Table 2.

The main clinical data of CKD patients

DataCKD Stage 1: GFR > 90 ml/min (n = 61)CKD Stage 2: GFR 60 to 89 ml/min (n = 15)CKD Stage 3: GFR 30 to 59 ml/min (n = 11)CKD Stage 4: GFR 15 to 29 ml/min and CKD Stage 5: GFR < 5 ml/min (n = 4)Statistical Significance across StagesStatistical Significance Stage 1 versus All Other Stages
Maternal age, years, mean ± SDa30.95 ± 5.5831.26 ± 5.0233.36 ± 4.1228 ± 4.96NSNS
Nulliparous, %b35 (57.37%)9 (60%)9 (81.8)%3 (75%)NSNS
Caucasian race, %b57 (93.44%)12 (80%)10 (90.91%)2 (50%)P = 0.033NS
Educational level > 8th grade, %b40 (65.57%)6 (40%)11 (100%)3 (75%)NSNS
BMI, mean ± SDa24.11 ± 5.1221.53 ± 4.7022.1 ± 2.7520.5 ± 1.47NSNS
Week of referral, median (range)c15 (4 to 38)12 (6 to 26)8 (5 to 20)7 (6 to 28)NSNS
Hypertension, %16 (26.23%)6 (40%)8 (72.7%)1 (25%)P = 0.032P = 0.044
Creatinine, mg/dl, median (range)c0.65 (0.4 to 1.10)0.89 (0.64 to 1.68)1.45 (1.12 to 1.9)2.82 (2 to 3.8)P < 0.0001P < 0.0001
GFR, ml/min, mean ± SD *129.17 ± 36.3875.12 ± 10.648.2 ± 7.823.07 ± 3.07P < 0.0001P < 0.0001
Proteinuria, g/24 h, median (range)c0.10 (0 to 7.8)0.15 (0 to 6.8)0.7 (0 to 4)0.56 (0.3 to 0.65)P = 0.01P = 0.001
Proteinuria ≤ 0.3 g/24 h, %b44 (72.13%)9 (64.28%)4 (33.3%)1 (25%)NSP = 0.032
Proteinuria > 0.3 g ≤ 1 g/24 h, %b11 (18.03%)2 (14.28%)2 (16.6%)3 (75%)P = 0.054NS
Proteinuria > 1 g/ 24 h, %b6 (9.83%)4 (26.66%)5 (45.4%)0P = 0.004P = 0.032
Renal diseasesGN 13; PN 18; APN 5; K stones 6; transplant 2; PKD 6; Diab 2; other 9GN 5; PN: 6; APN 1; Diab 2; other 1GN 2; PN 4; transplant 1; Diab 3; other 1PN 4
  • PN, interstitial nephritis and chronic pyelonephritis; APN, acute pyelonephritis; K stones, kidney stones (recurrent); PKD, polycystic kidney disease; Diab, diabetic nephropathy; other, persistent isolated urinary anomalies.

  • a ANOVA.

  • b χ2 or Fisher test.

  • c Kruskal–Wallis test.