DSSCAT<span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/rep.html'>rep</a></span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"STUDY DISCONTINUATION"</span>, <span class='st'>"ADVERSE EVENT"</span>, <span class='st'>"PROTOCOL"</span><span class='op'>)</span>,<span class='fl'>3</span><span class='op'>)</span>,
 stringsAsFactors<span class='op'>=</span><span class='cn'>FALSE</span>
<span class='o