Table 1.

Intermediate phenotypes in essential hypertension, based on population ancestry

Phenotype/Trait	Population Ancestry
	African	European
Early onset hypertension	More common	Less common
Severe hypertension	More common	Less common
Salt sensitivity	More common	Common
Plasma renin activity	More commonly suppressed	May be suppressed
Excretion of a sodium load	Delayed	Rapid
Red blood cell intracellular sodium concentration	Elevated	Normal
Renal blood flow	Reduced	Normal
Catecholamine sensitivity	Increased	Normal