Comparison of China Reference with Different National and International References: The Prevalence of High Blood Pressure in 695,302 Children and Adolescents in a Metropolis of Yangtze River Delta, China

Table 2

Prevalence of high blood pressure (%) in the study population based on the 4 reference systems stratified by socioeconomic status or gender.

	Socioeconomic status			Gender
	Low	High	value	Males	Females	value
U.S.	24.5	27.7	<0.001	27.1	24.7	<0.001
International	19.6	20.4	<0.001	21.8	17.9	<0.001
Europe	18.5	20.6	<0.001	20.1	18.8	<0.001
China	18.2	20.3	<0.001	18.8	19.7	<0.001

value represents differences among categories.