NANP Board Practice Exam

When judging the accuracy of a newspaper article that states that per The American Journal of Cardiology, vitamin E supplementation increases coronary episodes in the elderly, which one of the following questions is least helpful?

1. Are there other studies that support this claim?

2. Is the American Journal of Cardiology a peer-reviewed journal?

3. What was the sample size of the study?

4. What was the dose of vitamin E used in the study?

The correct answer is: Is the American Journal of Cardiology a peer-reviewed journal?

The rationale for identifying the question about the American Journal of Cardiology as the least helpful centers on understanding the context of research evaluation. While it is certainly valuable to verify whether a journal is peer-reviewed—an important measure of the credibility of the publication—the question does not directly address the content of the claim being made about vitamin E supplementation and its effects on coronary episodes. Evaluating the findings of the article relies more on assessing the validity and replicability of the specific study mentioned. Inquiring about studies that support or contradict the claim can provide a broader understanding of the consensus in the research community. Additionally, examining the sample size is crucial as it indicates the power and reliability of the results; larger sample sizes typically yield more reliable data. Finally, understanding the dosage of vitamin E used is essential because different dosages can result in varied outcomes, impacting the interpretation of the study's findings. In this context, focusing on the content of the study rather than the journal's publication status is more pertinent to evaluating the accuracy of the claim regarding vitamin E supplementation.