Epiville

Quizzes

Quiz 7, Module Screening

7. Using the sensitivity and specificity measures you calculated in Question 2 above, calculate what the PPV would be if you screen the total population of Epiville where you estimate the prevalence of SS to be only 1%. (hint: draw a new 2x2 table and write the new column totals for the Clinician Gold Standard using the new "true" population prevalence of 1%, given a total N=1000 Then use the specificity and sensitivity proportions you calculated previously to fill in the rest of the 2x2 table.) NOTE: ONLY USE THE SENSITIVITY AND SPECIFICITY VALUES ROUNDED TO 2 DECIMAL PLACES THAT APPEAR IN THE ANSWER TO QUESTION 2.

Answer = Correct answer — 0.18