Document Classification

Section Type: RESULTS

Text: Postimplantation predictors were VVIR cumulative percent ventricular pacing (Cum % VP) > 80 (HR, 3. 58 ; 95 % CI, 1. 72-7. 45), DDDR Cum % VP > 40 or VVIR Cum % VP < or = 80 (HR, 1. 81 ; 95 % CI, 0. 94-3. 50) versus DDDR Cum % VP < or = 40 ; whether QRS duration (QRSd) was paced or spontaneous (HR, 2. 21 ; 95 % CI, 1. 39-3. 54 ; spontaneous versus paced) ; and drugs for atrial fibrillation (HR, 1. 60 ; 95 % CI, 1. 19-2. 15).