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  • Title: Predictors of colorectal cancer screening participation in the United States.
    Author: Ioannou GN, Chapko MK, Dominitz JA.
    Journal: Am J Gastroenterol; 2003 Sep; 98(9):2082-91. PubMed ID: 14499792.
    Abstract:
    OBJECTIVE: Our aim was to identify predictors of colorectal cancer screening in the United States and subgroups with particularly low rates of screening. METHODS: The responses to a telephone-administered questionnaire of a nationally representative sample of 61,068 persons aged >/=50 yr were analyzed. Current screening was defined as either sigmoidoscopy/colonoscopy in the preceding 5 years or fecal occult blood testing (FOBT) in the preceding year, or both. RESULTS: Overall, current colorectal cancer screening was reported by 43.4% (sigmoidoscopy/colonoscopy by 22.8%, FOBT by 9.9%, and both by 10.7%). The lowest rates of screening were reported by the following subgroups: those aged 50-54 yr (31.2%), Hispanics (31.2%), Asian/Pacific Islanders (34.8%), those with education less than the ninth grade (34.4%), no health care coverage (20.4%), or coverage by Medicaid (29.2%), those who had no routine doctor's visit in the last year (20.3%), and every-day smokers (32.1%). The most important modifiable predictors of current colorectal cancer screening were health care coverage (OR = 1.7, 95% CI = 1.5-1.9) and a routine doctor's visit in the last year (OR = 3.5, 95% CI = 3.2-3.8). FOBT was more common in women than in men (OR = 1.8, 95% CI = 1.6-2.0); sigmoidoscopy/colonoscopy was more common in Hispanics (OR = 1.4, 95% CI = 1.1-1.7) and Asian/Pacific Islanders (OR = 2.4, 95% = CI 1.5-3.9) relative to whites, in persons without routine doctor's visits in the preceding year (OR = 3.3, 95% CI = 2.8-4), and in persons with poor self-reported health (OR = 1.3, 95% CI = 1.2-1.5). CONCLUSIONS: Interventions should be developed to improve screening for the subgroups who reported the lowest screening rates. Such interventions may incorporate individual screening strategy preferences.
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