Further mediation analysis revealed that ~86.2% of the relationship between Kt/V and high ABI was mediated by serum calcium in PD patients (mediation effect = 86.2%, ab = -0.220, 95% CI: -0.381 to -0.059, P = 0.008), especially in those starting PD before 55 years of age and with normal body mass index. 
THERM