Diagnosis and risk stratification defines what we do in EM the most which leads to diagnostic studies being of huge interest. In an ideal world a test would always identify the disease when it is present and always rule it out when the person is disease free.
However, things aren’t as simple as that. In this section we take a look at diagnostic studies and the particular issues we need to consider and be aware of.
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The gold standard is the new diagnostic test under investigation that the researcher is looking to prove to be the best test?
It is important to assess the population being studied in the research when considering its generalisability?
A kappa value of 1 means that inter-observer reliability is no better than that of chance?
It is not essential for researcher to state the cost of performing the diagnostic test being evaluated?