label="anchor" href="#details"></a></h2>
    <p>The two-step method first estimates a Probit model for the selection equation,
then fits an outcome equation that includes the Inverse Mills Ratio (IMR)
as an additional regressor to correct for sample selection bias.</p>
    </div>
    <div class="section level2">
    <h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
    <p>There are no references for Rd macro <code>\insertAllCites</code> on this help page.

For 