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  • Title: Comparative mortality in mentally retarded patients in California, with and without Down's syndrome, 1986-1991.
    Author: Singer RB, Strauss D.
    Journal: J Insur Med; 1997; 29(3):172-84. PubMed ID: 10176367.
    Abstract:
    BACKGROUND: The large database of the California Department of Developmental Services provides a data source for mortality rates in persons with mental retardation by age, sex, severity, cause and associated conditions. RESULTS: Data for 1986-1991 were used to determine age-related mortality rates in cases with and without Down's Syndrome, in three severity levels of mental retardation. Distribution data for the data-base population are also given. CONCLUSION: In both Down's and non-Down's patient groups excess mortality increased with severity of mental retardation at all ages. In both groups excess mortality tended to decrease with advancing age to age 35-39 years, and to increase at the older ages. The age increase in excess death rate at age 40 years and up was steeper in the patients with Down's Syndrome.
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