highly significantP < 0.001
A highly significant reduction of RRF loss rate from −0.97 ± 0.3 to 0.27 ± 0.4 mL/min/month was observed in patients on incremental PD ( P < 0.001), which was only marginally the case in patients on HD (from −0.99 ± 0.48 to −0.77 ± 0.5 mL/min/month, P = 0.06).