Question

ANSWER THESE QUESTIONS PLEASEE!!!

D Question 10 1 pts Use the following information for questions 10-14. Below are results of a test using an acid-free bacillus smear to screen for active pulmonary tuberculosis in patients who were diagnosed with the disease and in controls that did not have the disease No Tuberculosis 50 750 Total 240 760 Tuberculosis Positive Screening Result 190 Negative Screening Result Total 10 200 800 1,000 Calculate the sensitivity. A 95.0% O B. 92.0% ° C. 88.0% D. 78.0% Question 11

Answer 1

ANSWERS

QUESTION 10

    A. Sensitivity

              Formula = True positive / (True positive + True negative) *100.

              True positive of TB = 190

              True negative of TB = 10

                So

                  Sensitivity = 190 / (190 +10) * 100

                                 = 190 / 200 *100

                                   = 95%

QUESTION 14

       C. The Predictive values.

                     * Both positive and negative predictive values are influenced by the prevalence of

                        disease in a population.

                     * If the test conducted in a high prevalence setting the person who test positive

                       truly have the disease than test is performed in a low prevalence setting.