Table 2 Prevalence of PD in Copiah County, Mississippi in 1978 standardized to US population 2010a

From: Prevalence of Parkinson’s disease across North America

Sex Age, years Denominator Cases US population 2010 Expected cases Age-standardized prevalence/100,000
Male 40–64 2473 4 50,137,484 81,096  
  65–74 948 4 10,096,519 42,601  
  75+ 472 5 7,266,441 76,975  
Female 40–64 3016 3 52,242,925 51,966  
  65–74 1235 8 11,616,910 75,251  
  75+ 781 7 11,288,114 101,174  
Total    31 142,648,393 429,063 301
  1. aBased on previously published work by others.7 Includes possible and definite cases with 5 of the 31 cases designated as post-encephalitic parkinsonism. These were not removed because age-specific numbers were not available by diagnosis