{"kind":"assistant","text":"smf.ols('prop_attn ~ post*ever_treated + sustain + pct_rev_change').fit(cov_type='cluster', groups=companyid) (CR1 errors with statsmodels' default G/(G-1)\u00b7(N-1)/(N-K) correction)","tool_calls":[{"args":{"cluster":"companyid","controls":["post","ever_treated","sustain","pct_rev_change"],"dataset":"ref_panel","x":["post_ever"],"y":"prop_attn"},"id":"script_1","name":"infer__ols"}]}