Table 2.

Patient characteristics in different GFR categories (ml/min per 1.73 m2)

Whole Group (n = 240)GFR <60 (n = 31)GFR <90 (n = 74)GFR 90 to 134 (n = 84)GFR ≥ 135 (n = 81)GFR ≥ 150 (n = 41)
Age, years11.65a (6.92 to 15.35)11.51 (4.42)11.70a (7.87 to 16.0)11.70a (6.86 to 15.0)11.40a (6.55 to 14.70)10.61 (4.72)
Age >10 years, %114 (47.5%)16 (51.61%)36 (49%)5 (6%)38 (46.91%)19 (46.34%)
Girls, %107 (44.58%)12 (38.70)30 (41%)11 (13%)35 (43.20%)19 (46.34%)
Renal transplant20 (8.33%)3 (9.67%)13 (17.56%)1 (1.19%)00
Height, cm144.0a (119.0 to 162.0)137.4 (24.43)139.0a (121.5 to 162.0)139.8 (26.54)145.0a (117.0 to 162.0)139.2 (27.35)
Weight, kg41.25a (22.60 to 54.18)30.80a (22.00 to 53.00)35.20a (22.98 to 52.03)41.97 (20.37)41.60a (21.60 to 56.35)40.30 (19.61)
BMI z-score0.3472 (1.22)−0.10 (1.65)0.05a (−0.78 to 0.97)0.49 (1.19)0.49 (1.07)0.44 (1.06)
BMI z-score ≥2.018 (7.5%)2 (6.4%)5 (6.7%)6 (7.14%)3 (3.7%)2 (4.8%)
  • Data are presented as mean (SD). GFR was measured by technetium-99m–diethylene-triamine penta-acetic acid (99mTc DTPA) and presented in ml/min per 1.73 m2. Age >10 years and BMI z-score ≥2.0 are reported to identify adolescents and obese patients, respectively. BMI, body mass index.

  • a Data are presented as median (interquartile range).