lation, whether or not the person takes the <code>drug</code> depends on the subject’s <code>health</code>. People who are in good health are not prescribed the medication. This is why there is a negative sign in the <code>drug &lt;- - health</code> mechanism.</span>
</dd>
<dt data-target-cell="annotated-cell-1" data-target-annotation="3">3</dt>
<dd>
<span data-code-cell="annotated-cell-1" data-code-lines="4" data-code-annotation="3">The general <code>health</code> of the patient influences <code>mortalit