an></span></em>, <em class="sig-param"><span class="n"><span class="pre">tev</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0.1</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#qtl_power.rare_variants.RareVariantBurdenPower.ncp_burden_test_model1" title="Link to this definition"></a></dt>
<dd><p>Approximation of the non-centrality parameter under model S1 from Derkach et al.</p>
<p>The key assumption in this case i