Four Surgical Procedures Currently Are Used to Install Pacemakers $\chi$ ² Test for Difference in Proportions

question 294

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)\(\chi\)² 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.

---

Definitions:

Reporting Initiative

A process or program designed to systematically collect, analyze, and disclose information about an organization's performance, particularly in domains such as sustainability or ethics.

Ethics Auditing

A systematic evaluation of an organization's ethical policies and practices, typically to ensure alignment with values and legal standards.

Independent Verification

The process of having a third party check or validate information, findings, or conditions to ensure accuracy or compliance.

Ethics Audit

A systematic evaluation of an organization's ethics programs and practices, aiming to identify potential areas for improvement and ensure compliance with ethical standards.