Table 2.

Sample characteristics for all women and women with pregnancy-related hypertension in South Carolina, 2004-2006.

	Total Sample		Pregnancy-related hypertension
	%	n	%	p value*
Total	100.0	133,849	5.7
Race
Non-Hispanic White	58.3	77,980	5.8	<.0001
Non-Hispanic Black	32.6	43,671	6.3
Hispanic	9.1	12,198	3.5
Gestational weight gain (GWG)**
Inadequate	28.4	39,146	4.3	<.0001
Adequate	22.8	35,425	3.6
Excessive	48.8	59,278	7.6
Pre-pregnancy BMI
Underweight	4.7	6,251	2.9	<.0001
Normal weight	46.7	62,520	3.9
Overweight	20.7	27,722	5.8
Obese	27.9	37,356	9.2
Parity
None	45.7	61,118	7.3	<.0001
1 or more	54.3	72,731	4.5
Maternal Education
<12 years	24.0	32,152	4.8	<.0001
12 years	26.4	35,131	5.9
>12 years	49.7	66,566	6.1
Smoking during Pregnancy
Yes	14.2	18,994	5.4	0.0214
No	85.8	114,855	5.8
Prenatal Care Started
<13 weeks	73.1	97,903	6.1	<.0001
13 weeks or later	26.9	35,946	4.7
Maternal Age
<20 years	14.4	19,326	5.6	<.0001
20-34 years	75.5	100,993	5.6
34+ years	10.1	13,530	6.7
Marital Status
Yes	55.4	74,121	5.7	0.7458
No	44.6	59,728	5.8

^*p-value was based on chi-square tests of independence.

^**Gestational age was accounted for in the determination of adequacy of gestational weight gain using the 2009 Institute of Medicine’s recommendations.