k">Creating covariates using cohort attributes</a>
</li>
<li>Vignette: <a href="https://raw.githubusercontent.com/OHDSI/FeatureExtraction/main/inst/doc/CreatingCustomCovariateBuilders.pdf" class="external-link">Creating custom covariate builders</a>
</li>
<li>Vignette: <a href="https://raw.githubusercontent.com/OHDSI/FeatureExtraction/main/inst/doc/CreatingCovariatesBasedOnOtherCohorts.pdf" class="external-link">Creating covariates based on other cohorts</a>
</li>
<li>Package manual: <a href="https://raw.gi