o determine if patient is on intervention. Initialized as 0, but will be changed to current arm in the Start event.</span></span>
<span>  fl.prog <span class="op">=</span> <span class="fl">0</span>, <span class="co">#Flag to determine if patient has progressed. All patients start progression-free</span></span>
<span>  fl.ontx <span class="op">=</span> <span class="fl">1</span>, <span class="co">#Flag to determine if patient is on treatment. All patients start on treatment</span></span>
<span>  fl.PAE <span 