Table 5. Reference value of baPWV(m/s) according to age and blood pressure.

Age class(years)	Blood pressure class
	Normal	GradeⅠ	GradeⅡ/Ⅲ
baPWV as mean(±2SD)
<40	12.3(9.3–15.3)	14.3(10.7–17.9)	15.4(10.8–20)
40–49	12.7(10.1–15.3)	14.1(6.1–22.1)	15.7(10.5–20.9)
50–59	13.9(10.1–17.7)	16.1(10.9–21.3)	17.1(10.7–23.5)
>60	16.0(10.6–21.4)	18.4(11.8–25.0)	20.3(11.7–28.9)
baPWV as Median(10-90th)
<40	12.2(10.4–14.3)	14.1(11.9–16.3)	15.0(13.2–19.8)
40–49	12.5(10.8–14.6)	13.8(11.7–16.6)	15.2(12.8–19.0)
50–59	13.5(11.8–16.4)	16.0(12.9–19.2)	16.4(13.8–21.6)
>60	15.7(12.8–19.2)	17.8(14.8–22.4)	19.6(15.9–25.2)

baPWV, brachial-ankle pulse wave velocity; SD, standard deviation.