   <h2 id="instrumental-variables-regression">Instrumental Variables Regression <a href="#instrumental-variables-regression" class="anchor" aria-hidden="true"></a></h2>
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          <p><code><a href="ivreg.html">ivreg()</a></code> </p>
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        <td><p>Instrumental-Variable Regression by 2SLS, 2SM, or 2SMM Estimation</p></td>
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          <p><code><a href="ivreg.fit.html">ivreg.fit()</a></code> 