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Analyse and interpret results
Analysis problems are usually interpretation problems. Start from what you are estimating, choose an approach that fits your variables and design, then report the estimate, its uncertainty and what it means in practice.
Start with this
Choose an analytical approach
Start from your objective and outcome, and get a likely analysis, the effect estimate to report and the assumptions to check.
Open itThen work through these, in order
- Choose the right statistical testWork from variables and design rather than memorising a table.
- Know what your variables are doingIndependent, dependent, confounding and mediating variables in practice.
- Read p < 0.05 correctlyWhat a small p-value does and does not tell you.
- Interpret a 95% confidence intervalReport precision, not just significance.
- Judge whether a result mattersSeparate statistical significance from practical importance.
- Report results without a p-value listWrite a results section a reader can follow.
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