TABLE 1.

Characteristics (mean ± SD or %) of Study Variables by Race and Sex

	Whites		Blacks		p Value for Race Difference
Characteristic	Males (n = 317)	Females (n = 400)	Males (n = 135)	Females (n = 209)	Males	Females
Childhood (First exam)
Age, yrs	9.8 (3.1)	9.7 (3.1)	10.1 (2.8)	9.4 (2.8)*	0.342	0.270
BMI	17.5 (3.3)	17.5 (3.2)	17.6 (3.7)	17.4 (3.5)	0.787	0.712
SBP, mm Hg	100.1 (9.9)	99.3 (9.1)	100.2(10.9)	98.1(10.1)	0.646	0.243
DBP, mm Hg	61.0 (8.2)	61.9 (8.4)	63.0 (8.3)	60.7 (8.7)	0.036	0.199
Adulthood (Last exam)
Age, yrs	37.8 (4.5)	37.6 (4.5)	38.4 (4.3)	37.1 (4.8)**	0.165	0.130
BMI	28.9 (5.3)	28.0 (6.8)	29.4 (7.4)	31.5 (8.4)*	0.398	<0.001
SBP, mm Hg	118.0 (11.6)	110.3 (11.9)**	128.3 (18.1)	121.1 (19.2)**	<0.001	<0.001
DBP, mm Hg	79.5 (8.2)	74.6 (8.8)**	85.2 (13.2)	80.5 (12.4)*	<0.001	<0.001
AUC measures
Average age, yrs	21.8 (3.8)	21.8 (3.8)	21.9 (3.6)	21.1 (3.5)*	0.823	0.027
Total AUC of BMI	24.5 (4.1)	23.5 (4.5)**	24.6 (5.1)	25.6 (5.6)	0.872	<0.001
Total AUC of SBP	112.9 (7.2)	107.1 (6.2)**	116.5 (8.9)	111.0 (8.2)**	<0.001	<0.001
Total AUC of DBP	72.1 (5.5)	69.8 (4.6)**	74.2 (7.1)	71.6 (6.1)**	<0.001	<0.001
Incremental AUC of BMI	7.0 (2.6)	6.1 (3.5)**	7.0 (3.2)	8.1 (3.8)*	0.937	<0.001
Incremental AUC of SBP	13.0 (5.4)	7.9 (5.8)**	16.7 (7.2)	13.1 (6.9)**	<0.001	<0.001
Incremental AUC of DBP	11.4 (3.3)	8.6 (4.1)**	12.4 (4.3)	10.8 (4.7)**	0.011	<0.001
Adulthood(Last exam)
LV mass, g	175.4 (50.3)	129.8 (39.3)**	186.9 (62.8)	145.5 (48.7)**	0.062	<0.001
LVMI, g/m2.7	37.3 (10.3)	34.5 (10.5)*	40.7 (13.9)	38.7 (12.6)	0.007	<0.001
RWT, cm	0.35 (0.08)	0.34 (0.06)	0.35 (0.07)	0.35 (0.07)	0.839	0.036

Sex difference within racial groups:

^*p<0.05;

^**p<0.01

AUC = area under the curve; BMI = body mass index; DBP = diastolic blood pressure; LVMI = left ventricular mass index; RWT = relative wall thickness; SBP = systolic blood pressure