Table 1.

Unadjusted associations of socioeconomic indicators with patterns of colorectal cancer screening among Medicare enrollees: MCBS 2000 to 2005

CharacteristicsStudy year: odds ratios (95% confidence interval)*
2000 (n = 8,344)2005 (n = 7,644)
nEndoscopy >5 yFOBTRecent endoscopynEndoscopy >5 yFOBTRecent endoscopy
Race-ethnicity
    Whites6,7051.00 (reference)1.00 (reference)1.00 (reference)6,0231.00 (reference)1.00 (reference)1.00 (reference)
    Blacks7610.58 (0.41-0.82)0.56 (0.42-0.74)0.70 (0.57-0.86)6360.58 (0.40-0.84)0.67 (0.45-1.01)0.74 (0.57-0.96)
    Hispanics5830.52 (0.33-0.82)0.71 (0.46-1.10)0.50 (0.36-0.69)6170.48 (0.35-0.65)0.56 (0.41-0.76)0.54 (0.44-0.67)
    Others3010.47 (0.26-0.86)0.70 (0.49-1.01)0.46 (0.33-0.63)3580.67 (0.43-1.02)0.59 (0.38-0.93)0.58 (0.44-0.76)
Highest educational achievement
    More than high school2,6941.00 (reference)1.00 (reference)1.00 (reference)2,8011.00 (reference)1.00 (reference)1.00 (reference)
    High school graduate2,9960.68 (0.55-0.85)0.65 (0.55-0.76)0.58 (0.50-0.67)2,8370.70 (0.57-0.86)0.66 (0.54-0.80)0.56 (0.49-0.65)
    Less than high school2,6390.45 (0.35-0.58)0.35 (0.29-0.42)0.37 (0.33-0.43)1,9870.48 (0.37-0.62)0.46 (0.36-0.59)0.34 (0.29-0.40)
Annual household income, ×$1,000
    >401,4631.00 (reference)1.00 (reference)1.00 (reference)1,7421.00 (reference)1.00 (reference)1.00 (reference)
    20-402,6230.61 (0.47-0.79)0.66 (0.53-0.82)0.56 (0.48-0.66)2,5790.88 (0.71-1.10)0.82 (0.63-1.05)0.68 (0.58-0.80)
    10-202,2280.48 (0.36-0.65)0.46 (0.36-0.58)0.34 (0.29-0.40)1,7530.58 (0.45-0.75)0.60 (0.45-0.80)0.38 (0.31-0.47)
    <101,4950.28 (0.20-0.39)0.29 (0.23-0.37)0.24 (0.20-0.29)9970.52 (0.38-0.70)0.43 (0.31-0.58)0.30 (0.24-0.36)

Abbreviations: FOBT, home FOBT alone within 2 y; Endoscopy, sigmoidoscopy or colonoscopy; recent endoscopy, lower gastrointestinal endoscopy within 5y with or without FOBT.

  • *Estimates derived from single predictor multinomial logistic regression models analyses with those who had only FOBT >2 y previously or have never previously been screened as the reference group.

  • n = sample sizes within each category of study population by survey year.