Table 3: Factors associated with CRC Screening among medicare beneficiaries in 2005.

CharacteristicsAdjusted OR 
(95% CI)

Obesity status
 Nonobese1.00 (reference)
 Obesec1.25 (1.12–1.39)a
Gender
 Male1.00 (reference)
 Female1.24 (1.15–1.34)b
Age
 75+1.00 (reference)
 65–740.94 (0.86–1.03)
 Under 650.54 (0.47–0.62)b
Race/ethnicity
 Non-Hispanic white1.00 (reference)
 Non-Hispanic black0.97 (0.83–1.14)
 Hispanic0.97 (0.80–1.17)
 Other0.74 (0.62–0.88)a
Education
 College degree or higher1.00 (reference)
 Some college0.89 (0.75–1.07)
 High school/vocational grad0.67 (0.58–0.78)b
 No high school diploma0.52 (0.44–0.61)
Marital status
 Divorced1.00 (reference)
 Married0.90 (0.74–1.09)
 Widowed0.76 (0.65–0.90)a
 Never married0.55 (0.45–0.69)b
 Other0.16 (0.04–0.64)a
Supplemental insurance
 Private1.00 (reference)
 Medicaid0.53 (0.45–0.61)a
 Medicaid + private0.69 (0.50–0.95)a
 None0.79 (0.71–0.88)a
Income
 Less than $25 K1.00 (reference)
 $25 K to $50 K1.22 (1.09–1.36)a
 Greater than $50 K1.31 (1.05–1.62)a
Usual source of care
 No1.00 (reference)
 Yes5.64 (4.69–6.80)b
History of any type of cancer
 No1.00 (reference)
 Yes1.19 (1.08–1.32)a
History of any type of cancer screening
 No1.00 (reference)
 Yes2.29 (2.11–2.48)b

Significance level .
bSignificance level .
cThe category includes both obese and morbidly obese beneficiaries.