Table 2. PTH, serum calcium, serum phosphorus, and Ca × P at baseline and during the maintenance phase

AMG 073Placebo
Mean (SE)nMean (SE)n
a P < 0.001 comparing treatment groups.
b P = 0.217 comparing treatment groups.
c P = 0.013 comparing treatment groups.
PTH (pg/ml)
    baseline626 ± 5336583 ± 7235
    maintenance phase451 ± 7434552 ± 8731
    % changea−32.5 ± 7.6343.0 ± 8.531
Serum calcium (mg/dl)
    baseline9.6 ± 0.1369.7 ± 0.135
    maintenance phase9.2 ± 0.1349.9 ± 0.131
    % changea−4.6 ± 1.4342.6 ± 1.331
Serum phosphorus (mg/dl)
    baseline6.0 ± 0.2365.5 ± 0.235
    maintenance phase5.8 ± 0.2345.7 ± 0.231
    % changeb−2.6 ± 3.4347.0 ± 5.531
Ca × P (mg2/dl2)
    baseline57.6 ± 1.63653.4 ± 2.335
    maintenance phase53.1 ± 1.83456.6 ± 2.331
    % changec−7.9 ± 2.93411.0 ± 6.531