Table 2.

Descriptive statistics of the 97 healthy controls compared with 101 CKiD cIMT substudy participants

CharacteristicHealthy Controls
(n=97)cIMT Substudy Cohort
(n=101)P Valuea
Age (yr)10.1 (7.9–13.7)12.4 (8.5–15.3)0.08
Male sex53 (55)71 (70)0.02
White race71 (73)80 (79)0.30
Weight (kg)34.6 (25.7–50.0)42.9 (26.4–57.8)0.20
Height (m)1.41 (1.27–1.59)1.48 (1.24–1.63)0.50
BMI (kg/m2)17.3 (16.1–20.2)18.9 (16.2–22.7)0.10
Overweight/obese (BMI ≥85th percentile)7 (7)26 (26)0.001
Systolic BP (mmHg)104 (98–113)109 (102–114)0.01
Diastolic BP (mmHg)59 (55–64)64 (58, 69)<0.001
Systolic BP indexb0.87 (0.82–0.91)0.90 (0.84–0.94)0.01
Diastolic BP indexb0.76 (0.7–0.81)0.80 (0.74–0.87)0.001
  • Data are median (interquartile range) or n (%). CKiD, Chronic Kidney Disease in Children study; cIMT, carotid intima-media thickness; BMI, body mass index.

  • a P value from Wilcoxon rank sum test when medians were compared, and P value from Pearson χ2 when percentages were compared.

  • b Measured systolic or diastolic BP/95th age-, sex-, and height-specific percentile BP; a value ≥1 is elevated.