Key result
Relative risk reduction, absolute risk reduction, and number needed to treat serve as the primary statistical metrics for measuring and interpreting the size of a treatment effect.
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Clinicians may use RRR, ARR, and NNT to interpret effects; leaves open standardization in ophthalmology reporting.
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Hollands et al. (2010) studied this question. Relative risk reduction, absolute risk reduction, and number needed to treat serve as the primary statistical metrics for measuring and interpreting the size of a treatment effect.
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