<dd><p>The squared Pearson correlation.</p></dd>

<dt><code>"z"</code></dt>
<dd><p>The Fisher-z transformed Pearson correlation.</p></dd>

<dt><code>"D"</code></dt>
<dd><p>The LD coefficient.</p></dd>

<dt><code>"Dprime"</code></dt>
<dd><p>The standardized LD coefficient.</p></dd>


</dl><p>Note that these are all <em>composite</em> measures of LD (see
the description in <code><a href="ldest.html">ldest</a>()</code>).</p></dd>
<dt>shrinkrr</dt>
<dd><p>A logical. Should we use adaptive shrinkage
(Stephens, 2