medium · GMAT Verbal
After a hospital introduced a surgical safety checklist, its surgical infection rate fell. Administrators concluded that the checklist reduced infections and now plan to require it in every department.
Which of the following would be most useful to determine in order to evaluate the administrators' conclusion?
- Whether the hospital adopted other infection-control measures at the same time it introduced the checklist
- Whether the operating surgeons found the new safety checklist quick and easy to finish each time
- Whether the hospital currently treats a larger number of surgical patients than comparable hospitals
- How much money the hospital had to spend in order to introduce, print, and roll out the new surgical checklist
- Whether the hospital's surveyed patients reported noticeably greater satisfaction with the surgical care they received
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