Table 2:

Blood pressure parameters by study arm over time

Vital Sign Parameter	Control*	SNOO	p value†
	n = 56	n = 54
At initial prenatal visit	n = 54	n = 54
Mean arterial pressure	90±8	87±7	0.05
Systolic blood pressure	119±9	115±10	0.09
Diastolic blood pressure	76±9	73±8	0.08
On admission to Labor and Delivery	n = 56	n = 54
Mean arterial pressure	102±9	103±12	0.68
Systolic blood pressure	135±12	140±13	0.12
Diastolic blood pressure	86±10	86±13	0.78
Enrollment	n = 56	n = 54
Mean arterial pressure	102±11	102±8	0.78
Systolic blood pressure	134±14	135±12	0.77
Diastolic blood pressure	86±10	85±8	0.50
On antihypertensive medication(s) at enrollment‡	3 (5%)	4 (7%)	0.71
On antihypertensive medication(s) at postpartum discharge‡	11 (20%)	9 (17%)	0.69
1 week postpartum	n = 49	n = 53
Mean arterial pressure	103±7	99±10	0.04
Systolic blood pressure	130±10	131±14	0.89
Diastolic blood pressure	89±8	83±11	0.003
On antihypertensive medication(s)‡	19 (35%)	12 (23%)	0.15
Stage 1+ HTN or on antihypertensive medication(s)‡	44 (85%)	43 (85%)	0.84
6 weeks postpartum	n = 51	n = 53
Mean arterial pressure (primary outcome)	94±8	93±8	0.54
Systolic blood pressure	122±11	121±10	0.55
Diastolic blood pressure	80±8	79±8	0.62
On antihypertensive medication(s)‡	13 (26%)	8 (15%)	0.19
Stage 1+ HTN or on antihypertensive medication(s)‡	32 (63%)	31 (58%)	0.66
4 months postpartum	n = 31	n = 45
Mean arterial pressure	94±8	93±9	0.56
Systolic blood pressure	122±12	121±10	0.80
Diastolic blood pressure	80±7	78±10	0.48
On antihypertensive medication(s)‡	3 (9%)	3 (6%)	0.62
Stage 1+ HTN or on antihypertensive medication(s)‡	19 (61%)	21 (47%)	0.21

^*Data are reported as mean±SD unless otherwise indicated

^†p values indicate the statistical testing result from two-sample t-tests for normally distributed continuous variables, or Pearson’s chi-squared or Fisher’s exact test for categorical variables

^‡Data are reported as n (%)