Table 1. Prevalence of normal blood pressure (BP), prehypertension, and hypertension among participants by sex and age.

Groups	Normal BP	Prehypertension	Hypertension
Totala	30.7 (1.1)	35.7 (1.2)	33.6 (1.2)
Men
Overalla	26.1 (0.9)	38.2 (1.2)	35.7 (1.5)
Age, y
18–29	62.5 (2.1)	29.7 (0.7)	7.8 (0.5)
30–39	45.3 (1.5)	38.8 (0.9)	15.9 (0.9)
40–49	26.4 (1.4)	43.4 (1.1)	30.2 (1.2)
50–59	17.5 (1.5)	39.1 (1.6)	43.4 (1.7)
60–69	13.2 (1.4)	33.9 (1.6)	52.9 (2.2)
70–76	17.4 (1.7)	26.3 (1.1)	56.3 (2.5)
Women
Overalla	35.9 (1.3)	31.8 (1.2)	32.3 (1.3)
Age, y
18–29	71.2 (1.9)	24.9 (0.6)	3.9 (0.3)
30–39	58.9 (1.7)	32.1 (1.0)	9.0 (0.7)
40–49	33.9 (1.4)	37.2 (1.0)	28.9 (1.1)
50–59	23.4 (1.1)	33.8 (1.5)	42.8 (1.7)
60–69	16.9 (1.3)	28.0 (1.2)	55.1 (2.1)
70–76	17.3 (1.4)	23.1 (1.1)	59.6 (2.6)

Values are percentages (standard error).

^aAge-standardized prevalence rate.