op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/data.frame.html'>data.frame</a></span><span class='op'>(</span>USUBJID <span class='op'>=</span> <span class='fl'>1</span>,
                  DSSTDTC <span class='op'>=</span> <span class='st'>"2016-01"</span>,
                  DSCAT <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'>"DISPOSITION EVENT"</span>, <span class='st'>"OTHER"</span><span class='op