Research methods
A positive test: why accuracy is not the whole answer
Use two fictional populations to see how sensitivity, specificity and the frequency of a condition shape what a positive result means.
Read the guide · 6 minFrom a test result to an outcome that matters
Connect diagnostic accuracy, screening, safety and patient experience without treating one kind of result as proof of another.
4 articles · About 23 minutes in total · Read at your own pace
Research methods
Earlier diagnosis, longer survival: did screening actually help?
Understand lead-time bias, length bias and overdiagnosis before interpreting a screening headline—and see which outcomes can answer a different question.
Read the guide · 6 minResearch methods
Read the safety table: what “well tolerated” can leave out
Learn to separate adverse events from adverse reactions, count people rather than episodes and interpret zero events without claiming zero risk.
Read the guide · 5 minResearch methods
Did people feel better? Reading symptom and quality-of-life results
Understand questionnaire scores, meaningful change and why a group average can hide very different experiences among participants.
Read the guide · 6 min