Oxford University Press, 2006. - 197 p.
OverviewApples or Oranges? Selection of the Control Group
Who Was Left Out? Exclusions, refusals, and drop-outs
Mountain or Molehill? The Clinical Importance of the Results
What Do the Other Witnesses Say? Corroborating Evidence
Do the Pieces Fit Together? Systematic overviews and meta-analyses
What Do All These Numbers Mean?
Where Is the Evidence? Searching for Information