/span>,<span class="st">&quot;years&quot;</span>)</span></code></pre></div></li>
<li><p>To the dataset with values of <code>years</code> and <code>timeperiod</code> values imputed at 5 years, we fit two alternative models, both with a covariate effect on the intensities where the effect was significant (from the non-imputed datasets) and with the effects on death constrained to be the same. One model has a linear effect of a continuous time covariate, and in the other model, this covariate is discretised at