Table 2.

Changes in indices of metabolic bone disease control, nutritional status, and body composition in the year after a change in prescribed dietary phosphate

Change over 1 Year after Conversion to More Restrictive PDP (n = 232)aChange over 1 Year after No Change in PDP (n = 1553)aChange over 1 Year after Conversion to More Liberal PDP (n = 236)aP Value for Difference between Groups with Change to More Restrictive versus More Liberal PDP
Serum phosphorus (mg/dl)−0.3 ± 1.90.1 ± 1.90.0 ± 1.90.11
Corrected calcium (mg/dl)0.0 ± 0.90.1 ± 1.1−0.1 ± 1.10.22
Serum PTH (pg/ml)20.4 ± 383 (n = 209)24.3 ± 362 (n = 1474)31.0 ± 336 (n = 225)0.76
Serum albumin (g/dl)−0.1 ± 0.30.0 ± 0.30.0 ± 0.40.11
Serum creatinine (mg/dl)−0.2 ± 2.0−0.2 ± 1.9−0.2 ± 1.90.85
Normalized PCR (g/kg/d)0.0 ± 0.30.0 ± 0.3 (n = 1554)0.0 ± 0.2 (n = 235)0.94
EDW (kg)−0.8 ± 4.5−0.7 ± 4.6 (n = 1554)−1.3 ± 3.9 (n = 235)0.24
Triceps skinfold thickness (mm)0.5 ± 10.8 (n = 216)−0.7 ± 7.7 (n = 1385)−1.0 ± 7.6 (n = 220)0.11
Mid-arm muscle circumference (cm)−0.5 ± 3.5 (n = 216)0.0 ± 2.8 (n = 1385)−0.1 ± 3.0 (n = 220)0.25
Observed caloric intake (kcal/kg/d)0.3 ± 10.9 (n = 213)0.0 ± 10.5 (n = 1403)1.3 ± 10.0 (n = 214)0.35
Observed protein intake (g/kg/d)0.0 ± 0.5 (n = 213)0.0 ± 0.5 (n = 1403)0.0 ± 0.5 (n = 214)0.99
  • PCR, protein catabolic rate; EDW, estimated dry weight.

  • a Except where indicated.