Free explainer2 min read
Choosing a study design
Understand the model, recognise it in a stem, separate the look-alikes, then apply it.
Watch it explainedYou want to study a rare cancer. Do you follow thousands of healthy people for decades? There is a much cheaper way, and it faces the other direction.
Per Grimes DA & Schulz KF An overview of clinical research: the lay of the land (The Lancet epidemiology series), 2002
Visual explanationUse the diagram to rebuild the concept from memory.
01Memory anchor
Case-control looks Back from the Cases; Cohort Carries on forward.
References & guidelines
- Grimes DA & Schulz KF, An overview of clinical research: the lay of the land (The Lancet epidemiology series) · 2002
- Grimes DA & Schulz KF, Cohort studies: marching towards outcomes (The Lancet epidemiology series) · 2002
- Grimes DA & Schulz KF, Compared to what? Finding controls for case-control studies (The Lancet epidemiology series) · 2002
- Grimes DA & Schulz KF, Bias and causal associations in observational research (The Lancet epidemiology series) · 2002
- Bland M, An Introduction to Medical Statistics (Oxford University Press)
- Straus SE et al, Evidence-Based Medicine: How to Practice and Teach It
Checked against Grimes DA & Schulz KF An overview of clinical research: the lay of the land (The Lancet epidemiology series), 2002