Pharmacy PEBC Practice Exam

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Prepare for the Pharmacy PEBC Exam with comprehensive quizzes and detailed explanations. Utilize multiple choice questions and flashcards to enhance your understanding and readiness for the exam!

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Type II statistical error in a study comparing 2 drug treatment regimens occurs when:

The control drug is not a 'gold standard' treatment.
A statistically significant difference exists but the difference is not clinically important.
The population under investigation does not represent the population with the disease.
The data shows no difference between 2 treatment regimens and a difference actually does exist.

The correct answer is: The data shows no difference between 2 treatment regimens and a difference actually does exist.

Type II statistical error, also known as a false negative, occurs when a difference truly exists between two treatments, but the data incorrectly concludes that there is no difference. This can happen for a variety of reasons, such as a small sample size or measurement errors. The other options do not directly describe Type II statistical error. Option A refers to the control drug not being a reliable comparison, option B describes a statistically significant but not clinically important difference, and option C mentions a potential sampling bias. These factors could all impact the validity of a study, but they do not specifically describe Type II statistical error.