Table V.

Duration of catheter dependence after placement of new vascular access

Access group	Catheter days prior to initial access use Mean [95% CI]	Catheter days after initial access use Mean [95% CI]	Total catheter days after access placement Mean [95% CI]
AVF w/o prior intervention	99 [92–106]	78 [40–116]	177 [137–216]
VF w/ prior intervention	159 [148–170] a	145 [99–191] c	304 [257–352] a
AVG w/o prior intervention	38 [36–41] a	127 [86–167]	165 [125–206]
AVG w/ prior intervention	79 [65–94] b	221 [102–339]	300 [180–420] d

^ap< .0001 vs AVF w/o prior intervention

^bp< .0001 vs AVG w/p prior intervention

^cp= .03 vs AVF w/o prior intervention

^dp= .002 vs AVG w/o prior interventions