Table 2.

Results of the logistic model having treatment with at least 21 L of postdilution substitution as outcome

		Odds ratio			P value
		Mean	95% confidence interval
			Lower limit	Upper limit
Age (per year)		1.021	1.009	1.033	<0.001
Gender (ref. female)		0.846	0.613	1.169	NS
Primary renal disease (ref. glomerulonephritis)	Diabetic nephropathy	0.564	0.263	1.214	NS
	Cystic kidney disease	0.416	0.187	0.924	0.031
	Chronic pyelonephritis	0.744	0.353	1.567	NS
	Vascular disease/hypertension	1.228	0.705	2.139	NS
	Miscellaneous	0.397	0.182	0.866	0.020
	Unknown	0.827	0.455	1.501	NS
Comorbidities (ref. absent)	Diabetes mellitus	0.691	0.405	1.178	NS
	Coronary artery disease	0.949	0.462	1.952	NS
	Congestive heart failure	0.958	0.636	1.442	NS
	Peripheral vascular disease	1.470	0.952	2.271	0.082
	Cerebrovascular disease	0.970	0.620	1.520	NS
	Chronic pulmonary disease	0.895	0.523	1.530	NS
	Tumor	1.226	0.614	2.450	NS
Vascular access (ref. arteriovenous fistula)	Graft	0.703	0.489	1.009	NS
	Central venous catheter	0.184	0.111	0.304	<0.001
Hematocrit (per %)		1.012	0.977	1.049	NS
Serum albumin (ref. <3.9 g/dL)	3.9–4.1 g/dL	1.339	0.901	1.992	NS
	≥4.2 g/dL	1.581	1.066	2.344	0.023
Treatment time (per min)		1.161	1.139	1.183	<0.001
Mean blood flow (ref. 300–349 mL/min)	<300 mL/min	0.003	0.001	0.007	<0.001
	350–399 mL/min	56.130	31.662	99.504	<0.001
	≥400 mL/min	2142.128	985.954	4654.085	<0.001
Day of the week (ref. Monday)	Tuesday	1.807	1.147	2.848	0.011
	Wednesday	1.505	0.933	2.427	0.093
	Thursday	2.311	1.409	3.790	0.001
	Friday	2.069	1.265	3.385	0.004
	Saturday	2.750	1.139	4.549	<0.001
Filtration fraction (per %)		2.910	2.632	3.217	<0.001

NS, not significant.