Comparisons against baseline within randomised groups are often used and can be highly misleading

<p>Abstract</p> <p>Background</p> <p>In randomised trials, rather than comparing randomised groups directly some researchers carry out a significance test comparing a baseline with a final measurement separately in each group.</p> <p>Methods</p> <p&...

Full description

Bibliographic Details
Main Authors: Bland J Martin, Altman Douglas G
Format: Article
Language:English
Published: BMC 2011-12-01
Series:Trials
Subjects:
Online Access:http://www.trialsjournal.com/content/12/1/264