Articles on Causality

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In cases where associations are found, researchers must consider dosage response, differences between siblings and other factors to determine a cause-and-effect relationship. Ronaldo Schemidt/AFP via Getty Images

What parents need to know about Tylenol, autism and the difference between finding a link and finding a cause in scientific research

Trump’s definitive statements that Tylenol use during pregnancy causes autism suggest certainty that the science does not support.

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