Table 3.

Mean±SE SBP, pulse pressure, and hypertension severity in quartiles of plasma MR-proANP levels

	African Americans					Non-Hispanic whites
	Quartiles of MR-proANP (pmol/L)					Quartiles of MR-proANP (pmol/L)
	I	II	III	IV		I	II	III	IV
	<44	44–62	62–93	>93	P trend	<44	44–63	63–95	>95	P trend
Age- and sex-adjusted
SBP, mm Hg	136.8±1.2	140.5±1.3	142.2±1.2	146.9±1.5	<.0001	131.7±1.1	136.0±1.0	136.1±1.1	136.4±1.3	0.0098
		0.026	0.0007	<.0001			0.002	0.005	0.012
Pulse pressure, mm Hg	56.8±0.9	60.0±1.0	61.4±1.0	65.2±1.2	<.0001	56.8±0.9	60.6±0.8	60.5±0.9	63.4±1.1	0.0002
		0.011	0.0004	<.0001			0.0009	0.003	<.0001
Hypertension severity score	2.31±0.07	2.38±0.07	2.37±0.07	2.84±0.08	<.0001	1.91±0.05	2.05±0.06	2.10±0.07	2.21±0.07	0.016
		0.47	0.57	<.0001			0.11	0.034	0.002
Adjusted for age, sex, conventional risk factors and medication use
SBP, mm Hg	137.3±1.2	140.8±1.2	141.7±1.2	147.8±1.5	<.0001	131.8±1.1	135.7±0.9	136.0±1.2	136.8±1.3	0.013
		0.027	0.006	<.0001			0.003	0.010	0.006
Pulse pressure, mm Hg	57.0±1.0	60.4±0.9	61.3±1.0	66.0±1.2	<.0001	57.0±0.09	60.5±0.08	60.4±1.0	63.2±1.1	0.0006
		0.006	0.001	<.0001			0.002	0.009	<.0001
Hypertension severity score	2.36±0.07	2.42±0.07	2.41±0.07	2.78±0.08	0.0013	1.92±0.05	2.05±0.06	2.11±0.07	2.18±0.07	0.028
		0.51	0.60	0.0002			0.086	0.025	0.005

SBP, systolic blood pressure; MR-proANP, midregional pro-atrial natriuretic peptide.