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Selection bias in a self-reported forum sample · RESEARCH-20200

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MethodsReader 00621
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A collection of forum reports is being treated as a representative sample. What limitations belong in the note?

Record format: question; proposed response; source or method; limitation. Use a dated correction only if the underlying wording or evidence changes. Record RESEARCH-20200.



   
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CitationNotes 00622
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Discuss who chose to post, missing outcomes, unverifiable records and changes in reporting over time. Such material can suggest questions but cannot establish population-level rates.



   
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