(,"data")
#&gt;   USUBJID      SCDTC SC_STUDYEYE ECCAT    ECROUTE ECLAT ECSTDY   VISIT
#&gt; 1       1 2021-01-01        LEFT StudY OPHTHALMIC RIGHT    112 Week 16
#&gt; 2       2 2021-01-01       RIGHT       OPHTHALMIC  left    140 Week 20
#&gt;      ECSTDTC
#&gt; 1 2021-05-01
#&gt; 2 2021-06-01</div><div class='input'>
<span class='va'>sc</span> <span class='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