In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
One example: Question: A 13-year-old girl is operated on due to Hirschsprung illness at 3 months of age. Which of the following tumors is more likely to be present?
Options: <1> Abdominal neuroblastoma <2> Wilms tumor <3> Mesoblastic nephroma <4> Familial thyroid medullary carcinoma.
Solution is here: 2
Explanation: The answer to the given question should be a tumor, therefore Wilms tumor is the correct answer for the given question.

Now, solve this: Question: Point out the correct definition:
Options: <1> The Necessary Number to Treat (NNT) is the inverse of the Relative Risk (RR). <2> The Relative Risk Reduction (RRR) can clearly differentiate the big risks and benefits of the small ones. <3> The Relative Risk Reduction (RRR) is a measure of the therapeutic effort that clinicians and patients must make to avoid negative results of their illnesses. <4> The Number Necessary to Damage (NND) is calculated by dividing the unit by the Number Needed to Treat (NNT). <5> The Absolute Risk Reduction (RRA) is calculated by the absolute difference of the episode rate in the control group minus the episode rate in the intervention group.
Solution:
5