Recent content by jfergusonmd

  1. J

    Diagnostic test continuous variables

    A new diagnostic test is compared to a gold standard, demonstrating poor sensitivity, worse specificity, PPV, and NPV. Let us assume I know other data about the gold standard positive and negative cases (continuous variables such as patient age, temperature) What tests can be used to interpret...
  2. J

    Help with inter-observer agreement

    Please help if you can (novice level) I have a gold standard test that I would like to compare to a new test. This new test will be assessed as categorical binary outcome (positive or negative) by 2 observers. I can compare reliability of the two observers with kappa. That's easy. How...