attributable risk/absolute risk reduction (epidemiology)
number needed to harm (NNH) (epidemiology)
number needed to treat (NNT) (epidemiology)
Definition of NNT/NNH
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Calculation from absolute risk reduction
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Interpretation and clinical application
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Confidence intervals for NNT/NNH
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Relationship with relative risk reduction
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Time-dependent NNT
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NNT in prevention vs treatment
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NNT in screening programs
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Cost-effectiveness and NNT
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Limitations and common misinterpretations
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Reporting in clinical guidelines
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Comparing interventions using NNT
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These Number needed to treat/harm flashcards are designed for USMLE Biostatistics preparation, using active recall to help you retain high-yield concepts, clinical correlations, and commonly tested facts. Each card prompts you to retrieve information from memory rather than passively reviewing notes, which research shows leads to significantly better exam performance.
The 3 cards in this deck cover the most important topics in Number needed to treat/harm, including key mechanisms, diagnostic criteria, treatment protocols, and clinical pearls that frequently appear in USMLE examinations. Cards are organised by chapter so you can focus on specific areas or work through the entire topic systematically.
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