A Small Study Was Conducted on a New Procedure for Treating

question 44

Multiple Choice

A small study was conducted on a new procedure for treating atrial fibrillation. The study involved a new way to perform ablation surgery. One method currently being used had a success rate of only 50% in preventing additional episodes of atrial fibrillation within one year. The new method of performing ablation surgery was performed on 8 patients and 6 of the 8 patients did not suffer additional episodes of atrial fibrillation within one year. Choose the statement that best summarizes the significance of this result.

• A)Many people would say that this result has both clinical and statistical significance because the probability of success increases from 50% to 75% and the result could have significant impact on
• Lives.
• B)Although this result may have clinical significance, it does not have statistical significance because the sample size is so small.
• C)Although this result may have statistical significance, it does not have clinical significance because the sample size is so small.
• D)Although this result may have statistical significance, it does not have clinical significance because the sample was not randomly selected.

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