Routine laboratory testing in hemodialysis: how frequently is it needed?

BMC Nephrology

Table 3 Multivariate logistic regression analysis of factors associated with a change in ESA prescription more than 5 times per year

	OR	95% CI	P-value
Dialysis vintage	0.99	0.99; 1.01	0.544
ESA dose	1.00	1.00; 1.00	0.430
Iron dose	1.59	1.12; 2.25	0.010
Number of changes in iron prescription per year	1.23	1.08; 1.41	0.003
Hemoglobin level	0.91	0.62; 1.32	0.608
Ferritin level	1.004	1.002;1.005	< 0.001
TSAT percentage	0.98	0.75; 1.26	0.855
PTH level	0.99	0.99; 1.00	0.048
URR percentage	1.06	0.99; 1.14	0.113

Note. OR, odds ratio; 95%CI, 95% Confidence Interval; TSAT, transferrin saturation; iron dose in ampoules of 100 mg; dialysis vintage in months; p-value < 0.05 is statistically significant. We included in this model all variables with P-value < 0.05 in the bivariate analysis

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