TABLE 1.

Demographics and Descriptive Statistics for Self-Reported Hypertension

	MZ(n = 4301)	DZ (n = 3414)
Age, mean ± SD	41.12 ± 3.12	41.09 ± 2.77
Education, mean ± SD, y	13.95 ± 2.04	13.75 ± 2.05
Race, n (%)
Caucasian	4061 (94.49)	3226 (94.55)
African	217 (5.05)	177 (5.19)
Hispanic	2 (0.05)	2 (0.06)
Other	18 (0.42)	7 (0.21)
Married, n (%)	3829 (89.69)	3078 (90.64)
Hypertension, n (%)
None	3476 (80.82)	2785 (81.58)
Yes	575 (13.37)	432 (12.65)
Medicated	250 (5.81)	197 (5.77)

MZ = monozygotic; DZ = dizygotic; SD = standard deviation.