“…Sample-size re-estimation was the second most common type of adaptive design, used in 14 trials (24.6%); 8 (25.8%) in dialysis populations and 6 (23.1%) in dialysis outcome trials ( Table 2 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 ). Eight trials (57.1%) were affected by the use of sample-size re-estimation adaptive design including 6 trials (75%) that increased sample size.…”