Testing Treatments international
Promoting critical thinking about treatment claims
A short article explaining the relative strengths and weaknesses of different types of study design for assessing treatment effects.
This short article gives a brief guide to the different study types and a comparison of the advantages and disadvantages. See also Levels of Evidence
These study designs all have similar components (as we’d expect from the PICO):
And for experimental and analytic observational studies:
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This module looks at the critical appraisal of randomised trials.
University of New South Wales Medical Stats Online Tutorial 5 addresses ‘Bias - the biggest enemy’.
GET-IT provides plain language definitions of health research terms