Table 1.

Characteristics of Medicare enrollees included in validation study, 2002

Included in study
Not included in study
nPercentagenPercentage
All study participants561100375100
Age50-645910.55013.3
65-7435162.722660.3
75-8015026.89926.4
Race*African American13223.513636.3
White42976.523963.7
SexFemale34261.023562.7
Male21939.014037.3
Education*Less than high school9416.811030.0
High school19634.913135.7
Post–high school26447.112634.3
Marital statusMarried35863.821457.1
Divorced/separated/single559.8349.1
Widowed14425.712032.0
Low incomeNo state “buy in”52593.634491.7
State “buy in”366.4318.3
Enrollee region of residenceEastern North Carolina8314.84712.5
Central North Carolina32858.523662.9
Western North Carolina15026.79224.6
  • NOTE: Percentages may not add to 100% due to missing data.

  • * χ2 test significant at P < 0.05 for difference between those included and not included in study.