Table 1.

Baseline data for the Daily and Nocturnal Trials

VariableDaily TrialNocturnal Trial
n3 Sessions per Week (n=120)6 Sessions per Week (n=125)n3 Sessions per Week (n=42)6 Sessions per Week (n=45)
Age (yr)24552.0±14.148.9±13.68754.0±12.951.7±14.4
Male sex24573 (60.8)78 (62.4)8728 (66.7)29 (64.4)
Race24587
 black53 (44)49 (39)11 (26)12 (27)
 white46 (38)43 (34)21 (50)27 (60)
 other/mixed21 (18)33 (26)10 (24)6 (13)
Diabetes24550 (41.7)50 (40.0)8718 (42.9)19 (42.2)
Postdialysis weight (kg)24578.7±20.577.7±20.78783.3±23.887.6±27.0
ESRD vintage (yr)24587
 <120 (17)20 (16)25 (59)20 (44)
 1–215 (12)17 (14)5 (12)8 (18)
 2–542 (35)34 (27)5 (12)8 (18)
 >543 (36)54 (43)7 (17)9 (20)
Residual renal clearance, (Kru + KCr)/2, ml/min24587
 072 (60)90 (72)11 (26)13 (29)
 >0–231 (26)21 (17)16 (38)9 (20)
 >2–414 (12)6 (4.8)6 (14)11 (24)
 >43 (2.5)7 (5.6)9 (21)12 (27)
Taking no phosphorus binders2459 (7.5)7 (5.6)874 (9.5)2 (4.4)
Types of phosphorus bindersa24587
 taking 1 phosphorus binder74 (61.7)81 (64.8)31 (73.8)38 (84.4)
 taking 2 phosphorus binders36 (30.0)33 (26.4)7 (16.7)5 (11.1)
 taking 3 phosphorus binders0 (0)4 (3.2)0 (0)0 (0)
 taking 4 phosphorus binders1 (0.8)0 (0)0 (0)0 (0)
EPBD (g/d)2455.92±4.327.17±5.48874.54±3.173.63±2.39
Predialysis serum phosphorus (mg/dl)2455.64 (1.53)5.91 (1.73)875.77 (1.65)5.82 (1.59)
Predialysis serum calcium (mg/dl)2459.04 (1.00)8.99 (0.89)878.96 (0.79)8.71 (0.80)
Dialysate Ca (mEq/L)2452.49±0.242.53±0.30872.59±0.272.59±0.27
Taking activated vitamin D derivative24594 (78.3)96 (76.8)8718 (42.9)24 (53.3)
Taking chole/ergocalciferol only2452 (1.7)1 (0.8)870 (0)0 (0)
Taking both activated vitamin D derivative and chole/ergocalciferol24517 (14.2)10 (8.0)871 (2.4)2 (4.4)
  • Results are shown as mean ± SD, median and 10th and 90th percentiles range, or frequency (%), as appropriate. For serum phosphorus values see Table 3, and for serum PTH values see Table 8.

  • a Types of phosphorus binders were those containing one of the following as a major ingredient: calcium carbonate, calcium acetate, sevelamer, lanthanum, aluminum carbonate or hydroxide, or magnesium-calcium combination.