Characteristics of the included trials.

Abbreviations: MHD, Maintenance hemodialysis; Elemental calcium dose, Elemental calcium content of phosphate binders; NC, not clear. a. The elemental calcium dose was 1000mg and 1500mg for patients with the serum phosphorus level 1.96–2.26mmol/L, 2.27–2.75mmol/L respectively. Characteristics of the included trials.缩写说明：MHD（Maintenance hemodialysis，维持性血液透析）；元素钙剂量（Elemental calcium dose，即磷结合剂的元素钙含量）；NC（not clear，不明确）。 a. 针对血清磷水平分别为1.96–2.26mmol/L、2.27–2.75mmol/L的患者，其元素钙剂量分别为1000mg与1500mg。 纳入试验的特征。