Table 3.

Comparisons of catheter-tip colonization risk according to renal replacement therapy modalities (CRRT versus IHD)

	Intent-to-Treata			On-Treatmentb
	HRc	95% CI	P	HRc	95% CI	P
Unadjusted	1.57	(1.11 to 2.21)	<0.01	1.44	(0.94 to 2.20)	0.10
Marginal structural models	0.96	(0.77 to 1.20)	0.73	0.71	(0.56 to 0.92)	<0.009
Propensity-score matched	0.85	(0.53 to 1.34)	0.49	0.84	(0.47 to 1.50)	0.56

^aGroups were defined by initial modality of renal replacement therapy, regardless of change in modality prescription.

^bGroups were varying according to change in modality prescription.

^cHR > 1 indicates an increase risk in the IHD modality as compared CRRT to modality.