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Table 1 Comparison of anthropometry, kidney growth and function between LBW and NBW neonates

From: Are low birth weight neonates at risk for suboptimal renal growth and function during infancy?

Parameters LBW (n =100) NBW /Controls (n = 66)
Weight (kg)
Birth 1.65 ± 0.38 2.96* ± 0.38
6 months 5.76 ± 1.19(n = 66) 7.53* ± 1.54(n = 28)
18-24 months 9.31 ± 1.11(n = 46) 10.7* ± 1.56(n = 19)
BSA (m2)
Birth 0.14 ± 0.02 (100) 0.20* ± 0.02 (64)
6 months 0.31 ± 0.07 (66) 0.38 * ± 0.06 (28)
18-24 months 0.41 ± 0.10 (46) 0.48 * ± 0.08 (17)
Combined renal volume (cm3)
Birth 13.29 ± 3.38 (99) 20.58* ± 4.59 (65)
6 months 30.16 ± 8.19 (66) 40.27* ± 7.97 (32)
18-24 months 45.83 ± 13.26 (45) 69.61* ± 13.12 (19)
Cystatin GFR (ml/m2/min)
Birth 51.63 ± 14.14 (95) 48.48 ± 8.29 (36)
6 months 64.98 ± 14.47 (66) 75.34* ± 12.56 (31)
18-24 months 75.80 ± 18.31 (45) 86.38 ± 15.61 (16)
Urine microalbumin†(mg/l)
6 months 11.3 (4.9, 16.3) 11.2 (5.8, 14.0)
18-24 months 11.8 (5.8, 14.0) 10.1 (5.6, 12.5)
  1. Reported as mean ± SD; † reported as median (25th and 75th percentiles)
  2. *p <0.05, using an independent t test between LBW and NBW neonates