Bakken AM (41) | Retrospective | 2007 | 75 | 30-d rates of 76% for both groups and 12-mo rates of 29% for PTA and 21% for stent (*P* = 0.48) | Secondary patency was also equivalent (*P* = 0.08), with a 30-d patency rate of 81% and 12-mo rate of 73% for the PTA group, *versus* stent secondary patency rates of 84% at 30 d, and 46% at 12 mo | |

Rajan, DK (40) | Observational (no control group) | 2007 | 89 | In the fistula group were 88.5% ± 4.8, 59.4% ± 7.6, and 46% ± 7.9 at 3, 6, and 9 mo, respectively. | n/a | |

| | | | In the graft group, the rates were 78.1% ± 7.3, 40.7% ± 9, and 16% ± 7.3, respectively. | | |

Maya, ID (38) | Observational (no control group) | 2007 | 23 | 19% at 1 yr | 64% at 1 yr | All stent had restenosis on follow-up venogram. |

Haage, P (35) | Observational (no control group) | 1999 | 50 | 3, 6, 12, and 24 mo were 92%, 84%, 56%, and 28 | 97% after 6 and 12 mo, 89% after 24 mo, and 81% after 36 and 48 mo | |

Vesely, TM (46) | Observational (no control group) | 1997 | 20 | 1 mo, 3 mo, 6 mo, and 1 yr: 90%, 67%, 42%, and 25% | at 3 mo, 6 mo, 1 yr, and 2 yr: 89%, 64%, 56%, and 22% | |