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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Design
Review
Clinicians should apply these metrics to gauge treatment effects; supports their standardized use in ophthalmology evidence interpretation.
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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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