Four Surgical Procedures Currently Are Used to Install Pacemakers

question 22

Multiple Choice

Four surgical procedures currently are used to install pacemakers.If the patient does not need to return for follow-up surgery,the operation is called a "clear" operation.A heart center wants to compare the 4 procedures and collects the following numbers of patients from their own records: Procedure

Which of the following tests will be the most appropriate to find out whether the 4 procedures are equally effective?

• A)X² test for difference in proportions.
• B)Z test for difference in proportions.
• C)One-way ANOVA F test for differences among more than two means
• D)McNemar test.

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Definitions:

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The title held by the president of the United States as the highest-ranking officer in the country's armed forces, responsible for military decisions.

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A political strategy in the United States that aimed to gain electoral support in Southern states by appealing to racism against African Americans.

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