Jason Kerwin (not verified)

April 19, 2022

Fantastic post, this is very helpful. I wasn’t totally clear on what the endogenous attrition problem could be if we drop entire strata in response to units attritting. Shouldn’t we still have a valid experiment within the remaining strata? An obvious issue is that treatment effects may vary so the TOT estimate may not match the population ATE, but that doesn’t seem to be what you’re saying.