Experimental studies provide most of the epidemiological data for judging whether an association is causal.

Name: Experimental studies provide most of the epidemiological data for judging whether an association is causal.
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Experimental studies, such as randomized controlled trials, are important for establishing causality, but most epidemiological data comes from observational studies, which are more common and practical for studying associations in real-world settings.

Experimental Studies Provide Most of the Epidemiological Data for Judging