TABLE 3.

Primary outcomes: Univariate and multivariate regression analysis

Outcome	CVVH	CVVHDF	Univariate analysis	Multivariate analysis*
Mortality at 30 days, n/n (%)	54/94 (57)	32/59 (54)	OR† 1.14 (95% CI 0.59 to 2.19); P=0.70	OR 1.35 (95% CI 0.62 to 2.95); P=0.45
Hospital mortality, n/n (%)	55/94 (59)	37/58 (64)	OR 0.80 (95% CI 0.41 to 1.57); P=0.52	OR 0.85 (95% CI 0.38 to 1.89); P=0.69
ICU length of stay, days, mean	19.35	46.84	MD‡ −27.5 (95% CI −59.46 to 4.43); P=0.09	MD −28.22 (95% CI −65.26 to 8.81); P=0.14
Hospital stay, days, mean	28.53	62.85	MD −34.32 (95% CI −68.03 to −0.60); P=0.05	MD −34.14 (95% CI −72.92 to 4.65); P=0.08

^*All models were adjusted for sex, ischemic heart disease, liver disease, hypertension, Acute Physiology and Chronic Health Evaluation score, pre-central venous pressure, 24 h urine output and pre-continuous renal replacement therapy, which were identified by comparing the group balance. Backward stepwise regressions were used for variable;

^†OR from logistic model;

^‡MD Mean difference from linear regression model. CVVH Continuous venovenous hemofiltration; CVVHDF Continuous venovenous hemodiafiltration; ICU Intensive care unit