Table 3.

Associations of stress and cervicovaginal microbiota with adjusted odds of recurrent spontaneous preterm birth.

	Model 1a	Model 1b	Model 2	Model 3
Exposure*	aOR (95% CI)	aOR (95% CI)	aOR (95% CI)	aOR (95% CI)
High stress	1.67 (0.73–3.85)	1.73 (0.57– 5.26)		2.02 (0.61–6.71)
Low stress	ref	ref		ref
CST IV			3.58 (1.25–10.24)	3.83 (1.30–11.33)
Non-CST IV			ref	ref

^*High stress defined as PSS-14 ≥30, low stress defined as PSS-14 <30; community state type IV (CST IV) is a non-optimal cervicovaginal microbiota with a relative deficiency in Lactobacillus.

All models are adjusted for black race and marital status.

Model 1a includes stress but not CST (n=181), 1b is model 1a restricted to women with CST available (n=74).

Model 2 includes CST but not stress (n=74).

Model 3 includes both stress and CST (n=74).