p><code><a href="IRT.RMSD.html">IRT.RMSD()</a></code> <code><a href="IRT.RMSD.html">summary(<i>&lt;IRT.RMSD&gt;</i>)</a></code> <code><a href="IRT.RMSD.html">IRT_RMSD_calc_rmsd()</a></code> </p>
        </td>
        <td><p>Root Mean Square Deviation (RMSD) Item Fit Statistic</p></td>
      </tr><tr><td>
          <p><code><a href="itemfit.rmsea.html">itemfit.rmsea()</a></code> </p>
        </td>
        <td><p>RMSEA Item Fit</p></td>
      </tr><tr><td>
          <p><code><a href="itemfit.sx2.html">itemfit