Evidence-Based Practice / Unit 6 EBP 0777 short lesson, about 20 seconds
Measurement Bias
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The idea
Measurement bias arises from how data are collected — an incorrectly calibrated instrument, or a measure that does not capture the true value.
In practice
An instrument reading consistently high throughout a study.
Where people slip
A reliable instrument can be reliably wrong, which is exactly why validity and reliability are separate questions.
Your place on the trail
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