Document Classification

Section Type: RESULTS

Text: The 12-month primary patency rates in the Viabahn and BMS groups were : intention-to-treat (ITT) 70. 9 % (95 % confidence interval [CI] : 0. 58 to 0. 80) and 55. 1 % (95 % CI : 0. 41 to 0. 67) (log-rank test p = 0. 11) ; treatment per-protocol (TPP) 78. 1 % (95 % CI : 0. 65 to 0. 86) and 53. 5 % (95 % CI : 0. 39 to 0. 65) (hazard ratio : 2. 23 [95 % CI : 1. 14 to 4. 34) (log-rank test p = 0. 009).