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Table 1 Demographic Characteristics of the 2005 Medicare Random 5% Sample and FFS Study Cohort

From: Prevalence of multiple chronic conditions in the United States' Medicare population

Beneficiary Demographics Random 5% Sample1 Study Cohort2
  Number % Number %
All 2,232,528 100.0 1,649,574 100.0
Sex     
Male 985,629 44.1 71,5925 43.4
Female 1,246,899 55.9 933,649 56.6
Race     
White 1,870,224 83.8 1,407,709 85.3
Black 220,950 9.9 158,517 9.6
Hispanic 53,325 2.4 32,945 2.0
Asian 37,313 1.7 21,632 1.3
Native American 9,209 0.4 7,083 0.4
Other/Unknown 41,507 1.9 21,688 1.3
Age 3     
<65 349,167 15.6 254,457 15.4
65-74 936,988 42.0 641,699 38.9
75-84 670,917 30.1 531,282 32.2
85+ 275,456 12.3 222,136 13.5
  1. 1Includes random 5% sample of Medicare beneficiaries who were eligible for or enrolled in Medicare on or after January 1, 2005.
  2. 2Includes beneficiaries with at least 11 months of Part A and B coverage and no more than one month of managed care coverage.
  3. 3Age is calculated based on the age of the beneficiary as of December 31, 2005. If the beneficiary expired, the age is calculated based on age at the time of death.