Despite similar body weight reduction at hospital discharge in the 2 groups ( 7.5 5.5 and 7.9 9.0 kg , respectively ; P = .75 ) , a lower incidence of rehospitalizations for HF was observed in the ultrafiltration-treated patients during the following year ( hazard ratio 0.14 , 95 % confidence interval 0.04-0 .48 ; P = .002 ) .