Table 3.

Associations of high stress (PSS ≥ 30) and low CV-βD (below the median of 17,098 pg/mL) with adjusted^* odds of spontaneous preterm birth

	Model 1	Model 2	Model 3
Exposure	aOR (95% CI)	aOR (95% CI)	aOR (95% CI)
PSS ≥ 30	1.62 (0.97–2.70)		1.72 (1.03–2.90)
PSS < 30	ref		ref
CV-βD < median		1.50 (0.96–2.35)	1.58 (1.004– 2.49)
CV-βD ≥ median		ref	ref

Model 1 includes PSS but not CV-βD

Model 2 includes CV-βD but not PSS

Model 3 includes both PSS and CV-βD

^*All models are adjusted for race and smoking