Converting ratios to percentage change

Video published on 9 June 2016 by H. Gilbert Welch.

Listen to Dr. H. Gilbert Welch‘s explanations for converting common medical ratios (relative risks, relative rates, hazard ratios) into percentage change (30% lower, 50% higher).

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• Absolute v. Relative Change : Two Different Ways of Saying the Same Thing.
• Cancer Statistics: the Difference between Survival and Mortality Rates.
• Our Common Misunderstandings surrounding Risk and Statistics.
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