Table 6: Adjusted association between RVV and dialysis in CKD patients.

CoefficientsEstimateStd. errorPr (>t)

Hb (g/dL) 0.115250.149980.446544
Hb (g/dL) ≥ 12.50.368400.137350.010411
Hb (g/dL) : dialysis−0.048900.172280.777940
Hb (g/dL) ≥ 12.5: dialysis−0.422020.153850.008912
1,25D (pg/mL) −0.176250.080000.033131
P (mg/dL) −0.109630.069170.120476
1,25D (pg/mL) : P (mg/dL) 0.240830.105560.027658

Multiple -squared: 0.3592. Hb was recoded into three levels according to values 11.5 and 12.5 based on its relationship with RVV. Levels of 1,25D were recoded into two levels according to their median in the subsample without missing values in the variables of the model. Hb: hemoglobin; 1,25D: 1α,25-dihydroxyvitamin D; P: serum phosphorus.