In addition, the YPLL and the mean age at time of death for public mental health clients with major mental illness (MMI) diagnoses — schizophrenia, major depressive disorders, bipolar disorders, delusional and psychotic disorders, and attention deficit/hyperactivity disorders — are compared with clients with non-MMI diagnoses using data submitted by six states. MMI diagnoses in this study include Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) diagnosis codes 295 through 298 and 314 (19). The operational definition of MMI was developed and used during the previously mentioned Sixteen-State Study on Mental Health Performance Measures (9). Likewise, in this study, MMI is operationally defined using the listed diagnoses. Clients with the listed DSM-IV diagnoses are clients with MMI, and clients without these specific diagnoses but who have other DSM-IV diagnoses are considered clients with other non-MMI diagnoses.
