Question

Suppose we are interested in comparing the effectiveness of two different antibiotics, A and B, in treating gonorrhea. Each person receiving antibiotic A is matched with an equivalent person (age within 5 years, same sex), to whom antibiotic B is given. These people are asked to return to the clinic within 1 week to see if the gonorrea has been eliminated. Suppose the results are as follows:

1) for 40 pairs of people, both antibiotics are successful

2) for 20 pairs of people, antibiotic A is effective whereas antibiotic B is not

3) for 16 pairs of people, antibiotic B is effective whereas antibiotic A is not

4) for 3 pairs of people, neither antibiotic is effective

*Test for the relative effectiveness of the two antibiotics.*

Answer 1