 environment from which <code>TTT_analytical</code>
is called.</p></td>
    </tr>
    <tr>
      <th>method</th>
      <td><p>a character specifying the method of computation. There are two
options available: <code>'Barlow'</code> and <code>'censored'</code>. Further
information can be found in the <strong>Details</strong> section.</p></td>
    </tr>
    <tr>
      <th>...</th>
      <td><p>further arguments passing to <code><a href='https://rdrr.io/pkg/survival/man/survfit.html'>survfit</a></code>.</p></td