RT Journal Article SR Electronic T1 Why randomized controlled trials fail but needn't: 2. Failure to employ physiological statistics, or the only formula a clinician-trialist is ever likely to need (or understand!) JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1226 OP 1237 VO 165 IS 9 A1 David L. Sackett YR 2001 UL http://www.cmaj.ca/content/165/9/1226.abstract