the lowest dose.</p></td>
    </tr>
    <tr>
      <th>true_eff</th>
      <td><p>the true probabilities of efficacy at the doses under
investigation; a vector of numbers between 0 and 1.</p></td>
    </tr>
    <tr>
      <th>true_tox</th>
      <td><p>the true probabilities of toxicity at the doses under
investigation; a vector of numbers between 0 and 1.</p></td>
    </tr>
    <tr>
      <th>cohort_sizes</th>
      <td><p>a vector of integer cohort sizes. A dose decision is made
when each cohort is comple