Table 4.

Combinations of stress and cervicovaginal microbiota states among 74 women with prior spontaneous preterm birth with recurrent spontaneous preterm birth versus subsequent term birth.

	All births (n=74)	Recurrent sPTB* (n=35)	Term birth (n=39)
	n col(%)	n col(%)	n col(%)	p-value^
Exposure†				0.214
Low stress, non-CST IV	34 (45.9)	12 (34.3)	22 (56.4)
Low stress, CST IV	21 (28.4)	13 (37.1)	8 (20.5)
High stress, non-CST IV	11 (14.9)	5 (14.3)	6 (15.4)
High stress, CST IV	8 (10.8)	5 (14.3)	3 (7.7)

^*Spontaneous preterm birth (sPTB)

^{^}Fisher’s exact.

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.