I wrote recently about the need to take into account patient characteristics when using patient outcomes to compare the quality of care provided by different physicians. That is a well-accepted principle, and the need for so-called “risk-adjustment” applies not only to evaluating physicians, but also to evaluating hospitals and larger care delivery systems. There has been a smoldering controversy, however, about which patient characteristics to consider and, in particular, the implications of including socioeconomic factors in such comparisons. This controversy played out again in a recent issue of the Annals of Internal Medicine.
Here is the core of the issue.