Table 1.

Characteristics of the Study Population: MCBS 2000–2005

Survey Yeara
Characteristics2000 (n=8,330)2003 (n=7,889)2005 (n=7,614)PValue
FOBT = home fecal occult blood test; MCBS = Medicare Current Beneficiary Survey.
a The weighted population estimates for those included in the analyses were for year 2000, N = 22,329,320; year 2003, N = 22,601,377; year 2005, N = 22,548,092. Column percents may not sum to 100% because of rounding error.
b Colorectal cancer testing categories are mutually exclusive.
Age groups, %
    65–69 y33.535.035.5.01
    70–74 y36.535.134.4.01
    75–80 y30.130.030.1>.99
Race-ethnicity, %
Sex, women, %55.854.954.8.17
Marital status, %
    Never married3.
Body mass index, kg/m2, %
Language of interview, English, %96.595.995.9.18
Less than high school, %30.127.424.5<.01
Annual household income <$25,000, %57.752.148.9<.01
Residing in a metropolitan area, %76.376.876.4.90
Medicare insurance type, %
    Medicare part B only9.312.412.3<.01
    Medicare with supplemental insurance81.176.276.4<.01
Usual place of medical care and physician, %
    Primary care78.182.482.0<.01
    Non–primary care14.712.012.5.01
    No usual place of care7.
    Delayed medical care due to cost7.
    History of non–skin cancer except CRC15.115.815.8.22
    General health fair-to-poor21.721.519.9.04
Colorectal cancer testing, %b
    Endoscopy >5 y previously8.08.89.0<.01
    FOBT within 2 y14.911.710.4.04
    Recent endoscopy37.844.548.9<.01