code: def initialize(cls, tables, use_arr=False):
      tables1 = tables if not use_arr else np.dstack(tables)
      cls.rslt = ctab.StratifiedTable(tables1)
      cls.rslt_0 = ctab.StratifiedTable(tables, shift_zeros=True)
      tables_pandas = [pd.DataFrame(x) for x in tables]
      cls.rslt_pandas = ctab.StratifiedTable(tables_pandas)
  
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 1 for calling the CheckStratifiedMixin obj's underlying member method code with example usage: obj.initialize(cls, tables, use_arr) without return types