{"kind":"assistant","text":"The Effect, Table 18.2: two-way fixed effects regression of the donor registration rate on Treated with state and quarter fixed effects, errors clustered by state (feols(Rate ~ Treated | State + Quarter, vcov = ~State)).","tool_calls":[{"args":{"dataset":"organ_donations","time":"Quarter_Num","treat":"Treated","unit":"State","y":"Rate"},"id":"script_1","name":"infer__twfe"}]}