{"kind":"assistant","text":"2SLS by matrices: X = [1, D, controls], Z = [1, treat, controls]","tool_calls":[{"args":{"dataset":"ref_iv","endog":["pt_id_with_lean"],"exog":["pre_lean_dem","age","age2","regyear","regyearmissing","twonames","combined_female","voted2006","voted2004","voted2002","voted2000","voted1998","voted1996","interest","pre_aligned_vh","pre_direct_unemp","pre_direct_econ","pre_direct_bushap","pre_direct_congapp"],"instruments":["treat"],"se":"HC1","y":"pt_voteevalalignindex"},"id":"script_1","name":"infer__iv_2sls"}]}