def escore(self):
        """(property) Returns the E-score associated with the result."""
        hg_pval_thresh = self.escore_pval_thresh or self.pval
        escore_tol = self.escore_tol or mhg_cython.get_default_tol()
        es = mhg_cython.get_xlmhg_escore(
            self.indices, self.N, self.K, self.X, self.L,
            hg_pval_thresh, escore_tol)
        return es