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Table 4 Comparison between the estimated approximate BP values and the percentile BP values at the 50th percentile height

From: The compatibility of new blood pressure reference values for Korean children and adolescents with the US reference: the Korean Working Group of Pediatric Hypertension

Variable

Correlation coefficient

P-value for correlation

Paired difference

Mean difference (mmHg)

95% Confidence interval of difference (mmHg)

P-value for difference

SBP 95th P vs. (age × 2) + 99

0.961

<0.001

–0.712

–1.480 to 0.057

0.069

SBP 90th P vs. (age × 2) + 95

0.962

<0.001

–0.558

–1.346 to 0.231

0.162

DBP 95th P vs. (age × 1.5) + 60

0.955

<0.001

–0.269

–0.878 to 0.339

0.379

DBP 90th P vs. (age × 1.5) + 56

0.953

<0.001

0.500

–0.124 to 1.124

0.114

  1. BP, blood pressure; SBP, systolic BP; P, percentile; DBP, diastolic BP