NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Study for the NAPLEX exam with a comprehensive quiz featuring multiple-choice questions and in-depth explanations. Build your pharmacological knowledge and increase your chances of passing the pharmacist licensure examination!

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How is the Odds Ratio (OR) interpreted when it's greater than 1?

Event rate in the treatment group is lower
Event rate is the same, no advantage to treatment
Event rate in the treatment group is higher
Cost-effectiveness of the new treatment is better

The correct answer is: Event rate in the treatment group is higher

When the Odds Ratio (OR) is greater than 1, it indicates that the event rate in the treatment group is higher compared to the control group. This means that the odds of the event occurring are higher in the treatment group, suggesting a potential increased risk or an effect of the treatment being studied. Therefore, option C is the correct interpretation of an Odds Ratio greater than 1. Option A is incorrect because an Odds Ratio greater than 1 does not suggest a lower event rate in the treatment group. Option B is incorrect because an Odds Ratio greater than 1 does not indicate that the event rate is the same between the treatment and control groups, nor does it signify that there is no advantage to the treatment being studied. Option D is incorrect because the Cost-Effectiveness of a new treatment is not determined by the Odds Ratio. The Odds Ratio specifically deals with the likelihood of an event happening in one group compared to another.