Free explainer2 min read
Pragmatic versus explanatory trials
Understand the model, recognise it in a stem, separate the look-alikes, then apply it.
01Memory anchor
Efficacy = ideal world (internal validityHow confidently a study's own results can be attributed to the exposure or treatment being tested, rather than to error.Read more →); effectiveness = real world (external validityHow well a study's findings generalise to people and settings outside the study itself.Read more →).