X hits on this document

75 views

0 shares

0 downloads

0 comments

30 / 31

suitable control for California among other states (that did not implement comparable policies over the same period). ADH suggest using many potential control groups (38 states or so) to create a single synthetic control group. Two time periods: one before the policy and one after. Let yit be the outcome for unit i in time t, with i 1 the treated unit. Suppose there are J possible controls, and index these as 2, . . . , J 1. Let xi be observed covariates for unit i that are not (or would not be) affected by the policy; xi may contain period t 2 covariates provided they are not affected by the policy. Generally, we can estimate the effect of the policy as

30

Document info
Document views75
Page views75
Page last viewedSat Dec 03 18:23:02 UTC 2016
Pages31
Paragraphs261
Words3934

Comments