Comparisons against baseline within randomised groups are often used and can be highly misleading.
BACKGROUND: 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. METHODS: We give several examples where this has been done. We use simulation to demonstrate that...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2011
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