Evidence-Based Practice / Unit 6 EBP 0782 short lesson, about 20 seconds
Pre-Post Designs
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The idea
A pre-post design delivers the intervention to one group and collects data before and after it to determine impact.
In practice
The same patients measured on two occasions either side of a change.
Where people slip
Anything else that changed between the two measurements is a candidate explanation for the difference.
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