   </tr>
    <tr>
      <th>gamma_sd</th>
      <td><p>Optional, the prior normal standard deviation of the
intercept term in the efficacy logit model. A number. You should prioritise
specifying this value via <code>priors</code> but this option is provided for
backwards-compatibility.</p></td>
    </tr>
    <tr>
      <th>zeta_mean</th>
      <td><p>Optional, the prior normal mean of the slope term in the
efficacy logit model. A number. You should prioritise specifying this value
via  <code>priors</code> b