Table 1.

Patient characteristicsa

All Subjectsn = 422SGA (BW-sds < 0)n = 215AGA (BW-sds ≥ 0)n = 207P Value(t test)
Age, yr19.3 (0.2)19.3 (0.2)19.3 (0.2)0.323
Males, number (%)197 (46.7%)91 (42.3%)106 (51.2%)0.068 (χ2)
BW, g1317 (338)1144 (259)1496 (317)<0.001
GA, wk29.7 (1.5)30.0 (1.4)29.4 (1.6)<0.001
BW-sds−0.11 (1.0)−0.87 (0.78)0.68 (0.49)<0.001
BMI*21.74 (3.4)22.01 (3.4)21.94 (3.3)0.113
Serum creatinine, μmol/Lb81.8 (10.2)81.9 (9.8)81.7 (10.6)0.862
CG GFR, ml/min per 1.73 m2b107.0 (15.8)105.1 (16.0)108.9 (15.4)0.018
MDRD GFR, ml/min per 1.73 m2b98.0 (14.7)96.6 (13.6)99.4 (15.8)0.064
Serum urea, mmol/Lb4.6 (1.1)4.6 (1.1)4.6 (1.2)0.739
Serum sodium, mmol/Lb143 (3)143 (3)143 (3)0.681
Serum potassium, mmol/Lb4.5 (0.4)4.5 (0.4)4.5 (0.5)0.919
log ACR, log(mg/mmol)b−0.69 (0.40)−0.74 (0.36)−0.64 (0.44)0.015
Geometric ACR, mg/mmol0.20 (2.52)0.18 (2.27)0.23 (2.77)
  • SGA, small for gestational age; AGA, appropriate for gestational age; BW, birth weight; GA, gestational age; BW-sds, birth weight adjusted for gestational age expressed by standard deviation scores; CG GFR, Cockroft-Gault GFR; MDRD GFR, simplified MDRD GFR; ACR, albumin-creatinine ratio (log ACR values and the geometric values of these log transformations are shown).

  • a Data expressed by mean ± standard deviation, except when noted differently. P-values based on t test, comparing AGA and SGA subjects. In the distribution of males and females χ2 test was used.

  • b Number of subjects ranges between 368 and 414.