Four Surgical Procedures Currently Are Used to Install Pacemakers

question 71

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

• A) 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)Kruskal-Wallis rank Test.