sing values in the <code>toyData</code> dataset:</p>
<pre class="r"><code>check(toyData, checks = setChecks(all = &quot;identifyMissing&quot;))</code></pre>
<pre><code>## $pill
## $pill$identifyMissing
## No problems found.
## 
## $events
## $events$identifyMissing
## The following suspected missing value codes enter as regular values: 999, NaN.
## 
## $region
## $region$identifyMissing
## The following suspected missing value codes enter as regular values:  , ..
## 
## $change
## $change$identifyMissing
##