Table 2.

Preconception blood pressure and fecundability, pregnancy loss and live birth

Variable	Fecundability	Pregnancy loss*	Live birth
	FOR (95% CI)	RR (95% CI)	RR (95% CI)
Systolic blood pressure (10 mmHg)
Unadjusted	0.93 (0.87–0.99)	1.11 (1.01–1.22)	0.95 (0.91–0.99)
Adjusted†	0.99 (0.92–1.06)	1.08 (0.97–1.20)	0.98 (0.93–1.02)
Diastolic blood pressure (10 mmHg)
Unadjusted	0.91 (0.84–0.99)	1.22 (1.08–1.39)	0.91 (0.86–0.96)
Adjusted†	0.99 (0.90–1.08)	1.18 (1.03–1.36)	0.96 (0.90–1.01)
Mean arterial pressure (10 mmHg)
Unadjusted	0.90 (0.83–0.98)	1.21 (1.07–1.37)	0.91 (0.86–0.96)
Adjusted†	0.98 (0.90–1.08)	1.17 (1.02–1.35)	0.96 (0.90–1.02)

^*Weighted by probability of pregnancy (predictors: systolic blood pressure, diastolic blood pressure, study group, age, BMI, race [white vs. non-white], marital status [married, living as married, other], cigarette smoking, parity, study site, number of prior losses and time from last pregnancy loss to enrollment [≤4 months, 5–8 months, 9–12 months, >12 months])

^†Adjusted for treatment assignment, age, BMI, race (white vs. non-white), marital status (married, living as married, other), cigarette smoking, parity and time from last pregnancy loss to enrollment (≤4 months, 5–8 months, 9–12 months, >12 months)