ERRATUM - CLINICAL BIOSTATISTICS MRS

pg 83 Last paragraph: If the absolute risk (incidence) of death in a person left untreated for a rare pulmonary disease is 0.02 (2%) and the absolute risk (incidence) of death if the person is treated for the disease is 0.002 (0.2%), then the relative risk of death in treated individuals is 0.002/0.02 = 0.1 (10%).

pg 84 First paragraph: As mentioned, the absolute risk (incidence) of death when untreated is 0.02 (2%), and the absolute risk (incidence) of the disease when treated is 0.002 (0.2%).

pg 87:
PPV = (number who test positive who have the disease)/ (number who test positive)

NPV = (the number of people who test negative and don’t have the disease)/ (the number of people who test negative)