Table 4.

Multivariate regression analysis of associations with PIQ score (BP defined continuously)

CharacteristicModel with SBP indexModel with DBP index
Regression Coefficient95% CIRegression Coefficient95% CI
BP indexa−1.16−2.1 to −0.21−1.17−1.8 to −0.55
Male (yes/no)3.80.17 to 7.34.00.49 to 7.6
African American (yes/no)−8.5−13.0 to −4.0−7.8−12.3 to −3.4
Hispanic (yes/no)−0.06−5.0 to 4.80.07−4.8 to 4.9
Maternal education
    <13 years
    13 to 15 years2.9−1.3 to 7.23.2−0.99 to 7.4
    ≥16 years9.04.9 to 13.19.15.1 to 13.2
Age, years−0.61−1.2 to −0.03−0.59−1.2 to −0.02
BMI percentile−0.004−0.07 to 0.06−0.02−0.08 to 0.04
iGFRb1.0−0.03 to 2.00.76−0.26 to 1.8
% of life with CKD−0.24−0.78 to 0.30−0.3−0.83 to 0.23
Low birth weight−4.5−9.0 to 0.06−4.8−9.3 to −0.3
Antihypertensive medication (yes/no)−0.21−4.1 to 3.6−0.5−4.3 to 3.3
Hemoglobin, g/dl−0.32−1.1 to 0.47−0.06−0.85 to 0.73
  • PIQ, performance IQ; SBP, systolic BP; DBP, diastolic BP; BMI, body mass index; iGFR, GFR determined by plasma iohexol disappearance; CKD, chronic kidney disease; CI, confidence interval.

  • a per 0.05 units.

  • b per 10 units.