What is a weakness of an epidemiological study?

Question

Quizplus · Accepted Answer

Epidemiological studies can only establish associations and cannot prove causation. Other factors may be involved that the study did not account for, making it difficult to establish a direct cause-and-effect relationship between variables. Therefore, while epidemiological studies are useful in identifying potential risk factors, they cannot definitively establish causation. Choices A, B, D, and E are not weaknesses of epidemiological studies.

What Is a Weakness of an Epidemiological Study