Epidemiologic observations on Parkinson's disease

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Abstract
We determined age-specific and age-adjusted incidence rates and mortality rates of idiopathic Parkinson9s disease (PD) in a cohort of men followed for 29 years. Since enrollment in 1965, the Honolulu Heart Study has followed 8,006 American men of Japanese or Okinawan ancestry. Rescreening of the entire cohort, completed in 1994, included attempts to detect all prevalent and incident cases of PD, parkinsonism, and related conditions. PD incidence rates and age-incidence patterns were similar to rates previously published for Caucasian men in Europe and the United States, and were higher than incidence rates published for Asian men living in Asian nations. Prevalence patterns appeared to correspond more closely to patterns observed in developed nations than in Asian nations. PD was associated with markedly increased mortality that appeared to result from effects of both absolute age and disease duration. There was no firm evidence for differences in birth cohort risks of PD. These data may have implications for maturational and environmental theories of PD etiology. NEUROLOGY 1996;46: 1044-1050.

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