![]() ![]() Sensitivity was confirmed to be 100 % with specificity above 94 %. Shaded areas of the chart differentiate abnormal BP status categories: hypotension, normal BP, prehypertension, Stage 1 hypertension, and Stage 2 hypertension. The 1st, 5th, 25th, 50th, 75th, 90th, 95th, and 99th BP percentile curves are depicted in the chart for each corresponding gender and height from 85 to 190 cm, mimicking the ubiquitous CDC “growth charts”. Sensitivity and specificity of the chart cut-offs were confirmed in a sample of 1254 healthy children from a school-based blood pressure screening program. ![]() By slightly underestimating a child’s BP percentile for high BP and slightly overestimating a child’s BP percentile for low BP, these charts guarantee 100 % sensitivity in detecting abnormal BP. We used the 2004 Fourth Report data source and equations to calculate the BP threshold value for each gender and 5 cm height group. Since height accounts for substantially more BP variability than age and is a more direct measure of body size and maturation in children, height-specific BP percentile curves were drawn separately for males and females. The goal was to develop familiar blood pressure (BP) charts representing BP percentile curves similar to CDC growth charts to improve screening of both high and low BP in children.
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