ohdsi.github.io/FeatureExtraction/" class="external-link">https://ohdsi.github.io/FeatureExtraction/</a>. PDF versions of the vignettes and package manual are here:</p>
<ul>
<li>Vignette: <a href="https://raw.githubusercontent.com/OHDSI/FeatureExtraction/main/inst/doc/UsingFeatureExtraction.pdf" class="external-link">Using FeatureExtraction</a>
</li>
<li>Vignette: <a href="https://raw.githubusercontent.com/OHDSI/FeatureExtraction/main/inst/doc/CreatingCovariatesUsingCohortAttributes.pdf" class="external-lin