e doing any further processing. By using <code>na.action="na.omit"</code> for example, only rows with complete data are kept for the analysis.</p>
<p>Alternatively, this function also supports the use of multiple imputation via the <span class="pkg">mice</span> package. Instead of supplying a single data.frame, the user should create a <code>mids</code> object using the <code>mice</code> function and directly pass this to the <code>data</code> argument. When methods are used which rely on previously estimat