tion-number">1</span> Efficiency augmentation</a></li>
<li><a href="#propensity-score-utilities"><span class="toc-section-number">2</span> Propensity score utilities</a></li>
<li><a href="#augmentation-utilities"><span class="toc-section-number">3</span> Augmentation utilities</a></li>
<li><a href="#comparing-performance-with-augmentation"><span class="toc-section-number">4</span> Comparing performance with
augmentation</a></li>
</ul>
</div>

<div id="efficiency-augmentation" class="section level1" number="