Consider an epidemiological study that investigates the relationship between fish intake and cancer risk. Which of the following statements is TRUE about this study design?

Question

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The statement that subjects in the study will be randomly assigned to an experimental group and a control group is not true because this is not a randomized controlled trial. The statement that the results of the study can be used to establish a cause-and-effect relationship between fish intake and cancer risk is also not true because there may be confounding variables that cannot be controlled for. The other statements are true. The study is an observational study that examines the relationship between fish intake and cancer risk without any intervention. The findings may suggest a relationship between the two variables, but cannot establish causality.

Consider an Epidemiological Study That Investigates the Relationship Between Fish