Letters Section Editor: Robert M. Golub, MD, Senior Editor.
To the Editor: In their Special Communication on socioeconomic status (SES) in health research, Dr Braveman and colleagues1 concluded that the correlation between achieved education and income is moderately strong (Spearman correlation coefficient 0.41 to 0.67) and that these indices of socioeconomic class are related but not interchangeable. This was based on data from 5 surveys conducted in the United States. While race was examined as an important moderating factor, the authors did not consider that the relationship between education and income may vary across countries depending on political situation and recent history.
Uher R, Dragomirecka E, Papezova H, Pavlova B. Use of Socioeconomic Status in Health Research. JAMA. 2006;295(15):1770. doi:10.1001/jama.295.15.1770-a