Every feature begins with a question. What does the test measure? Who was studied? Which parts of the setup change the answer? What decision could this result support?
Our evidence ladder
We start with consensus statements, guidelines, systematic reviews and primary studies where they answer the question. We link to the source, paraphrase rather than reproduce it and mark uncertainty when methods, populations or devices differ.
Our practical filter
A useful protocol states its procedure, equipment, population, reference context and limits. Reference values are context, not universal targets. A tool is discussed for the decision it can support, not for the number of features on its product page.
Safety boundary
This is educational media. Persistent symptoms, suspected illness, sleep disorders or return-to-play decisions belong with an appropriately qualified professional.
Keep the context close
Good performance information is easier to use when its source, setting and uncertainty remain visible. Browse the protocol library, read the editorial method or send a correction to [email protected]. We prefer a careful question to a confident shortcut.