, NA is handled as a regular factor level rather than missing. NA is shown as the last factor level in the table. Only effective for categorical variables.</p></dd>
<dt>test</dt>
<dd><p>If TRUE, as in the default and there are more than two groups, groupwise comparisons are performed.</p></dd>
<dt>testApprox</dt>
<dd><p>A function used to perform the large sample approximation based tests. The default is <code>chisq.test</code>. This is not recommended when some of the cell have small counts like fewer than