Table 2.

Relative risks (RR) and 95% confidence intervals (CI) for adult hypertension, metabolic syndrome (MetS), and left ventricular hypertrophy (LVH) according to childhood blood pressure categories by the 2004 or 2017 definitions

Health Outcome	2004 NIH/NHLBI guidelines			2017 American Academy of Pediatrics guidelines
	RR	95% CI	P Value	RR	95% CI	P Value
Childhood prehypertension or elevated blood pressure
Adult hypertension	1.49	1.34-1.65	<0.001	1.45	1.30-1.61	<0.001
Adult MetS	1.29	1.12-1.50	0.0004	1.25	1.07-1.45	0.0049
Adult LVH	1.30	1.05-1.60	0.0151	1.31	1.05-1.63	0.0155
Childhood hypertension
Adult hypertension	1.71	1.48-1.98	<0.001	1.66	1.47-1.87	<0.001
Adult MetS	1.30	1.04-1.62	0.0188	1.36	1.14-1.62	0.0007
Adult LVH	1.52	1.18-1.94	0.001	1.59	1.27-1.99	<0.001

NIH/NHLBI, National Institutes of Health’s National Heart, Lung, and Blood Institute.

All analyses were adjusted for race, sex, age, childhood body mass index, and length of follow-up.