Table 4 Multiple regression analyses

Sex, (female = 0/male = 1)

− 0.131

< 0.001

Age at baseline, years

−0.102

< 0.001

Plasma Creatinine at baseline, μmol/L

0.508

< 0.001

Plasma Ca²⁺ at baseline, mmol/L

0.185

< 0.001

Plasma PTH at baseline, pmol/L

−0.220

< 0.001

Parathyroidectomy, (no = 0/yes = 1)

−0.075

< 0.001