{"kind":"assistant","text":"sm.OLS(p_vreg_bnw, add_constant([covered, post, did])).fit(cov_type='cluster', groups=county_id) (CR1 errors with statsmodels' default G/(G-1)\u00b7(N-1)/(N-K) correction)","tool_calls":[{"args":{"cluster":"county_id","controls":["covered","post"],"dataset":"ref_panel","x":["did"],"y":"p_vreg_bnw"},"id":"script_1","name":"infer__ols"}]}