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63. In a medicinal context, a randomized controlled trial reports a Relative Risk (RR) of 0.8 for a new drug compared to placebo, meaning the drug reduces the risk of the outcome by 20%. What technical measure quantifies this specific risk reduction?
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65. A clinical diagnostician is using a new screening test for a prevalent disease. What epidemiological measure helps them understand the probability that a positive test result correctly indicates the presence of the disease?
