CBO Projections of Coverage under the ACA

We all know that the CBO has been under assault over the recent scoring of the AHCA (14 million reduction in coverage by 2018, 26 million by 2026; relatively unchanged by recent amendments), with allegations that their previous projections have been “wrong”. I document in this post that CBO macro projections have been comparable to Blue Chip averages, in terms of accuracy (mean bias, RMSE’s). In terms of the issue at hand, here is a graph depicting various vintages of CBO projections of reduction in uninsured.

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