RT Journal Article SR Electronic T1 Responsiveness of outcome measures in randomised controlled trials in neurology JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 274 OP 275 DO 10.1136/jnnp.68.3.274 VO 68 IS 3 A1 P M ROTHWELL YR 2000 UL http://jnnp.bmj.com/content/68/3/274.abstract AB