The Maine Medicaid Study also found that patients diagnosed with SMI not only experienced higher rates of specific illnesses, but also experienced higher rates of combined (multiple) and serious diseases.

This slide compares the 2004 prevalence of medical conditions among the Seriously Mentally Ill (SMI with and without substance abuse) vs. non-SMI [Medicaid recipients without mental health conditions or substance abuse]:

       SMI   non-SMI
   1 plus conditions   69%     51%
   2 plus conditions   46%     27%
   3 or more conditions   28%     15%

[Source of data: Freeman, E. and Yoe, J.T., as referenced above.]

Key Point:      
Among recipients of Medicaid, SMI is associated with higher rates of physical (somatic) medical disease.