code: def test_oddsratio_confint(self):
      lcb1, ucb1 = self.tbl_obj.oddsratio_confint(0.05)
      lcb2, ucb2 = self.oddsratio_confint
      assert_allclose(lcb1, lcb2)
      assert_allclose(ucb1, ucb2)
  
imports: import os
  import warnings
  import numpy
  import statsmodels.stats.contingency_tables
  import pandas
  from numpy.testing import assert_allclose, assert_equal
  import statsmodels.api
label_desc: Use image node_id 6 for calling the Check2x2Mixin obj's underlying member method code with example usage: obj.test_oddsratio_confint() without return types