Question

Results of a clinical trial show that 55 patients who received laser surgery for nearsightedness had severe nausea and vomiting after the procedure. The same local anesthetic was administered to all 55 patients. What information do you need to determine whether the anesthetic led to the nausea and vomiting these laser surgery patients had after their procedure?
a. The denominator
b. The numerator
c. The ratio
d. The proportion

Answer

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