Table 2.

Family Blood Pressure Program risk factor data by pregnancy group

Variablea	Nulliparous (N = 718)	Normotensive pregnancy (N = 3421)	Hypertensive pregnancy (N = 643)	Normotensive vs. nulliparous P value	Hypertensive vs. normotensive P value
History of smokingb	24.7	31.5	29.6	<0.001	0.336
BMIc	27.94	28.50	31.19	–	–
Log BMId	3.33 ± 0.25	3.35± 0.20	3.44± 0.21	0.028	<0.001
Diabetese	21.1	18.0	25.5	0.037	<0.001
Dyslipidemiaf	81.9	77.0	72.0	0.193	0.069
Family history of stroke	23.0	24.7	29.6	0.281	0.004
Family history of CHD	30.2	33.7	38.6	0.041	0.004
Current HTNg	49.3	39.8	57.6	<0.001	<0.001
Family history of HTN	67.8	72.3	79.8	0.018	<0.001

CHD, coronary heart disease; GENOA, Genetic Epidemiology Network of Arteriopathy; HTN, hypertension.

^aAll variables were adjusted for age, network, and race and expressed as percentages, with the exception of BMI, which was expressed as a mean. P values are calculated from a generalized linear regression model using generalized estimating equations to account for sibling relationships.

^bTwo normotensive patients missing smoking history.

^cTwo nulliparous, 11 normotensive, and one hypertensive patient missing BMI data.

^dDue to skewness of distribution, log BMI (mean ± SD) was used for comparison between the groups.

^eTwo nulliparous and five normotensive patients missing diabetes data.

^fGENOA participants only, N = 149, 1303, and 293, respectively.

^gTwo normotensive and two hypertensive patients missing current hypertension status.