Zimmer, Zachary S., and James S. House. 2003. "Education, Income, and Functional Limitation Transitions Among American Adults: Contrasting Onset and Progression." International Journal of Epidemiology, 32(6): 1089-1097.
Background: Although a robust association between socioeconomic status and health has been shown in past research, the processes that explain the connection are not well understood. This paper seeks to advance such understanding in two ways, first by attending to the distinction between onset of a functional health problem and its progression, and second by addressing whether and how education and income relate differently to the onset versus progression of functional health problems.