Table 2.

Laboratory and clinical characteristics of patients referred to the nephrologist at a tertiary care centera

CharacteristicLate Referralb (n = 30)Early Referralc (n = 105)P Value
aEPO, erythropoietin; PD, peritoneal dialysis.
bLate referral, <4 mo before initiation of dialysis.
cEarly referral, >4 mo before initiation of dialysis.
Predialysis laboratory values
serum albumin (g/dl)2.9 ± 0.73.3 ± 0.630.01
blood urea nitrogen (mg/dl)110 ± 4594 ± 380.08
serum creatinine (mg/dl)9.6 ± 5.77.6 ± 3.60.02
serum sodium (mEq/L)137 ± 5139 ± 50.14
serum potassium (mEq/L)5 ± 1.04.7 ± 0.70.17
serum bicarbonate (mEq/L)19.3 ± 521 ± 50.08
serum calcium (mg/dl)8.2 ± 1.38.7 ± 1.00.04
serum phosphorus (mg/dl)6.6 ± 2.76.1 ± 2.60.37
hematocrit (%)27 ± 929 ± 60.13
predicted GFR (ml/min per 1.73 m2)7 ± 48 ± 40.33
Predicted GFR <5 ml/min per 1.73 m213/30 (43%)18/102 (17%)0.01
Predialysis EPO use5/30 (17%)42/104 (40%)0.016
Permanent vascular access for the first dialysis1/28 (4%)41/86 (48%)0.001
PD as initial dialysis modality2/30 (7%)19/105 (18%)0.13