Table 1.

Age-Standardized Baseline Characteristics of NHS Study Participants Categorized by History of Hypertension in 1986

Characteristics	History of Hypertension
	No	Yes
No.	58 480	17 120
Age, ya	50.7 (6.9)	54.0 (6.6)
BMI, kg/m2	24.6 (4.1)	27.6 (5.6)
Physical activity, MET-h/wk	14.8 (21.8)	13.2 (17.9)
Smoking status
Never	45.2	46.5
Past	34.7	36.2
Current	19.2	16.5
Missing	0.9	0.8
Race
White	94.6	92.7
Black	0.9	2.1
Asian	0.6	0.7
Multiple	1.2	1.6
Other/unknown	2.6	2.8
Menopausal status
Premenopausal	37.1	33.1
Postmenopausal	62.7	66.7
Missing	0.2	0.2
Postmenopausal hormone use	17.4	18.3
Antihypertensive medication use
Thiazide diureticb	3.5	36.2
Furosemidec	0.9	3.7
β-Adrenergic antagonistb	3.0	22.7
Calcium channel blockerb	1.1	5.3
ACE inhibitorb	0.5	7.6
Other medication classesb	0.2	5.9
History of kidney stones, in 1992	3.8	5.5
History of osteoporosis	2.3	3.0
History of CHFd	0.8	2.3
History of chronic kidney diseasee	0.1	0.6
History of diabetes	1.6	5.9
Dietary calcium intake, mg/d	720.2 (251.1)	709.9 (248.0)
Supplemental calcium use	56.7	56.0
Supplemental calcium intake, mg/d	351.3 (424.8)	354.0 (429.1)
Alcohol intake, g/d	6.0 (1.0)	6.2 (11.6)
Total vitamin D intake, dietary and supplemental, IU/d	338.4 (250.6)	337.4 (249.3)
Total vitamin A intake, dietary and supplemental, IU/d	13 335.9 (7917.5)	13 222.7 (7778.5)
Dietary magnesium intake, mg/d	300.2 (68.7)	296.2 (67.7)
Dietary protein intake, g/d	74.7 (12.7)	76.0 (13.2)
Dietary animal protein intake, g/d	54.4 (13.6)	55.9 (13.9)

Abbreviation: MET, metabolic equivalent task. Values are means (SD) or percentages and are standardized to the age distribution of the study population. Values of polytomous variables may not sum to 100% due to rounding.

^aValue is not age adjusted.

^bAssessed in 1988.

^cAssessed in 1994.

^dAssessed in 1998.

^eAssessed in 1990 and 2002.