Table 2.

Baseline characteristics of the 99 individuals of African descent

Characteristics	Women		P	Men		P
	Risk allele carriers	Nonrisk homozygotes		Risk allele carriers	Nonrisk homozygotes
No.	27	32		24	16	.22
Age, y	43.48 ± 2.21	43.97 ± 1.87	.87	42.54 ± 2.30	45.33 ± 2.42	.42
Disease state
Hypertensive (n)	18	24	.57	15	11	.75
Normotensive (n)	9	8		9	5
BMI	29.26 ± 1.00	27.92 ± 0.92	.33	29.20 ± 0.86	28.20 ± 0.90	.42
SBP on LIB diet, mm Hg	140 ± 5	143 ± 4	.63	137 ± 4	138 ± 5	.44
DBP on LIB diet, mm Hg	83 ± 3	83 ± 2	.90	81 ± 2	81 ± 11	.94
Aldosterone on LIB diet, ng/dL	3.70 ± 0.42	4.82 ± 0.62	.04	3.56 ± 0.29	5.63 ± 1.25	.20
PRA on LIB diet, ng/mL/h	0.29 ± 0.06	0.35 ± 0.07	.69	0.31 ± 0.07	0.24 ± 0.05	.96
ARR on LIB diet, ng/dL per ng/mL/h	38.43 ± 11.59	30.50 ± 6.36	.64	21.98 ± 3.81	42.15 ± 17.17	.21
24-h urine sodium excretion on LIB diet, mmol/24 h	215.29 ± 18.20	206.25 ± 15.32	.70	245.78 ± 12.01	208.63 ± 21.93	.90
24-h urine sodium excretion on RES diet, mmol/24 h	19.06 ± 3.83	15.88 ± 1.97	.91	20.93 ± 3.11	18.26 ± 2.61	.99

Data represent mean ± SEM. T test, Wilcoxon rank sum test, or Fisher exact test was used in the analysis.

Abbreviations: ARR, aldosterone-to-renin ratio; BMI, body mass index; DBP, diastolic blood pressure; LIB, liberal salt; PRA, plasma renin activity; RES, restricted salt; SBP, systolic blood pressure.