class="sd">&quot;&quot;&quot;</span>
<span class="sd">    This class implements the Caliper Matching method for causal inference.</span>

<span class="sd">    Parameters</span>
<span class="sd">    ----------</span>
<span class="sd">    caliper : float, default=0.2</span>
<span class="sd">        The caliper width for matching. Units are in terms of the standard deviation of the logit of the propensity score.</span>

<span class="sd">    Methods</span>
<span class="sd">    -------</span>
<span class="sd">  