Answer to Question #159517 in Statistics and Probability for kyle

Question

. A clinical trial to assess the effectiveness of the HPV (human papilloma virus) vaccine for preventing cervical cancer in women found a Relative Risk of 0.10 with a 95% Confidence Interval of 0.05 to 0.15. Which of the following statements is the correct interpretation of the study findings?

a)  Women who were vaccinated against HPV are 10 times as likely to develop cervical cancer compared to those who were not vaccinated, and this difference is statistically significant.

b)  Women with cervical cancer are 10 times as likely to have been vaccinated against HPV compared to those who were not vaccinated, but this difference is not statistically significant.

c)Women who were vaccinated against HPV have a <u>90% decrease</u> in risk of developing cervical cancer compared to those who were not vaccinated, and this difference is statistically significant.

d)  Women who were vaccinated against HPV have a 90% increase in risk of developing cervical cancer compared to those who were not vaccinated, and this difference is statistically significant.

 

Answer 1

Solution:

Answer b) is incorrect, since the result is statistically significant (there is confidence interval). Answers a) and d) are incorrect, since the risk is reduced by 90% (0.1 percents are in risk). The only correct interpretation is c)

Answer:

c)