Responders  (n=333) Nonresponders  (n=120) p
Baseline walking speed (ft/sec), mean (SD) 0.97 (0.83) 0.86 (0.59) ns
Walking speed  (ft/sec) at Day 15, mean (SD) 1.39 (1.41) 0.88 (0.71) 0.001
Absolute difference 0.42 0.02
Gain relative to baseline (%) (95% confidence Interval 30.2%      (22.3 to 29.6) 2.3
(0.1 to 6.7)
0.001
Table 2: Walking speed (ft/sec).