Table 4.

Midpoint and 90^th Percentile Blood Pressure Levels for Girls and Boys at the 5th and 95^th Percentiles of Height⁷

Age	Range of Blood Pressure	Girls	Boys
	*< 90th percentile is considered normal	SBP/DBP, mm Hg *the lower numbers correspond to children at the 5th percentile of height *the higher numbers correspond to children at the 95th percentile of height	SBP/DBP, mm Hg *the lower numbers correspond to children at the 5th percentile of height *the higher numbers correspond to children at the 95th percentile of height
1 year old	Midpoint of range	83–90/38–42	80–89/34–39
	90th percentile of range	97–103/52–56	94–1 03/49–54
3 year old	Midpoint of range	86–93/47–51	86–95/44–48
	90th percentile of range	1 00–1 06/61–65	100–109/59–63
5 year old	Midpoint of range	89–96/52–56	90–98/50–55
	90th percentile of range	103–109/66–70	104–112/65–70
10 year old	Midpoint of range	98–105/59–62	97–106/58–63
	90th percentile of range	112–118/73–76	111–119/73–78
15 year old	Midpoint of range	1 07–11 3/64–67	109–117/61–66
	90th percentile of range	**1 20/78–80	**120/76–80

^**Once a child is at least 11 years old, BP ≥ 120/80 mm Hg is regarded as prehypertension.