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Submitted by GG on

Great list - knew many of these posts but not others, great to have them all together in one place. Now David, a follow-up request. I knew your small N larg T paper and its ANCOVA recommendation, but I hadn't seen the posts by Lin on regression adjustment:
http://blogs.worldbank.org/impactevaluations/regression-adjustment-in-randomized-experiments-is-the-cure-really-worse-than-the-disease
A linear combination of both would be great, since "your" ANCOVA is a regrssion adjustment on a special case, averaged pre-treatment outcomes, and those may vary substantially with the outcomes and the treatment effects...
Thanks!