title: How to modify table headers in the gtsummary package?
body: <p>Very simple question, but I can't find a straightforward way of doing it.  I want to change the default text of a <code>tbl_summary</code> object to say "Variable" instead of "Characteristic" in the first column.  Example:</p>
  
  <pre><code>library(gtsummary)
  library(dplyr)
  head(trial)
  trial2 =
    trial %&gt;%
    dplyr::select(trt, marker, stage)
  tbl_summary(trial2)
  </code></pre>
  
  <p>Looking through the documentation, it looks like this information is stored in a <code>.$table_header object</code> and I could just modify it directly, but I was wondering if there is a simple way to change the header names.  The function <code>modify_header()</code> seemed promising, but it doesn't appear to be able to change the names of the columns. </p>