Response to letter to the Editor.

We agree with Dr. Meyer (1) that socioeconomic disparities are far from being solved and, in fact, US disparities have increased in the past decade. Most studies on socioeconomic status attempt to disentangle specific factors mediating the inequities linked with poor health outcomes. Because of complex interactions between individual factors, we proposed a socioeconomic adversity index (SAI) combining such factors in the US(2). This article is protected by copyright. All rights reserved.