(0.58, 2.43)	9	(8.0)	18	(2.9)	2.30	(1.31, 4.04)	2.19	(1.26, 3.83)

Abbreviation: STI: sexually transmitted infection. Adjusted a priori for age, race, and smoking status.