Table 1. Characteristics of the Study Sample*
CharacteristicsTotal NPercent
Total sample975100.0
    50–64 years62764.3
    ≥65 years34835.7
Marital status
    Not married36437.3
Education level
    Less than college58660.1
    College degree or graduate school38939.9
Smoking status
    Current smoker10911.9
Family history of colorectal cancer
    Positive family history868.8
    Negative family history88991.2
    Other or none889.0
  • * We recruited 1437 patients; however, patients who were missing data for any one of these characteristics or who reported a history of colorectal cancer or colorectal problems were removed from the analysis, resulting in a working sample size of 975.