Table 2:

Prevalence odds ratios of spontaneous PTB in participants with baseline specimens analyzed

Exposure	Spontaneous PTB <37 weeks
	OR (95% CI)	p-value	AOR (95% CI)	p-value
Vaginal Pro-Inflammatory Factor Score	1.4 (1.0–1.9)	0.05	1.6 (1.1–2.3)	0.02
Vaginal Anti-Inflammatory Factor Score	1.3 (0.9–1.8)	0.07	1.5 (1.0–2.3)	0.03
Plasma Pro-Inflammatory Factor Score	1.4 (0.6–3.0)	0.39	1.3 (0.6–3.1)	0.53
Plasma Anti-Inflammatory Factor Score	1.2 (0.6–2.8)	0.60	1.1 (0.5–2.6)	0.87

OR: odds ratio; AOR: adjusted odds ratio

Multivariable model estimates of adjusted odds ratios are adjusted for HIV serostatus, ART exposure, prior PTB, maternal age, and BMI

Models exclude women with twin pregnancies (n=8) or short cervix (n=6)