Table 2 Predictive value of parameters of calcium, phosphate and iPTH for cardiovascular mortality by univariable Cox regression model

Baseline serum calcium

0.408

0.224

0.096–1.729

Baseline serum phosphate

1.820

0.129

0.840–3.945

Baseline serum iPTH

1.003

0.525

0.992–1.011

One-year mean serum calcium

0.910

0.892

0.236–3.512

One-year mean serum phosphate

1.015

0.965

0.507–2.032

One-year mean serum iPTH

1.001

0.158

0.998–1.002

One-year serum calcium variability

0.834

0.459

0.522–1.264

One-year serum phosphate variability

0.201

0.477

0.002–16.754

One-year serum iPTH variability

1.002

0.978

0.991–1.009

One-year achievement rate of serum calcium

–

–

–

 Proportion = 0%

1.042

0.947

0.305–3.557

 Proportion = 25%

1.961

0.116

0.846–4.545

 Proportion = 50%

1.157

0.734

0.499–2.680

 Proportion = 75%

1.115

0.799

0.481–2.586

 Proportion = 100%

Ref

–

–

One-year achievement rate of serum iPTH

–

–

–

 Proportion = 0%

1.554

0.394

0.563–4.288

 Proportion = 25%

1.39

0.538

0.487–3.966

 Proportion = 50%

1.507

0.362

0.624–3.638

 Proportion = 75%

0.688

0.523

0.218–2.168

 Proportion = 100%

Ref

–

–

One-year achievement rate of serum phosphate

–

–

–

 Proportion = 0%

4.381

0.018

1.779–17.283

 Proportion = 25%

3.244

0.025

1.156–9.105

 Proportion = 50%

1.786

0.282

0.620–5.141

 Proportion = 75%

1.494

0.493

0.474–4.708

 Proportion = 100%

Ref

–

–