Table 2.

Characteristics of the Study Population at Baseline

CharacteristicsPatients with CRC (%)
Stage 0–1(n = 8865)Stage 2–3(n = 13,296)
Age (years)
    65–6921.419.0
    70–7429.028.2
    75–7927.126.6
    80–8922.526.2
Sex
    Female53.956.6
Race/ethnicity
    White86.687.2
    African American6.36.1
    Hispanic1.01.1
    Asian3.53.3
    Other2.62.3
NCI comorbidity index score
    <0.076.879.0
    0.0–0.513.212.0
    0.5–1.06.25.8
    >1.03.83.1
Reason for Medicare eligibility
    Renal disease/disability5.95.3
    Age ≥65 years94.194.7
Median household income in residence ZIP code*
    ≤$30,0008.28.6
    $30,001–$45,00038.439.0
    >$45,00053.452.4
  • * Median household income in residence ZIP code statistics have missing values: stage 0–1, 210; stage 2–3, 301.

  • NCI, National Cancer Institute; CRC, colorectal cancer.