Quastion 6 4 palms Save Answer A risk score ranging from 0 to 10 (higher score indicating higher risk) was developed to evaluate risk of catching a viral disease. The AROC (Area under the ROC curve) ofthe test was 0.88 at a threshold of 7, the sensitivity of the test was 90%, and the specicity of the test was 58%. In the population they tested, the prevalenoe of the disease was 2%. Which of the following stamments are true given this information? 7 If we apply this test to a group of individuals randomly chosen from those who do not have the disease, 42% of the time the test will report a positive result at the threshold. 7 The researchers evaluated this test in another population where the prevalence of the disease was 10%. We would expect the sensitivity to be higher in this population. The researchers would have fewer false positives if the threshold was decreased to 6. 7 If we apply this test to a group of individuals randomly chosen from those who have the disease, 10% of the time the test will report a nagetive result at the threshold. 7 To avoid panic, the researchers wanted to avoid false positive results. They chose a good threshold to achieve this