TABLE B1.

Regression Coefficients From Blood Pressure Regression Models

Variable NameSymbolSystolic BPDiastolic BP5
MaleFemaleMaleFemale
Interceptα102.19768102.0102761.0121760.50510
Age
    Age-10β11.824161.943970.683141.01301
    (Age-10)2β20.127760.00598−0.098350.01157
    (Age-10)3β30.00249−0.007890.017110.00424
    (Age-10)4β4−0.00135−0.000590.00045−0.00137
Normalized height
    Zhtγ12.731572.035261.469931.16641
    Zht2γ2−0.196180.02534−0.078490.12795
    Zht3γ3−0.04659−0.01884−0.03144−0.03869
    Zht4γ40.009470.001210.00967−0.00079
Standard deviationσ10.712810.485511.603210.9573
ρ*0.41000.38240.24360.2598
n (persons)32 16131 06624 05723 443
n (visits)42 07441 01729 18228 794
  • The coefficients were obtained from mixed-effects linear regression models. Diastolic BP5 indicates diastolic measurement at Korotkoff 5.

  • * The value of ρ represents the correlation between BP measurements at different ages for the same child after correcting for age and Zht. This computation was necessary because some studies contributing to the childhood BP database provided BP at more than 1 age.