Researchers have developed a new test, Shox, which they claim will improve the detection of myocardial infarction. In their study of 2108 patients who had confirmed myocardial infarction, Shox tested negative in 231 cases. What is the sensitivity of Shox?
11%
89%
25%
Not Enough Information
After further testing, 9300 individuals were tested using Shox. Of these, 5700 were shown to have myocardial infarction using the gold-standard test. Of the patients with confirmed MI, 89% tested positive with Shox. Of those without, 15% tested negative. What is the specificity of Shox?
15%
61.2%
38.7%
Shox is found to have a Positive Predictive Value of 78%. If 1500 patients test positive with Shox, how many will have a myocardial infarction?
330
1170
A new paper published on Shox shows that it has a sensitivity of 82% and a specificity of 42%. What are the false positive and false negative rates?
FP = 82%, FN = 42%
FP = 58%, FN = 42%
FP = 58%, FN = 18%
FP = 18%, FN = 58%
FP = 42%, FN = 18%
Not enough information
A biochemical company is developing a new screening blood test for breast cancer. What attribute would they most like their new test to have?
Sensitivity
Specificity
The same biochemical company now wants to develop a diagnostic test for breast cancer. What attribute would the most like their new test to have?
