TABLE 2.

Association of measures of infection with stillbirth and early preterm birth^a

Birth outcome groups	Clinical chorioamnionitis	Histologic chorioamnionitis	PCR+	TRC
Stillbirth OR [95% CI]	2.8 [0.7–10.7]	2.0 [0.9–4.2]	7.0 [3.6–13.9]	1.5 [1.3–1.8]
P value	0.12	0.076	<0.001	<0.001
Stillbirth aOR [95% CI]	3.2 [0.7–14.8]b	1.3 [0.5–3.3]c	7.0 [3.3–15.2]b	1.6 [1.3–2.0]b
P value	0.13	0.58	<0.001	<0.001
Early PTB OR [95% CI]	4.7 [1.2–23.0]	10.3 [4.6–23.8]	2.6 [1.3–5.2]	1.3 [1.1–1.5]
P value	0.03	<0.001	0.005	0.002
Early PTB aOR [95% CI]	3.8 [1.0–18.7]d	9.5 [4.2–22.5]d	2.5 [1.2–5.1]e	1.3 [1.1–1.5]d
P value	0.067	<0.001	0.01	0.006

^aOR, odds ratio; CI, confidence interval; aOR, adjusted odds ratio; early PTB, preterm birth <32 weeks of gestation (live birth and stillbirth); TRC, total ASV read counts (log-transformed). P values <0.05 are boldfaced.

^baOR adjusted for maternal age, race, BMI, parity, multifetal gestation, and gestational age.

^caOR adjusted for maternal age, race, BMI, parity, and gestational age.

^daOR adjusted for maternal age and parity.

^eaOR adjusted for maternal age, race, parity, and multifetal gestation.