account
for regularization bias via cross-fitting (<a href="https://arxiv.org/abs/1608.00060" class="uri">https://arxiv.org/abs/1608.00060</a>); the
<code>create.propensity.function()</code> offers a cross-fitting
approach for high-dimensional propensity score estimation. A basic usage
of this function with cross-fitting (with 4 folds; normally we would set
this larger, but have reduced it to make computation time shorter) is as
follows:</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode r"><code c