is functions through the <code>vartype</code> and
<code>jointprob</code> arguments.</p>
</div>
<div class="section level2">
<h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a>
</h2>
<p>Sickle, J. V., &amp; Paulsen, S. G. (2008). Assessing the
attributable risks, relative risks, and regional extents of aquatic
stressors. <em>Journal of the North American Benthological Society</em>,
27(4), 920-931.</p>
<p>Stevens Jr, D. L., &amp; Olsen, A. R. (2003). Variance estimation