CEBM – Study Designs

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• Format Websites
• Language/s English
• EBM Stage 0 - Why EBM?, 2 - Finding the evidence, 3 - Appraising evidence
• Difficulty Introductory, Intermediate

Key Concepts addressed

• 2-1a Comparison groups should be similar
• 2-1d People should not know which treatment they get
• 1-2e Comparisons are needed to identify treatment effects

Details

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):

• A defined population (P) from which groups of subjects are studied
• Outcomes (O) that are measured

And for experimental and analytic observational studies:

• Interventions (I) or exposures (E) that are applied to different groups of subjects

Read more …..