should be done with missing values in <code>newdata</code>.  If <code>na.pass</code> (the default) then summaries of <code>NA</code> are produced for missing covariate values.  If <code>na.omit</code>, then missing values are dropped, the behaviour of <code>summary.flexsurvreg</code> before <code>flexsurv</code> version 1.2.</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>A data frame with estimate and confid