Cohen's Kappa Statistic/Examples
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Examples of Use of Cohen's Kappa Statistic
Medical Diagnosis
Let there be $80$ patients claiming to suffer from depression
Let there be $2$ doctors who are to assess whether or not it is appropriate to treat each patient with a particular antidepressant drug.
In $32$ cases, both agree that treatment is appropriate.
In $35$ cases, both agree that treatment is not appropriate.
In the remaining $13$ cases, they disagree: one doctor believes treatment is appropriate, while the other does not.
Then Cohen's kappa statistic $\kappa$ is evaluated to be:
- $\kappa = 0 \cdotp 675$