Table 3.

Adjusted Associations of Access to Health Care With Patterns of Colorectal Cancer Testing Among Medicare Enrollees: MCBS 2000 and 2005

	Adjusted Odds Ratio (95% CI)^aStudy Year
	2000			2005
Study Parameters	Endoscopy >5 y	FOBT	Recent Endoscopy	Endoscopy >5 y	FOBT	Recent Endoscopy
CI=confidence interval; FOBT = home fecal occult blood test; MCBS = Medicare Current Beneficiary Survey; ref = reference.
^a Estimates derived from multinomial logistic regression models, which were simultaneously adjusted for each variable shown and demographic, geographic and socioeconomic factors, and health status.
^b These estimates were significantly different from each other based on the Wald test with the Bonferonni correction.
Usual place of health care
Primary care	Ref	Ref	Ref	Ref	Ref	Ref
Non–primary care	1.23 (0.92–1.65)	0.99 (0.80–1.22)	0.92 (0.79–1.08)	0.96 (0.74–1.23)	1.21 (0.92–1.60)	0.94 (0.76–1.16)
No usual source of care	1.05 (0.76–1.45)	0.27 (0.19–0.39)	0.35 (0.27–0.46)	0.39 (0.26–0.59)	0.18 (0.11–0.30)	0.22 (0.17–0.30)
Insurance stratified by education
Less than high school
Medicare Part B only	0.39 (0.25–0.62)	0.60 (0.36–0.98)	0.52 (0.39–0.70)	1.00 (0.63–1.59)	0.84 (0.49–1.43)	0.70 (0.48–1.01)
Medicare-Medicaid	0.37 (0.21–0.64)	0.43 (0.29–0.64)	0.80 (0.63–1.02)^b	0.72 (0.50–1.05)	0.91 (0.61–1.35)	0.81 (0.60–1.09)
Supplemental insurance	Ref	Ref	Ref	Ref	Ref	Ref
High school diploma or higher
Medicare Part B only	0.84 (0.48–1.46)	0.62 (0.44–0.89)	0.61 (0.46–0.80)	0.80 (0.56–1.16)	1.05 (0.78–1.41)	0.57 (0.44–0.73)
Medicare-Medicaid	0.65 (0.38–1.11)	0.55 (0.38–0.81)	0.41 (0.29–0.58)^b	0.70 (0.46–1.08)	0.86 (0.52–1.44)	0.53 (0.39–0.71)
Supplemental insurance	Ref	Ref	Ref	Ref	Ref	Ref
Delayed medical care due to cost	1.14 (0.78–1.67)	1.10 (0.81–1.49)	1.00 (0.79–1.27)	1.35 (0.95–1.92)	1.04 (0.71–1.52)	1.06 (0.85–1.33)