PTH and chronic kidney disease: The results showed that age (β = 0.255, p = 0.005), hemoglobin (β = −0.341, p = 0.001), intact PTH (β = 0.221, p = 0.039), and eGFR (β = −0.262, p = 0.003) were significantly and independently associated with serum f(HNA) in our CKD patients (R2 = 0.365, p < 0.001) (Table 3).