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Understanding evidence

Turn a headline into a question you can check.

Start with the comparison, name the outcome and put the numbers in context. Then connect the finding to other research without losing the uncertainty along the way.

4 reading questions · 3 starting guides · Updated 27 Sep 2026

AI-written reading guide · Source notes & coverage

Choose a reading question
Medical books on shelves in Hamamatsu Municipal Hamakita Library
Illustrative photograph Image: Asturio Cantabrio · CC BY-SA 4.0
BEGIN WITH THE QUESTION

How do you read past the headline?

Choose the part of a paper that is holding you up. Each question leads to a worked guide and a glossary entry.

01

What is being compared?

Find the design, groups and assignment method before reading a causal claim.

TRY THIS WHILE READING

Write the comparison as “this group versus that group”. If you cannot name both, return to the methods before repeating the result.

Source note ↗
02

What does the headline number leave out?

Look for the denominator, effect scale, comparison-group risk and time frame.

TRY THIS WHILE READING

Keep a four-part note: outcome, number affected, number observed and duration. An empty field is a question to resolve, not a detail to guess.

Source note ↗
03

Which possibilities remain unresolved?

Read the confidence interval in relation to the actual question and any pre-specified decision boundary.

TRY THIS WHILE READING

When a paper asks whether an approach is non-inferior, copy the margin and its scale into your notes. A result near zero alone does not answer that question.

Source note ↗
04

How does this fit with other studies?

Check whether the wider review is transparent about its question, search, included studies and synthesis.

TRY THIS WHILE READING

Put two studies side by side before declaring a contradiction. Different populations, outcomes or follow-up may mean that they answered different questions.

Source note ↗
TAKE IT ONE QUESTION AT A TIME

A route through the evidence

3 published reading guides · About 19 minutes · Each can be read on its own.

Use the editable study notebook

KEEP BESIDE THE PAPER

A reusable note for the next paper

Use one column in your own notes for each paper. Record what is reported; leave an explicit question where information is missing.

On a narrow screen, scroll the table sideways to read every column.

Keep track ofRecord from the paperThen ask
QuestionPopulation, intervention or exposure, comparator and outcomeDoes the headline preserve this question?
DesignAssignment, measurement and follow-upWhat alternative explanations remain?
ResultEffect estimate, denominator and time frameCan the result be expressed in absolute terms?
UncertaintyConfidence interval and important missing informationWhich plausible possibilities are still open?
ContextRelevant related studies and reasons for differencesWhat would genuinely change the interpretation?

Original reading prompts. This is not a validated scoring tool, a systematic review or a treatment recommendation.

THE NEXT USEFUL QUESTION

What would help you understand more?

These are questions to take back to a paper or a future study. They do not imply that any particular intervention works.

  1. Which missing detail most limits your understanding?
  2. Is the next useful step a better measurement, a better comparison or more follow-up?
  3. What would make your current interpretation change?
CONTINUE EXPLORING

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Build a simple document trail from registration to publication, and learn how to investigate changed outcomes without assuming every amendment is misconduct.

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SOURCES & COVERAGE

What this dossier provides

Reading questions and prompts prepared and source-checked by AI. No human editorial or clinical review has been completed. The linked guides include their own sources and access notes.

This is a selected reading guide, not a comprehensive evidence search or clinical guideline. Check each article’s scope before applying its conclusions to another question.

Following saves this topic in your browser. Topic RSS carries published articles assigned to this topic. For all new explainers, use the research feed.

Methods behind the reading questions

  1. Cochrane Handbook, chapter 3: defining the research question

    Selected online sections on populations, comparisons, outcomes and time points checked. Supports the reading framework; no treatment effects were extracted. · Accessed 27 Sep 2026

  2. Cochrane Handbook, chapter 15: interpreting results

    Selected online sections on absolute and relative effects, uncertainty and interpretation checked. The prompts here are original editorial exercises. · Accessed 27 Sep 2026

  3. PRISMA 2020: reporting systematic reviews

    Accessible full-text reporting statement checked during preparation of the linked meta-analysis guide on 27 September 2026. Reporting transparency is distinct from methodological quality. · Accessed 27 Sep 2026

  4. FDA: Non-Inferiority Clinical Trials to Establish Effectiveness (2016)

    Final guidance PDF checked during preparation of the linked non-inferiority guide on 27 September 2026. The reading prompt concerns pre-specified margins, not any treatment recommendation. · Accessed 27 Sep 2026

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