This study concludes that, from 1996 to 2004, persons with disabilities had significantly higher total health expenditures, out-of-pocket spending, and ratios of out-of-pocket spending to family income than their those without disabilities. 

Mitra, S., Findley, P.A., Sambamoorthi, U. (2009). Health care expenditures of living with a disability: total expenditures, out-of-pocket expenses, and burden, 1996 to 2004. Archives of Physical Medicine and Rehabilitation, 90(9): 1532-40. DOI: 10.1016/j.apmr.2009.02.020. http://ideas.repec.org/p/frd/wpaper/dp2008-18.html

Authors: Sophie Mitra, Patricia A. Findley, Usha Sambamoorthi